Climate and average weather in Ciudad Río Bravo
In Ciudad Río Bravo, the summers are muggy, sweltering, showery, and mostly clear and the winters are warm and partly cloudy.
Over the course of the year, the temperature in Ciudad Río Bravo typically varies from 12°C to 36°C, and is rarely below 5°C or above 38°C. August is the hottest month of the year, while January is the coldest.
Based on the travel score, the best times of year to visit Ciudad Río Bravo for warm-weather activities are from early January to late March and late October to late December.
- Hottest
- Aug
- 36°
- Coldest
- Jan
- 12°
- Wettest
- Sep
- 94 mm
- Driest
- Feb
- 24 mm
- Rain / yr
- 557 mm
- 82 wet days
- Daylight
- 10.4–13.6 h
- shortest–longest
- Elevation
- 26 m
- 26.0°N
- Clearest
- Jun
- 42% cloud
Ciudad Río Bravo is municipal seat of Río Bravo, State of Tamaulipas, Mexico.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Ciudad Río Bravo 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 early January to late March.
Temperature through the year
Daily average highs and lows in Ciudad Río Bravo, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.3 months, from May 14 to September 22, with daily high temperatures above 33°C. The hottest month of the year in Ciudad Río Bravo is August, with an average high of 36°C and low of 25°C.
The cool season lasts 2.5 months, from November 30 to February 14, with daily high temperatures below 25°C. The coldest month of the year in Ciudad Río Bravo is January, with an average low of 12°C and high of 22°C.
Days typically run about 10°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 25 | 27 | 30 | 33 | 35 | 36 | 36 | 33 | 30 | 26 | 23 |
| Avg low (°C) | 12 | 14 | 17 | 20 | 23 | 25 | 25 | 25 | 24 | 20 | 16 | 13 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 22 | 12 |
| Feb | 25 | 14 |
| Mar | 27 | 17 |
| Apr | 30 | 20 |
| May | 33 | 23 |
| Jun | 35 | 25 |
| Jul | 36 | 25 |
| Aug | 36 | 25 |
| Sep | 33 | 24 |
| Oct | 30 | 20 |
| Nov | 26 | 16 |
| Dec | 23 | 13 |
How hot and cold Ciudad Río Bravo 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, Ciudad Río Bravo feels like about 42°C (around August 6). About 175 days a year carry some heat stress, and 102 of them tip into dangerous heat (feels-like above 39°C), peaking in August.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 22 | 24 | 27 | 31 | 36 | 40 | 41 | 42 | 38 | 32 | 26 | 23 |
| Air high (°C) | 22 | 25 | 27 | 30 | 33 | 35 | 36 | 36 | 33 | 30 | 26 | 23 |
| Feels-like low (°C) | 12 | 14 | 17 | 20 | 23 | 25 | 25 | 25 | 24 | 20 | 16 | 13 |
| Air low (°C) | 12 | 14 | 17 | 20 | 23 | 25 | 25 | 25 | 24 | 20 | 16 | 13 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 22 | 22 | 12 | 12 |
| Feb | 24 | 25 | 14 | 14 |
| Mar | 27 | 27 | 17 | 17 |
| Apr | 31 | 30 | 20 | 20 |
| May | 36 | 33 | 23 | 23 |
| Jun | 40 | 35 | 25 | 25 |
| Jul | 41 | 36 | 25 | 25 |
| Aug | 42 | 36 | 25 | 25 |
| Sep | 38 | 33 | 24 | 24 |
| Oct | 32 | 30 | 20 | 20 |
| Nov | 26 | 26 | 16 | 16 |
| Dec | 23 | 23 | 13 | 13 |
Average hourly temperature in Ciudad Río Bravo
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 August afternoons, near 36°C, and coldest before dawn in January, near 12°C.
