Climate and average weather in Hualien
In Hualien, the summers are humid, warm, wet, and mostly cloudy and the winters are cool and mostly cloudy.
Over the course of the year, the temperature in Hualien typically varies from 10°C to 27°C, and is rarely below 6°C or above 29°C. July is the hottest month of the year, while January is the coldest.
Based on the travel score, the best time of year to visit Hualien for warm-weather activities is from mid June to mid November.
- Hottest
- Jul
- 27°
- Coldest
- Jan
- 10°
- Wettest
- Sep
- 469 mm
- Driest
- Nov
- 269 mm
- Rain / yr
- 4170 mm
- 308 wet days
- Daylight
- 10.5–13.5 h
- shortest–longest
- Elevation
- 13 m
- 24.0°N
- Clearest
- Jul
- 71% cloud
Hualien is A county-administered city in Hualien County, Taiwan.
- Density
- 3,382/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Hualien 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 mid June to mid November.
Temperature through the year
Daily average highs and lows in Hualien, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.1 months, from May 26 to September 26, with daily high temperatures above 24°C. The hottest month of the year in Hualien is July, with an average high of 27°C and low of 20°C.
The cool season lasts 3.1 months, from December 5 to March 7, with daily high temperatures below 17°C. The coldest month of the year in Hualien is January, with an average low of 10°C and high of 15°C.
Days typically run about 6°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 15 | 16 | 18 | 21 | 23 | 26 | 27 | 27 | 25 | 22 | 19 | 16 |
| Avg low (°C) | 10 | 10 | 12 | 15 | 17 | 19 | 20 | 20 | 19 | 17 | 14 | 11 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 15 | 10 |
| Feb | 16 | 10 |
| Mar | 18 | 12 |
| Apr | 21 | 15 |
| May | 23 | 17 |
| Jun | 26 | 19 |
| Jul | 27 | 20 |
| Aug | 27 | 20 |
| Sep | 25 | 19 |
| Oct | 22 | 17 |
| Nov | 19 | 14 |
| Dec | 16 | 11 |
Average hourly temperature in Hualien
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 27°C, and coldest before dawn in January, near 10°C.
Hualien weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 15° / 10° | 406 | 29.6 | 10.7 | 2.4 |
| Feb | 16° / 10° | 381 | 25.9 | 11.2 | 2.7 |
| Mar | 18° / 12° | 335 | 27.6 | 11.8 | 3.4 |
| Apr | 21° / 15° | 279 | 26.5 | 12.5 | 3.8 |
| May | 23° / 17° | 371 | 29.1 | 13.1 | 3.8 |
| Jun | 26° / 19° | 337 | 25.7 | 13.5 | 3.9 |
| Jul | 27° / 20° | 294 | 21.6 | 13.3 | 4.6 |
| Aug | 27° / 20° | 353 | 22.9 | 12.8 | 4.6 |
| Sep | 25° / 19° | 469 | 22.9 | 12.1 | 4.6 |
| Oct | 22° / 17° | 344 | 23.5 | 11.4 | 4.5 |
| Nov | 19° / 14° | 269 | 24.6 | 10.8 | 3.9 |
| Dec | 16° / 11° | 331 | 28.3 | 10.5 | 2.9 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Hualien gets about 4170 mm of precipitation a year. On a typical day the chance of rain is very wet, but that rises and falls sharply with the seasons.
The wetter season lasts 7.0 months, from around Nov 19 to Jun 19, peaking in January at about 96% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 21.
September is the wettest month by volume, with 469 mm over about 23 wet days; November is the driest, with 269 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 95 | 93 | 89 | 88 | 93 | 86 | 71 | 73 | 76 | 76 | 82 | 91 |
| Rain days | 30 | 26 | 28 | 27 | 29 | 26 | 22 | 23 | 23 | 24 | 25 | 28 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 95 | 30 |
| Feb | 93 | 26 |
| Mar | 89 | 28 |
| Apr | 88 | 27 |
| May | 93 | 29 |
| Jun | 86 | 26 |
| Jul | 71 | 22 |
| Aug | 73 | 23 |
| Sep | 76 | 23 |
| Oct | 76 | 24 |
| Nov | 82 | 25 |
| Dec | 91 | 28 |
Monthly rainfall
Over a full year, Hualien collects about 4170 mm of rain across 308 wet days — roughly 347 mm in an average month.
