Ciudad Río Bravo weather in May

In May, Ciudad Río Bravo sees average daytime highs of 33°C and overnight lows near 23°C, with 47 mm of rain across 6.7 wet days and about 13.3 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 32°C in the first days to 34°C by the end. The sky is clear or mostly clear about 41% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 13 hours at the start of May to 13 h 30 min by month's end. Set against the rest of the year, May is Ciudad Río Bravo's 5th-clearest and 1st-windiest month. For the whole year in context, see Ciudad Río Bravo's year-round climate.

Daytime high
33°
5th warmest
Overnight low
23°
8th coldest
Rainfall
47 mm
6.7 wet days
Daylight
13 h 18 min
5:51 AM – 7:07 PM
Cloud cover
48%
5th clearest
Wind
19 km/h
1st windiest
Solar energy
6.27 kWh/m²
Travel score
3.9
out of 10

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.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 32°C in the first days to 34°C by the end.

A typical May day in Ciudad Río Bravo reaches about 33°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 36°C. Set against its neighbours, May runs about 3°C warmer than April and about 2°C cooler than June.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13222
23222
33222
43222
53222
63222
73222
83222
93223
103223
113223
123323
133323
143323
153323
163323
173323
183323
193323
203323
213324
223324
233324
243324
253424
263424
273424
283424
293424
303424
313424

How May really feels in Ciudad Río Bravo

Once humidity and wind are folded in, May averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
2 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Ciudad Río Bravo weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 12°285.210.67.4
Feb25° / 14°244.611.17.7
Mar27° / 17°365.711.87.0
Apr30° / 20°435.612.65.4
May33° / 23°476.713.33.9
Jun35° / 25°557.713.62.8
Jul36° / 25°58713.52.4
Aug36° / 25°44812.92.2
Sep33° / 24°941312.23.3
Oct30° / 20°627.611.45.3
Nov26° / 16°375.910.77.4
Dec23° / 13°315.210.47.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 23% of May, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25743
35842
45743
55644
65743
75743
85644
95743
105743
115842
126040
136040
146139
156238
166337
176436
186535
196634
206733
216832
226931
237030
247129
257129
267129
277327
287327
297426
307426
317525

Chance of precipitation in May

Any precipitation

Ciudad Río Bravo gets around 47 mm of rain over 6.7 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 21% and peaks near 23% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
117
218
318
418
518
619
719
819
920
1020
1120
1221
1321
1421
1522
1622
1722
1822
1922
2023
2123
2223
2323
2423
2523
2623
2723
2823
2923
3023
3123

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the oppressive band about 60% of days. Sticky, muggy-or-worse air turns up on roughly 88% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1781125472
2781124482
3671123512
4671023522
5661022542
656922553
755922563
845922573
945822574
1034822594
1134822585
1224822595
1324823576
1423823586
1513723597
1613723597
1713723588
1812623599
1912623599
20126225910
21125226010
22125216011
23115206211
24114196411
25014186512
26013176712
27013166812
28002157013
29002147113
30001137214
31001127215

Wind in May

Winds average 19 km/h in May, the windiest month of the year.

Across May, daily wind ranges from about 18 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
120light breeze
220light breeze
320light breeze
420light breeze
520light breeze
620light breeze
720light breeze
820light breeze
920light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1719light breeze
1819light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 hours at the start of May to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over May. Sunrise moves from 6:01 AM to 5:45 AM, and sunset from 6:59 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:016:59
213.06:006:59
313.05:597:00
413.05:587:00
513.15:587:01
613.15:577:01
713.15:567:02
813.15:557:02
913.15:557:03
1013.25:547:03
1113.25:537:04
1213.25:537:04
1313.25:527:05
1413.25:527:06
1513.25:517:06
1613.35:517:07
1713.35:507:07
1813.35:507:08
1913.35:497:08
2013.35:497:09
2113.45:487:09
2213.45:487:10
2313.45:477:10
2413.45:477:11
2513.45:477:11
2613.45:467:12
2713.45:467:12
2813.55:467:13
2913.55:457:14
3013.55:457:14
3113.55:457:14

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.27 kWh/m².

For context, solar energy here swings from a low near 3.03 kWh/m² to a high of 6.74 kWh/m² in July across the year — May's 6.27 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.3Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.4Intense
226.4Intense
236.4Intense
246.4Intense
256.4Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
316.5Intense
Planning a trip in May

Is May a good time to visit Ciudad Río Bravo?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.9
Sightseeing
8th-best month of the year
6.9
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Ciudad Río Bravo. The water and warmth also suit a beach or pool day.

What to pack for Ciudad Río Bravo in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Ciudad Río Bravo sees daytime highs around 33°C and nights near 23°C. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in Ciudad Río Bravo in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

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.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highExtremeVery highHighJun 21UV 12Dec 22UV 5
UV index (midday)Level
Jan5Moderate
Feb7High
Mar8Very high
Apr11Extreme
May9Very high
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep10Very high
Oct8Very high
Nov6High
Dec5Moderate

Air quality in Ciudad Río Bravo in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual 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).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1625 µg/m³Nov 107 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar11Good
Apr13Moderate
May20Moderate
Jun21Moderate
Jul26Moderate
Aug19Moderate
Sep12Moderate
Oct8Good
Nov7Good
Dec9Good
Location & terrain

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.

3 km
14 m
16 km
39 m
80 km
310 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Donna 21 km · Weslaco 22 km · Reynosa 22 km · Alamo 22 km · San Juan 24 km · Pharr 25 km · Mercedes 25 km · McAllen 28 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
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

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).