Ciudad Río Bravo 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 | 22° / 12° | 28 | 5.2 | 10.6 | 7.4 |
| Feb | 25° / 14° | 24 | 4.6 | 11.1 | 7.7 |
| Mar | 27° / 17° | 36 | 5.7 | 11.8 | 7.0 |
| Apr | 30° / 20° | 43 | 5.6 | 12.6 | 5.4 |
| May | 33° / 23° | 47 | 6.7 | 13.3 | 3.9 |
| Jun | 35° / 25° | 55 | 7.7 | 13.6 | 2.8 |
| Jul | 36° / 25° | 58 | 7 | 13.5 | 2.4 |
| Aug | 36° / 25° | 44 | 8 | 12.9 | 2.2 |
| Sep | 33° / 24° | 94 | 13 | 12.2 | 3.3 |
| Oct | 30° / 20° | 62 | 7.6 | 11.4 | 5.3 |
| Nov | 26° / 16° | 37 | 5.9 | 10.7 | 7.4 |
| Dec | 23° / 13° | 31 | 5.2 | 10.4 | 7.6 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Ciudad Río Bravo gets about 557 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 2.3 months, from around Aug 11 to Oct 18, peaking in September at about 48% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Feb 13.
September is the wettest month by volume, with 94 mm over about 13 wet days; February is the driest, with 24 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 17 | 16 | 18 | 18 | 21 | 26 | 23 | 27 | 42 | 24 | 20 | 17 |
| Rain days | 5 | 5 | 6 | 6 | 7 | 8 | 7 | 8 | 13 | 8 | 6 | 5 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 17 | 5 |
| Feb | 16 | 5 |
| Mar | 18 | 6 |
| Apr | 18 | 6 |
| May | 21 | 7 |
| Jun | 26 | 8 |
| Jul | 23 | 7 |
| Aug | 27 | 8 |
| Sep | 42 | 13 |
| Oct | 24 | 8 |
| Nov | 20 | 6 |
| Dec | 17 | 5 |
Monthly rainfall
Over a full year, Ciudad Río Bravo collects about 557 mm of rain across 82 wet days — roughly 46 mm in an average month.
It doesn’t fall evenly. September is the wettest month with 94 mm, while February is the driest at just 24 mm. The three wettest months alone bring about 38% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 28 | 24 | 36 | 43 | 47 | 55 | 58 | 44 | 94 | 62 | 37 | 31 |
| Rain days | 5 | 5 | 6 | 6 | 7 | 8 | 7 | 8 | 13 | 8 | 6 | 5 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 28 | 5 |
| Feb | 24 | 5 |
| Mar | 36 | 6 |
| Apr | 43 | 6 |
| May | 47 | 7 |
| Jun | 55 | 8 |
| Jul | 58 | 7 |
| Aug | 44 | 8 |
| Sep | 94 | 13 |
| Oct | 62 | 8 |
| Nov | 37 | 6 |
| Dec | 31 | 5 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Ciudad Río Bravo, 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 May 12 and lasts for 3.6 months, ending around August 29. The clearest month is June, when the sky is clear, mostly clear, or partly cloudy 74% of the time on average.
