Climate and average weather in Tianjin
In Tianjin, the summers are muggy, hot, showery, and partly cloudy and the winters are cold, snowy, and mostly clear.
Over the course of the year, the temperature in Tianjin typically varies from -7°C to 32°C, and is rarely below -12°C or above 36°C. July is the hottest month of the year, while January is the coldest.
Based on the travel score, the best times of year to visit Tianjin for warm-weather activities are from late March to late May and early September to late October.
- Hottest
- Jul
- 32°
- Coldest
- Jan
- -7°
- Wettest
- Jul
- 175 mm
- Driest
- Jan
- 3 mm
- Rain / yr
- 592 mm
- 63 wet days
- Daylight
- 9.2–14.8 h
- shortest–longest
- Elevation
- 11 m
- 39.1°N
- Clearest
- Dec
- 28% cloud
- Air quality
- Severe
- PM2.5 60.2 µg/m³ · 2018
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Tianjin weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late March to late May.
Temperature through the year
Daily average highs and lows in Tianjin, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 5.0 months, from April 30 to September 29, with daily high temperatures above 24°C. The hottest month of the year in Tianjin is July, with an average high of 32°C and low of 23°C.
The cool season lasts 3.0 months, from November 25 to February 22, with daily high temperatures below 8°C. The coldest month of the year in Tianjin is January, with an average low of -7°C and high of 2°C.
Days typically run about 10°C warmer than nights, with the widest day–night swing (around 11°C) in April.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 2 | 6 | 13 | 21 | 27 | 31 | 32 | 30 | 27 | 20 | 11 | 4 |
| Avg low (°C) | -7 | -4 | 2 | 10 | 16 | 21 | 23 | 22 | 17 | 10 | 2 | -5 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 2 | -7 |
| Feb | 6 | -4 |
| Mar | 13 | 2 |
| Apr | 21 | 10 |
| May | 27 | 16 |
| Jun | 31 | 21 |
| Jul | 32 | 23 |
| Aug | 30 | 22 |
| Sep | 27 | 17 |
| Oct | 20 | 10 |
| Nov | 11 | 2 |
| Dec | 4 | -5 |
How hot and cold Tianjin really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, Tianjin feels like about 36°C (around July 30). About 61 days a year carry some heat stress, peaking in July.
On the coldest nights, wind chill pulls the feels-like down to about -12°C (around January 14), with roughly 130 freezing days a year (feels-like at or below 0°C) — 45 of them bitterly cold — worst in January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 2 | 6 | 13 | 21 | 27 | 31 | 35 | 33 | 27 | 20 | 11 | 4 |
| Air high (°C) | 2 | 6 | 13 | 21 | 27 | 31 | 32 | 30 | 27 | 20 | 11 | 4 |
| Feels-like low (°C) | -12 | -8 | -1 | 9 | 16 | 21 | 23 | 22 | 17 | 9 | -2 | -9 |
| Air low (°C) | -7 | -4 | 2 | 10 | 16 | 21 | 23 | 22 | 17 | 10 | 2 | -5 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 2 | 2 | -12 | -7 |
| Feb | 6 | 6 | -8 | -4 |
| Mar | 13 | 13 | -1 | 2 |
| Apr | 21 | 21 | 9 | 10 |
| May | 27 | 27 | 16 | 16 |
| Jun | 31 | 31 | 21 | 21 |
| Jul | 35 | 32 | 23 | 23 |
| Aug | 33 | 30 | 22 | 22 |
| Sep | 27 | 27 | 17 | 17 |
| Oct | 20 | 20 | 9 | 10 |
| Nov | 11 | 11 | -2 | 2 |
| Dec | 4 | 4 | -9 | -5 |
Average hourly temperature in Tianjin
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on July afternoons, near 32°C, and coldest before dawn in January, near -7°C.