It doesn’t fall evenly. September is the wettest month with 469 mm, while November is the driest at just 269 mm. The three wettest months alone bring about 30% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 406 | 381 | 335 | 279 | 371 | 337 | 294 | 353 | 469 | 344 | 269 | 331 |
| Rain days | 30 | 26 | 28 | 27 | 29 | 26 | 22 | 23 | 23 | 24 | 25 | 28 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 406 | 30 |
| Feb | 381 | 26 |
| Mar | 335 | 28 |
| Apr | 279 | 27 |
| May | 371 | 29 |
| Jun | 337 | 26 |
| Jul | 294 | 22 |
| Aug | 353 | 23 |
| Sep | 469 | 23 |
| Oct | 344 | 24 |
| Nov | 269 | 25 |
| Dec | 331 | 28 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Hualien, 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 June 23 and lasts for 4.0 months, ending around October 21. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 34% of the time on average.
The cloudier part of the year begins around October 22 and lasts for 5.5 months, ending around April 5. The cloudiest month is January, when it is overcast or mostly cloudy 93% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 7 | 11 | 16 | 18 | 11 | 13 | 34 | 33 | 25 | 20 | 16 | 9 |
| Cloudier (%) | 93 | 89 | 84 | 82 | 89 | 87 | 66 | 67 | 75 | 80 | 84 | 91 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 7 | 93 |
| Feb | 11 | 89 |
| Mar | 16 | 84 |
| Apr | 18 | 82 |
| May | 11 | 89 |
| Jun | 13 | 87 |
| Jul | 34 | 66 |
| Aug | 33 | 67 |
| Sep | 25 | 75 |
| Oct | 20 | 80 |
| Nov | 16 | 84 |
| Dec | 9 | 91 |
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 12, brings about 13 h 30 min of light; the shortest, around January 1, only 10 h 30 min — a swing of roughly 3 hours.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.7 | 11.2 | 11.8 | 12.5 | 13.1 | 13.5 | 13.3 | 12.8 | 12.1 | 11.4 | 10.8 | 10.5 |
| Sunrise (AM) | 6:43 | 6:33 | 6:08 | 5:37 | 5:15 | 5:10 | 5:19 | 5:32 | 5:44 | 5:56 | 6:14 | 6:34 |
| Sunset (PM) | 5:23 | 5:43 | 5:58 | 6:11 | 6:25 | 6:38 | 6:40 | 6:23 | 5:52 | 5:22 | 5:03 | 5:06 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 10.7 | 6:43 | 5:23 |
| Feb | 11.2 | 6:33 | 5:43 |
| Mar | 11.8 | 6:08 | 5:58 |
| Apr | 12.5 | 5:37 | 6:11 |
| May | 13.1 | 5:15 | 6:25 |
| Jun | 13.5 | 5:10 | 6:38 |
| Jul | 13.3 | 5:19 | 6:40 |
| Aug | 12.8 | 5:32 | 6:23 |
| Sep | 12.1 | 5:44 | 5:52 |
| Oct | 11.4 | 5:56 | 5:22 |
| Nov | 10.8 | 6:14 | 5:03 |
| Dec | 10.5 | 6:34 | 5:06 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Hualien averages about 2 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 6 days.
The sunnier stretch runs 4.0 months, from around Jun 22 to Oct 20. The sunniest month is July, with roughly 5 sunny days (gloomy).
The greyest month is January, down near 0 sunny days — about 93% fewer than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 0 | 1 | 2 | 2 | 1 | 2 | 5 | 5 | 4 | 2 | 1 | 1 |
| Sky | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy | Gloomy |
| Sunny days | Sky | |
|---|---|---|
| Jan | 0 | Gloomy |
| Feb | 1 | Gloomy |
| Mar | 2 | Gloomy |
| Apr | 2 | Gloomy |
| May | 1 | Gloomy |
| Jun | 2 | Gloomy |
| Jul | 5 | Gloomy |
| Aug | 5 | Gloomy |
| Sep | 4 | Gloomy |
| Oct | 2 | Gloomy |
| Nov | 1 | Gloomy |
| Dec | 1 | Gloomy |
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 Hualien, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 6.5 months, from around April 20 to November 3. The muggiest month is June, when the air feels humid, muggy or worse about 100% of the time.