The cloudier part of the year begins around November 8 and lasts for 6.1 months, ending around May 11. The cloudiest month is January, when it is overcast or mostly cloudy 53% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 47 | 50 | 53 | 54 | 64 | 74 | 70 | 67 | 59 | 68 | 59 | 51 |
| Cloudier (%) | 53 | 50 | 47 | 46 | 36 | 26 | 30 | 33 | 41 | 32 | 41 | 49 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 47 | 53 |
| Feb | 50 | 50 |
| Mar | 53 | 47 |
| Apr | 54 | 46 |
| May | 64 | 36 |
| Jun | 74 | 26 |
| Jul | 70 | 30 |
| Aug | 67 | 33 |
| Sep | 59 | 41 |
| Oct | 68 | 32 |
| Nov | 59 | 41 |
| Dec | 51 | 49 |
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 6, brings about 13 h 36 min of light; the shortest, around January 1, only 10 h 24 min — a swing of roughly 3 h 12 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.6 | 11.1 | 11.8 | 12.6 | 13.3 | 13.6 | 13.5 | 12.9 | 12.2 | 11.4 | 10.7 | 10.4 |
| Sunrise (AM) | 7:25 | 7:14 | 6:48 | 6:14 | 5:51 | 5:44 | 5:54 | 6:09 | 6:22 | 6:36 | 6:56 | 7:17 |
| Sunset (PM) | 5:58 | 6:20 | 6:36 | 6:51 | 7:07 | 7:21 | 7:22 | 7:04 | 6:31 | 5:59 | 5:39 | 5:40 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 10.6 | 7:25 | 5:58 |
| Feb | 11.1 | 7:14 | 6:20 |
| Mar | 11.8 | 6:48 | 6:36 |
| Apr | 12.6 | 6:14 | 6:51 |
| May | 13.3 | 5:51 | 7:07 |
| Jun | 13.6 | 5:44 | 7:21 |
| Jul | 13.5 | 5:54 | 7:22 |
| Aug | 12.9 | 6:09 | 7:04 |
| Sep | 12.2 | 6:22 | 6:31 |
| Oct | 11.4 | 6:36 | 5:59 |
| Nov | 10.7 | 6:56 | 5:39 |
| Dec | 10.4 | 7:17 | 5:40 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Ciudad Río Bravo averages about 13 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 10 and 17 days.
The sunnier stretch runs 3.2 months, from around May 22 to Aug 26. The sunniest month is June, with roughly 16 sunny days (bright).
The greyest month is January, down near 11 sunny days — about 34% fewer than the June peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 11 | 11 | 12 | 11 | 13 | 16 | 17 | 15 | 12 | 15 | 13 | 12 |
| Sky | Mixed | Mixed | Mixed | Mixed | Mixed | Bright | Bright | Mixed | Mixed | Bright | Mixed | Mixed |
| Sunny days | Sky | |
|---|---|---|
| Jan | 11 | Mixed |
| Feb | 11 | Mixed |
| Mar | 12 | Mixed |
| Apr | 11 | Mixed |
| May | 13 | Mixed |
| Jun | 16 | Bright |
| Jul | 17 | Bright |
| Aug | 15 | Mixed |
| Sep | 12 | Mixed |
| Oct | 15 | Bright |
| Nov | 13 | Mixed |
| Dec | 12 | Mixed |
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 Ciudad Río Bravo, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 6.6 months, from around April 8 to October 24. 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 October 25 to April 7, and January is the most comfortable month — the air is dry or comfortable 74% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 57 | 44 | 29 | 13 | 2 | 0 | 0 | 0 | 1 | 11 | 30 | 53 |
| Comfortable (%) | 17 | 16 | 14 | 10 | 3 | 0 | 0 | 0 | 2 | 10 | 15 | 13 |
| Humid (%) | 16 | 19 | 18 | 15 | 7 | 1 | 0 | 0 | 6 | 16 | 20 | 16 |
| Muggy (%) | 10 | 20 | 33 | 33 | 21 | 6 | 2 | 3 | 11 | 22 | 24 | 16 |
| Oppressive (%) | 0 | 1 | 6 | 27 | 59 | 70 | 80 | 77 | 55 | 34 | 10 | 2 |
| Miserable (%) | 0 | 0 | 0 | 1 | 8 | 22 | 18 | 20 | 24 | 7 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| Jan | 57 | 17 | 16 | 10 | 0 | 0 |
| Feb | 44 | 16 | 19 | 20 | 1 | 0 |
| Mar | 29 | 14 | 18 | 33 | 6 | 0 |
| Apr | 13 | 10 | 15 | 33 | 27 | 1 |
| May | 2 | 3 | 7 | 21 | 59 | 8 |
| Jun | 0 | 0 | 1 | 6 | 70 | 22 |
| Jul | 0 | 0 | 0 | 2 | 80 | 18 |
| Aug | 0 | 0 | 0 | 3 | 77 | 20 |
| Sep | 1 | 2 | 6 | 11 | 55 | 24 |
| Oct | 11 | 10 | 16 | 22 | 34 | 7 |
| Nov | 30 | 15 | 20 | 24 | 10 | 0 |
| Dec | 53 | 13 | 16 | 16 | 2 | 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 Ciudad Río Bravo is typically light breeze, near 17 km/h, and varies moderately with the seasons.