Tianjin weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 2° / -7° | 3 | 0.9 | 1 | 9.6 | 0.0 |
| Feb | 6° / -4° | 6 | 1.4 | 1 | 10.5 | 0.7 |
| Mar | 13° / 2° | 10 | 2.4 | 0.5 | 11.7 | 4.5 |
| Apr | 21° / 10° | 29 | 4.5 | 0.1 | 13 | 7.5 |
| May | 27° / 16° | 39 | 5.6 | 0 | 14.1 | 7.0 |
| Jun | 31° / 21° | 86 | 8.3 | 0 | 14.7 | 4.8 |
| Jul | 32° / 23° | 175 | 13.3 | 0 | 14.5 | 3.9 |
| Aug | 30° / 22° | 135 | 11.9 | 0 | 13.5 | 4.6 |
| Sep | 27° / 17° | 55 | 6.4 | 0 | 12.3 | 7.1 |
| Oct | 20° / 10° | 38 | 4.9 | 0 | 11 | 7.3 |
| Nov | 11° / 2° | 14 | 2.6 | 0.8 | 9.9 | 3.2 |
| Dec | 4° / -5° | 4 | 1.1 | 0.9 | 9.3 | 0.0 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Tianjin gets about 592 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.
The wetter season lasts 5.5 months, from around Apr 23 to Oct 6, peaking in July at about 48% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jan 14.
July is the wettest month by volume, with 175 mm over about 13 wet days; January is the driest, with 3 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 3 | 5 | 8 | 15 | 18 | 27 | 43 | 38 | 22 | 15 | 9 | 4 |
| Rain days | 1 | 1 | 2 | 5 | 6 | 8 | 13 | 12 | 6 | 5 | 3 | 1 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 3 | 1 |
| Feb | 5 | 1 |
| Mar | 8 | 2 |
| Apr | 15 | 5 |
| May | 18 | 6 |
| Jun | 27 | 8 |
| Jul | 43 | 13 |
| Aug | 38 | 12 |
| Sep | 22 | 6 |
| Oct | 15 | 5 |
| Nov | 9 | 3 |
| Dec | 4 | 1 |
Monthly rainfall
Over a full year, Tianjin collects about 592 mm of rain across 63 wet days — roughly 49 mm in an average month.
It doesn’t fall evenly. July is the wettest month with 175 mm, while January is the driest at just 3 mm. The three wettest months alone bring about 67% of the year’s total, and some of the cold-season precipitation falls as snow.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 3 | 6 | 10 | 29 | 39 | 86 | 175 | 135 | 55 | 38 | 14 | 4 |
| Rain days | 1 | 1 | 2 | 5 | 6 | 8 | 13 | 12 | 6 | 5 | 3 | 1 |
| Snow days | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| Rainfall (mm) | Rain days | Snow days | |
|---|---|---|---|
| Jan | 3 | 1 | 1 |
| Feb | 6 | 1 | 1 |
| Mar | 10 | 2 | 1 |
| Apr | 29 | 5 | 0 |
| May | 39 | 6 | 0 |
| Jun | 86 | 8 | 0 |
| Jul | 175 | 13 | 0 |
| Aug | 135 | 12 | 0 |
| Sep | 55 | 6 | 0 |
| Oct | 38 | 5 | 0 |
| Nov | 14 | 3 | 1 |
| Dec | 4 | 1 | 1 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Tianjin, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.
The clearer part of the year begins around September 21 and lasts for 6.8 months, ending around April 16. The clearest month is December, when the sky is clear, mostly clear, or partly cloudy 78% of the time on average.