The most comfortable stretch runs from around November 4 to April 19, and February 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 (%) | 81 | 77 | 43 | 13 | 1 | 0 | 0 | 0 | 0 | 4 | 21 | 60 |
| Comfortable (%) | 18 | 23 | 51 | 41 | 8 | 0 | 0 | 0 | 1 | 16 | 43 | 36 |
| Humid (%) | 1 | 0 | 6 | 45 | 53 | 11 | 5 | 3 | 21 | 55 | 33 | 4 |
| Muggy (%) | 0 | 0 | 0 | 1 | 37 | 86 | 86 | 90 | 77 | 25 | 3 | 0 |
| Oppressive (%) | 0 | 0 | 0 | 0 | 0 | 2 | 8 | 7 | 1 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| Jan | 81 | 18 | 1 | 0 | 0 |
| Feb | 77 | 23 | 0 | 0 | 0 |
| Mar | 43 | 51 | 6 | 0 | 0 |
| Apr | 13 | 41 | 45 | 1 | 0 |
| May | 1 | 8 | 53 | 37 | 0 |
| Jun | 0 | 0 | 11 | 86 | 2 |
| Jul | 0 | 0 | 5 | 86 | 8 |
| Aug | 0 | 0 | 3 | 90 | 7 |
| Sep | 0 | 1 | 21 | 77 | 1 |
| Oct | 4 | 16 | 55 | 25 | 0 |
| Nov | 21 | 43 | 33 | 3 | 0 |
| Dec | 60 | 36 | 4 | 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.
Wind in Hualien is steady company: average speeds sit near 4 km/h — calm — in every month of the year, with no meaningful windy or calm season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 4 | calm |
| Feb | 4 | calm |
| Mar | 4 | calm |
| Apr | 4 | calm |
| May | 4 | calm |
| Jun | 4 | calm |
| Jul | 4 | calm |
| Aug | 4 | calm |
| Sep | 4 | calm |
| Oct | 4 | calm |
| Nov | 4 | calm |
| Dec | 4 | calm |
Hazard calendar for Hualien
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
Hualien sits in the Pacific typhoon belt; the season peaks July–October.
Best time to visit Hualien
To characterize how pleasant the weather is in Hualien throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around early November, Hualien is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
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 time of year to visit Hualien for general outdoor tourist activities is from mid June to mid November, with a peak score in the last week of July.
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) | 2.4 | 2.7 | 3.4 | 3.8 | 3.8 | 4.0 | 4.6 | 4.6 | 4.6 | 4.5 | 3.9 | 2.9 |
| Rating | poor | poor | poor | fair | fair | fair | fair | fair | fair | fair | fair | poor |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 2.4 | poor |
| Feb | 2.7 | poor |
| Mar | 3.4 | poor |
| Apr | 3.8 | fair |
| May | 3.8 | fair |
| Jun | 4.0 | fair |
| Jul | 4.6 | fair |
| Aug | 4.6 | fair |
| Sep | 4.6 | fair |
| Oct | 4.5 | fair |
| Nov | 3.9 | fair |
| Dec | 2.9 | poor |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Hualien for hot-weather activities is from late June to late September, with a peak score in the third week of July.
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 Hualien, 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 27°C), the essentials are light clothes, rain gear and sun protection. In the cold season around January (highs near 15°C), pack a warm layer and rain gear.
In July, Hualien sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.
Sea temperature near Hualien
Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.