The windier part of the year lasts 6.0 months, from around Feb 11 to Aug 13. The windiest month is May, averaging about 19 km/h (light breeze).
The calmer part of the year runs from around Aug 14 to Feb 10, with September the calmest month at about 13 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 16 | 17 | 18 | 19 | 19 | 18 | 18 | 16 | 13 | 14 | 15 | 16 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 16 | light breeze |
| Feb | 17 | light breeze |
| Mar | 18 | light breeze |
| Apr | 19 | light breeze |
| May | 19 | light breeze |
| Jun | 18 | light breeze |
| Jul | 18 | light breeze |
| Aug | 16 | light breeze |
| Sep | 13 | light breeze |
| Oct | 14 | light breeze |
| Nov | 15 | light breeze |
| Dec | 16 | light breeze |
Best time to visit Ciudad Río Bravo
To characterize how pleasant the weather is in Ciudad Río Bravo throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late March, Ciudad Río Bravo 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 Ciudad Río Bravo for general outdoor tourist activities is from late October to late March, with a peak score in the last week of November.
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) | 7.4 | 7.7 | 7.0 | 5.4 | 3.9 | 2.8 | 2.4 | 2.3 | 3.3 | 5.3 | 7.3 | 7.6 |
| Rating | good | ideal | good | fair | fair | poor | poor | poor | poor | fair | good | ideal |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 7.4 | good |
| Feb | 7.7 | ideal |
| Mar | 7.0 | good |
| Apr | 5.4 | fair |
| May | 3.9 | fair |
| Jun | 2.8 | poor |
| Jul | 2.4 | poor |
| Aug | 2.3 | poor |
| Sep | 3.3 | poor |
| Oct | 5.3 | fair |
| Nov | 7.3 | good |
| Dec | 7.6 | ideal |
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 Ciudad Río Bravo for hot-weather activities run from early February to early June and again from late September to mid December, with a peak score in the last week of October.
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 Ciudad Río Bravo, 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 August (highs near 36°C), the essentials are light clothes, rain gear and sun protection. In the cold season around January (highs near 22°C), pack light clothes.
In August, Ciudad Río Bravo sees daytime highs around 36°C and nights near 25°C. Pack light clothes and sun protection. Worth having: rain gear. About 8 days see rain.
UV index (midday) in Ciudad Río Bravo 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 Ciudad Río Bravo peaks around June 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 5 (moderate).