The cloudier part of the year begins around April 22 and lasts for 5.0 months, ending around September 20. The cloudiest month is July, when it is overcast or mostly cloudy 54% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 76 | 70 | 66 | 64 | 58 | 49 | 46 | 52 | 62 | 68 | 72 | 78 |
| Cloudier (%) | 24 | 30 | 34 | 36 | 42 | 51 | 54 | 48 | 38 | 32 | 28 | 22 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 76 | 24 |
| Feb | 70 | 30 |
| Mar | 66 | 34 |
| Apr | 64 | 36 |
| May | 58 | 42 |
| Jun | 49 | 51 |
| Jul | 46 | 54 |
| Aug | 52 | 48 |
| Sep | 62 | 38 |
| Oct | 68 | 32 |
| Nov | 72 | 28 |
| Dec | 78 | 22 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 20, brings about 14 h 48 min of light; the shortest, around December 19, only 9 h 12 min — a swing of roughly 5 h 36 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.6 | 10.5 | 11.7 | 13.0 | 14.1 | 14.7 | 14.5 | 13.5 | 12.3 | 11.0 | 9.9 | 9.3 |
| Sunrise (AM) | 7:35 | 7:12 | 6:30 | 5:41 | 5:03 | 4:49 | 5:02 | 5:29 | 5:58 | 6:28 | 7:02 | 7:30 |
| Sunset (PM) | 5:07 | 5:40 | 6:11 | 6:42 | 7:12 | 7:34 | 7:32 | 7:02 | 6:13 | 5:25 | 4:51 | 4:45 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 9.6 | 7:35 | 5:07 |
| Feb | 10.5 | 7:12 | 5:40 |
| Mar | 11.7 | 6:30 | 6:11 |
| Apr | 13.0 | 5:41 | 6:42 |
| May | 14.1 | 5:03 | 7:12 |
| Jun | 14.7 | 4:49 | 7:34 |
| Jul | 14.5 | 5:02 | 7:32 |
| Aug | 13.5 | 5:29 | 7:02 |
| Sep | 12.3 | 5:58 | 6:13 |
| Oct | 11.0 | 6:28 | 5:25 |
| Nov | 9.9 | 7:02 | 4:51 |
| Dec | 9.3 | 7:30 | 4:45 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Tianjin averages about 15 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 8 and 22 days.
The sunnier stretch runs 6.5 months, from around Sep 23 to Apr 7. The sunniest month is December, with roughly 21 sunny days (bright).
The greyest month is August, down near 10 sunny days — about 52% fewer than the December peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 21 | 17 | 16 | 15 | 14 | 11 | 9 | 10 | 14 | 18 | 19 | 21 |
| Sky | Bright | Bright | Bright | Bright | Mixed | Mixed | Mixed | Mixed | Mixed | Bright | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 21 | Bright |
| Feb | 17 | Bright |
| Mar | 16 | Bright |
| Apr | 15 | Bright |
| May | 14 | Mixed |
| Jun | 11 | Mixed |
| Jul | 9 | Mixed |
| Aug | 10 | Mixed |
| Sep | 14 | Mixed |
| Oct | 18 | Bright |
| Nov | 19 | Bright |
| Dec | 21 | Bright |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Tianjin, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 3.8 months, from around June 2 to September 25. The muggiest month is July, when the air feels humid, muggy or worse about 98% of the time.
The most comfortable stretch runs from around September 26 to June 1, and April is the most comfortable month — the air is dry or comfortable 100% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 97 | 73 | 18 | 0 | 1 | 32 | 88 | 100 | 100 |
| Comfortable (%) | 0 | 0 | 0 | 3 | 18 | 21 | 2 | 4 | 21 | 8 | 0 | 0 |
| Humid (%) | 0 | 0 | 0 | 0 | 8 | 30 | 10 | 11 | 25 | 4 | 0 | 0 |
| Muggy (%) | 0 | 0 | 0 | 0 | 1 | 23 | 29 | 28 | 16 | 0 | 0 | 0 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 0 | 7 | 41 | 37 | 5 | 0 | 0 | 0 |
| Miserable (%) | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 18 | 1 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| Jan | 100 | 0 | 0 | 0 | 0 | 0 |
| Feb | 100 | 0 | 0 | 0 | 0 | 0 |
| Mar | 100 | 0 | 0 | 0 | 0 | 0 |
| Apr | 97 | 3 | 0 | 0 | 0 | 0 |
| May | 73 | 18 | 8 | 1 | 0 | 0 |
| Jun | 18 | 21 | 30 | 23 | 7 | 0 |
| Jul | 0 | 2 | 10 | 29 | 41 | 18 |
| Aug | 1 | 4 | 11 | 28 | 37 | 18 |
| Sep | 32 | 21 | 25 | 16 | 5 | 1 |
| Oct | 88 | 8 | 4 | 0 | 0 | 0 |
| Nov | 100 | 0 | 0 | 0 | 0 | 0 |
| Dec | 100 | 0 | 0 | 0 | 0 | 0 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in Tianjin is typically calm, near 11 km/h, and varies little with the seasons.