The sea offshore is warmest in August at about 29°C and coldest in January near 24°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 24 | 24 | 25 | 26 | 27 | 28 | 29 | 29 | 28 | 27 | 26 | 25 |
| Comfort | Refreshing | Refreshing | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 24 | Refreshing |
| Feb | 24 | Refreshing |
| Mar | 25 | Warm |
| Apr | 26 | Warm |
| May | 27 | Warm |
| Jun | 28 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Tropical |
| Oct | 27 | Warm |
| Nov | 26 | Warm |
| Dec | 25 | Warm |
UV index (midday) in Hualien 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 Hualien peaks around June 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 8 | 10 | 8 | 10 | 13 | 12 | 11 | 11 | 9 | 7 | 6 |
| Level | High | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 10 | Very high |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 9 | Very high |
| Nov | 7 | Very high |
| Dec | 6 | High |
Average hourly UV index in Hualien
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 June the burn window is concentrated in the middle of the day: about 8.5 hours a day reach index 3 (protection recommended), and 6.5 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) | 5.5 | 6.5 | 7.5 | 7 | 8 | 8.5 | 8.5 | 8 | 8 | 6.5 | 6 | 5 |
| UV ≥ 6 (h/day) | 2 | 3.5 | 5 | 4 | 5.5 | 6.5 | 6.5 | 6 | 5.5 | 4 | 3 | 0 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 5.5 | 2 |
| Feb | 6.5 | 3.5 |
| Mar | 7.5 | 5 |
| Apr | 7 | 4 |
| May | 8 | 5.5 |
| Jun | 8.5 | 6.5 |
| Jul | 8.5 | 6.5 |
| Aug | 8 | 6 |
| Sep | 8 | 5.5 |
| Oct | 6.5 | 4 |
| Nov | 6 | 3 |
| Dec | 5 | 0 |
Air quality in Hualien 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 Hualien is worst in March — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 11 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 17 | 22 | 22 | 17 | 15 | 11 | 12 | 11 | 11 | 11 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 17 | Moderate |
| Mar | 22 | Moderate |
| Apr | 22 | Moderate |
| May | 17 | Moderate |
| Jun | 15 | Moderate |
| Jul | 11 | Good |
| Aug | 12 | Good |
| Sep | 11 | Good |
| Oct | 11 | Good |
| Nov | 11 | Good |
| Dec | 13 | Moderate |
Growing season
Hualien is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 100 | 0 |
| Jul | 100 | 0 |
| Aug | 100 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
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. Hualien banks about 3,048 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) | 69 | 79 | 153 | 230 | 321 | 379 | 423 | 416 | 364 | 298 | 204 | 113 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 69 |
| Feb | 79 |
| Mar | 153 |
| Apr | 230 |
| May | 321 |
| Jun | 379 |
| Jul | 423 |
| Aug | 416 |
| Sep | 364 |
| Oct | 298 |
| Nov | 204 |
| Dec | 113 |
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.
Hualien receives about 3.8 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 2.1 and 5.8 kWh/m².
The brighter stretch of the year lasts 6.3 months, from around Mar 31 to Oct 9. The brightest month is July, averaging about 5.8 kWh/m² (bright).
The dimmest month is December, down near 2.2 kWh/m² — roughly 63% less than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.1 | 2.5 | 3.4 | 4.2 | 4.4 | 5.0 | 5.8 | 5.3 | 4.5 | 3.7 | 2.8 | 2.1 |
| Level | Moderate | Moderate | Moderate | Bright | Bright | Bright | Bright | Bright | Bright | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 2.1 | Moderate |
| Feb | 2.5 | Moderate |
| Mar | 3.4 | Moderate |
| Apr | 4.2 | Bright |
| May | 4.4 | Bright |
| Jun | 5.0 | Bright |
| Jul | 5.8 | Bright |
| Aug | 5.3 | Bright |
| Sep | 4.5 | Bright |
| Oct | 3.7 | Moderate |
| Nov | 2.8 | Moderate |
| Dec | 2.1 | Moderate |
Where is Hualien?
Hualien sits at 24.0°N, 121.6°E, 13 m above sea level, in Taiwan. The nearest listed city is Xiulin, 16 km away.
What Hualien looks like
Topography around Hualien
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hualien.
Within 3 km, the terrain around Hualien has only modest variations in elevation — a maximum elevation change of 101 m around an average of 16 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,378 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,837 m.
The land around Hualien is covered by artificial surfaces (44%), trees (27%) and water (22%) within 3 km, water (46%) and trees (45%) within 16 km, and trees (66%) and water (31%) within 80 km.
Taiwan travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 110 / 220 V · 60 Hz
- Happiness
- 6.7 / 10
- World Happiness, 2025
- 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 Hualien (23.9769°, 121.6044°, elevation 13 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).