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) | 5 | 7 | 8 | 11 | 9 | 12 | 11 | 11 | 10 | 8 | 6 | 5 |
| Level | Moderate | High | Very high | Extreme | Very high | Extreme | Extreme | Extreme | Very high | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 5 | Moderate |
| Feb | 7 | High |
| Mar | 8 | Very high |
| Apr | 11 | Extreme |
| May | 9 | Very high |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 10 | Very high |
| Oct | 8 | Very high |
| Nov | 6 | High |
| Dec | 5 | Moderate |
Average hourly UV index in Ciudad Río Bravo
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) | 4.5 | 6 | 7 | 8 | 8 | 8.5 | 8.5 | 8 | 7.5 | 6.5 | 5.5 | 4.5 |
| UV ≥ 6 (h/day) | 0 | 2.5 | 4 | 6 | 5.5 | 6.5 | 6 | 6 | 5 | 3.5 | 0 | 0 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 4.5 | 0 |
| Feb | 6 | 2.5 |
| Mar | 7 | 4 |
| Apr | 8 | 6 |
| May | 8 | 5.5 |
| Jun | 8.5 | 6.5 |
| Jul | 8.5 | 6 |
| Aug | 8 | 6 |
| Sep | 7.5 | 5 |
| Oct | 6.5 | 3.5 |
| Nov | 5.5 | 0 |
| Dec | 4.5 | 0 |
Air quality in Ciudad Río Bravo 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 Ciudad Río Bravo is worst in July — around 26 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (November, 7 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) | 9 | 10 | 11 | 13 | 20 | 21 | 26 | 19 | 12 | 8 | 7 | 9 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 10 | Good |
| Mar | 11 | Good |
| Apr | 13 | Moderate |
| May | 20 | Moderate |
| Jun | 21 | Moderate |
| Jul | 26 | Moderate |
| Aug | 19 | Moderate |
| Sep | 12 | Moderate |
| Oct | 8 | Good |
| Nov | 7 | Good |
| Dec | 9 | Good |
Growing season
Ciudad Río Bravo 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 (%) | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 99 | 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 | 99 | 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. Ciudad Río Bravo banks about 5,315 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around August.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 215 | 256 | 373 | 453 | 556 | 598 | 634 | 638 | 552 | 471 | 330 | 237 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 215 |
| Feb | 256 |
| Mar | 373 |
| Apr | 453 |
| May | 556 |
| Jun | 598 |
| Jul | 634 |
| Aug | 638 |
| Sep | 552 |
| Oct | 471 |
| Nov | 330 |
| Dec | 237 |
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.
Ciudad Río Bravo receives about 5.0 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 3.0 and 6.8 kWh/m².
The brighter stretch of the year lasts 6.3 months, from around Mar 23 to Sep 29. The brightest month is July, averaging about 6.7 kWh/m² (intense).
The dimmest month is December, down near 3.1 kWh/m² — roughly 54% less than the July peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.2 | 4.0 | 4.8 | 5.8 | 6.3 | 6.6 | 6.7 | 6.4 | 5.2 | 4.5 | 3.5 | 3.0 |
| Level | Moderate | Moderate | Bright | Bright | Intense | Intense | Intense | Intense | Bright | Bright | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 3.2 | Moderate |
| Feb | 4.0 | Moderate |
| Mar | 4.8 | Bright |
| Apr | 5.8 | Bright |
| May | 6.3 | Intense |
| Jun | 6.6 | Intense |
| Jul | 6.7 | Intense |
| Aug | 6.4 | Intense |
| Sep | 5.2 | Bright |
| Oct | 4.5 | Bright |
| Nov | 3.5 | Moderate |
| Dec | 3.0 | Moderate |
Where is Ciudad Río Bravo?
Ciudad Río Bravo sits at 26.0°N, 98.1°W, 26 m above sea level, in Mexico. The nearest listed city is Donna, 21 km away.
Topography around Ciudad Río Bravo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Ciudad Río Bravo.
Within 3 km, the terrain around Ciudad Río Bravo has only modest variations in elevation — a maximum elevation change of 14 m around an average of 29 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 39 m; within 80 km, significant variations in elevation — a maximum elevation change of 310 m.
The land around Ciudad Río Bravo is covered by artificial surfaces (45%) and cropland (40%) within 3 km, cropland (75%) within 16 km, and cropland (45%) within 80 km.
Mexico travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / B
- 120 / 127 V · 60 Hz
- Prices
- ≈ 54% of US
- price level, 2025
- GDP per capita
- $13,889
- 2025
- Happiness
- 7.0 / 10
- World Happiness, 2025
- Safe drinking water
- 43%
- of population, 2024
- Homicide rate
- 24.9
- per 100k, 2023
- Road deaths
- 12.8
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Very low
- EF EPI 440
- 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 Ciudad Río Bravo (25.9851°, -98.0896°, elevation 26 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. 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).