The windier part of the year lasts 4.1 months, from around Feb 16 to Jun 19. The windiest month is April, averaging about 13 km/h (light breeze).
The calmer part of the year runs from around Jun 20 to Feb 15, with August the calmest month at about 9 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 10 | 11 | 12 | 13 | 13 | 11 | 9 | 9 | 9 | 10 | 10 | 10 |
| Feels | calm | calm | calm | light breeze | light breeze | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 10 | calm |
| Feb | 11 | calm |
| Mar | 12 | calm |
| Apr | 13 | light breeze |
| May | 13 | light breeze |
| Jun | 11 | calm |
| Jul | 9 | calm |
| Aug | 9 | calm |
| Sep | 9 | calm |
| Oct | 10 | calm |
| Nov | 10 | calm |
| Dec | 10 | calm |
Hazard calendar for Tianjin
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Tianjin sits in the Pacific typhoon belt; the season peaks July–October.
Tianjin's rainy season runs June–August, when most of the year's rain falls.
Tianjin sees seasonal dust haze (April–May), heaviest in April.
Best time to visit Tianjin
To characterize how pleasant the weather is in Tianjin throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around early April, Tianjin is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best times of year to visit Tianjin for general outdoor tourist activities run from late March to late May and again from early September to late October, with a peak score in the last week of April.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 0.0 | 0.8 | 4.5 | 7.5 | 7.0 | 4.8 | 3.9 | 4.7 | 7.1 | 7.3 | 3.2 | 0.1 |
| Rating | poor | poor | fair | good | good | fair | fair | fair | good | good | poor | poor |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 0.0 | poor |
| Feb | 0.8 | poor |
| Mar | 4.5 | fair |
| Apr | 7.5 | good |
| May | 7.0 | good |
| Jun | 4.8 | fair |
| Jul | 3.9 | fair |
| Aug | 4.7 | fair |
| Sep | 7.1 | good |
| Oct | 7.3 | good |
| Nov | 3.2 | poor |
| Dec | 0.1 | poor |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Tianjin for hot-weather activities run from late April to early July and again from mid August to early October, with a peak score in the last week of May.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Tianjin, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around July (highs near 32°C), the essentials are light clothes, rain gear and sun protection. In the cold season around January (highs near 2°C), pack a warm layer and a heavy coat.
In July, Tianjin sees daytime highs around 32°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 13 days see rain.
Sea temperature near Tianjin
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
The sea at the nearest coast (about 49 km away) is warmest in August at about 26°C and coldest in February near 2°C.
It's comfortable for a long swim from Jun 9 to Oct 4 — about 3.9 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 3 | 2 | 4 | 10 | 16 | 21 | 25 | 26 | 23 | 18 | 12 | 7 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Warm | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 3 | Bracing |
| Feb | 2 | Bracing |
| Mar | 4 | Bracing |
| Apr | 10 | Bracing |
| May | 16 | Cool |
| Jun | 21 | Refreshing |
| Jul | 25 | Warm |
| Aug | 26 | Warm |
| Sep | 23 | Refreshing |
| Oct | 18 | Cool |
| Nov | 12 | Bracing |
| Dec | 7 | Bracing |
UV index (midday) in Tianjin by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Tianjin peaks around July 23 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 2 | 4 | 6 | 7 | 7 | 8 | 7 | 7 | 4 | 2 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | High | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 7 | Very high |
| Jun | 7 | High |
| Jul | 8 | Very high |
| Aug | 7 | Very high |
| Sep | 7 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 2 | Low |
Average hourly UV index in Tianjin
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in July the burn window is concentrated in the middle of the day: about 7.5 hours a day reach index 3 (protection recommended), and 4 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 0 | 0 | 3 | 6 | 7 | 7.5 | 7.5 | 7.5 | 6.5 | 3.5 | 0 | 0 |
| UV ≥ 6 (h/day) | 0 | 0 | 0 | 0 | 3 | 3 | 4 | 4 | 2.5 | 0 | 0 | 0 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 0 | 0 |
| Feb | 0 | 0 |
| Mar | 3 | 0 |
| Apr | 6 | 0 |
| May | 7 | 3 |
| Jun | 7.5 | 3 |
| Jul | 7.5 | 4 |
| Aug | 7.5 | 4 |
| Sep | 6.5 | 2.5 |
| Oct | 3.5 | 0 |
| Nov | 0 | 0 |
| Dec | 0 | 0 |
Air quality in Tianjin by month
Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.
Air quality in Tianjin is worst in January — around 88 µg/m³ PM2.5 (unhealthy), about 2.3× the cleanest month (July, 38 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Tianjin's WHO annual average of 60.2 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 88 | 78 | 70 | 50 | 43 | 40 | 38 | 40 | 48 | 64 | 76 | 88 |
| Level | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Poor | Poor | Poor | Unhealthy | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 88 | Unhealthy |
| Feb | 78 | Unhealthy |
| Mar | 70 | Unhealthy |
| Apr | 50 | Poor |
| May | 43 | Poor |
| Jun | 40 | Poor |
| Jul | 38 | Poor |
| Aug | 40 | Poor |
| Sep | 48 | Poor |
| Oct | 64 | Unhealthy |
| Nov | 76 | Unhealthy |
| Dec | 88 | Unhealthy |
Growing season
The growing season in Tianjin typically lasts about 258 days, from around March 8 to November 20 — the span where a frost-free day is more likely than not. It is reliably frost-free from March 28 to November 6.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 1 | 10 | 68 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 62 | 4 |
| Frost nights | 31 | 28 | 25 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 31 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 1 | 31 |
| Feb | 10 | 28 |
| Mar | 68 | 25 |
| Apr | 99 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 62 | 24 |
| Dec | 4 | 31 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Tianjin banks about 2,553 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 0 | 0 | 6 | 162 | 354 | 469 | 543 | 508 | 357 | 153 | 1 | 0 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 0 |
| Feb | 0 |
| Mar | 6 |
| Apr | 162 |
| May | 354 |
| Jun | 469 |
| Jul | 543 |
| Aug | 508 |
| Sep | 357 |
| Oct | 153 |
| Nov | 1 |
| Dec | 0 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Tianjin receives about 4.4 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.3 and 6.4 kWh/m².
The brighter stretch of the year lasts 6.7 months, from around Mar 5 to Sep 23. The brightest month is May, averaging about 6.1 kWh/m² (intense).
The dimmest month is December, down near 2.3 kWh/m² — roughly 62% less than the May peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.7 | 3.6 | 4.9 | 5.7 | 6.2 | 6.0 | 5.4 | 4.9 | 4.6 | 3.6 | 2.6 | 2.3 |
| Level | Moderate | Moderate | Bright | Bright | Intense | Intense | Bright | Bright | Bright | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 2.7 | Moderate |
| Feb | 3.6 | Moderate |
| Mar | 4.9 | Bright |
| Apr | 5.7 | Bright |
| May | 6.2 | Intense |
| Jun | 6.0 | Intense |
| Jul | 5.4 | Bright |
| Aug | 4.9 | Bright |
| Sep | 4.6 | Bright |
| Oct | 3.6 | Moderate |
| Nov | 2.6 | Moderate |
| Dec | 2.3 | Moderate |
Where is Tianjin?
Tianjin sits at 39.1°N, 117.2°E, 11 m above sea level, in China. The nearest listed city is Beijing, 108 km away.
What Tianjin looks like
Topography around Tianjin
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tianjin.
Within 3 km, the terrain around Tianjin has only modest variations in elevation — a maximum elevation change of 31 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 54 m; within 80 km, only modest variations in elevation — a maximum elevation change of 63 m.
The land around Tianjin is covered by artificial surfaces (86%) within 3 km, artificial surfaces (59%) and cropland (26%) within 16 km, and cropland (58%) within 80 km.
China travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / I
- 220 V · 50 Hz
- Prices
- ≈ 47% of US
- price level, 2025
- GDP per capita
- $13,862
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Homicide rate
- 0.5
- per 100k, 2020
- Road deaths
- 17.4
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 464
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Tianjin (39.1422°, 117.1767°, elevation 11 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).