Reynosa weather in May

In May, Reynosa sees average daytime highs of 33°C and overnight lows near 23°C, with 49 mm of rain across 6.6 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 35°C by the end. The sky is clear or mostly clear about 43% 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 Reynosa's 6th-clearest and 1st-windiest month. For the whole year in context, see Reynosa's year-round climate.

Daytime high
33°
5th warmest
Overnight low
23°
8th coldest
Rainfall
49 mm
6.6 wet days
Daylight
13 h 18 min
5:51 AM – 7:08 PM
Cloud cover
48%
6th clearest
Wind
20 km/h
1st windiest
Solar energy
6.31 kWh/m²
Travel score
3.6
out of 10

Reynosa is municipal seat of Reynosa, State of Tamaulipas, Mexico.

Founded
1749

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 35°C by the end.

A typical May day in Reynosa 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 37°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
33322
43322
53322
63322
73322
83322
93323
103323
113323
123323
133323
143323
153323
163323
173323
183323
193423
203423
213423
223424
233424
243424
253424
263424
273424
283424
293524
303524
313524

How May really feels in Reynosa

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
3 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.

Reynosa 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°264.410.67.6
Feb25° / 14°244.311.17.8
Mar28° / 17°365.511.86.8
Apr31° / 20°455.612.65.1
May33° / 23°496.613.33.6
Jun35° / 25°526.813.62.5
Jul36° / 25°546.113.52.2
Aug36° / 25°396.712.92.0
Sep34° / 24°8912.212.23.1
Oct31° / 20°60711.45.2
Nov26° / 16°365.310.77.5
Dec23° / 12°30510.47.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 22% of May, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35842
45842
55743
65842
75842
85842
95941
106040
116040
126139
136337
146337
156436
166535
176535
186733
196733
206832
216832
227030
237030
247129
257228
267228
277426
287426
297426
307624
317624

Chance of precipitation in May

Any precipitation

Reynosa gets around 49 mm of rain over 6.6 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 22% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
119
219
319
420
520
620
721
821
921
1022
1122
1222
1322
1422
1522
1622
1722
1822
1922
2022
2121
2221
2321
2421
2521
2621
2721
2821
2921
3021
3121

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 58% of days. Sticky, muggy-or-worse air turns up on roughly 86% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1881328421
2881227441
3771226461
4771225481
5761125501
6661124512
7661124522
8551024542
9451023562
10451023562
11341024563
12341024563
13241024564
14241025554
1523925565
1623925565
1713825576
1813825576
1913725586
2012725587
2112625597
2212624607
2312524617
2412423637
2511422648
2601321678
2701321678
2801220698
2900219718
3000118738
3100117739

Wind in May

Winds average 20 km/h in May, the windiest month of the year.

Across May, daily wind ranges from about 19 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
220breezy
320breezy
420breezy
520breezy
620breezy
720breezy
820light breeze
920light breeze
1020light breeze
1120light breeze
1220light breeze
1320light breeze
1420light breeze
1520light breeze
1620light breeze
1720light breeze
1819light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2819light breeze
2919light breeze
3019light breeze
3119light 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 5:46 AM, and sunset from 6:59 PM to 7:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:016:59
213.06:007:00
313.06:007:00
413.05:597:01
513.15:587:02
613.15:577:02
713.15:577:03
813.15:567:03
913.15:557:04
1013.25:557:04
1113.25:547:05
1213.25:537:05
1313.25:537:06
1413.25:527:06
1513.35:527:07
1613.35:517:08
1713.35:517:08
1813.35:507:09
1913.35:507:09
2013.35:497:10
2113.45:497:10
2213.45:487:11
2313.45:487:11
2413.45:487:12
2513.45:477:12
2613.45:477:13
2713.45:477:13
2813.55:467:14
2913.55:467:14
3013.55:467:15
3113.55:467:15

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.31 kWh/m².

For context, solar energy here swings from a low near 3.1 kWh/m² to a high of 6.79 kWh/m² in July across the year — May's 6.31 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.2Intense
46.2Intense
56.2Intense
66.2Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.4Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.6Intense
306.6Intense
316.6Intense
Planning a trip in May

Is May a good time to visit Reynosa?

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

3.6
Sightseeing
8th-best month of the year
6.7
Beach & pool
6th-best month of the year

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

What to pack for Reynosa in May

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

In May, Reynosa 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 Reynosa 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 Reynosa 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 highExtremeExtremeVery highHighJun 21UV 12Dec 22UV 5
UV index (midday)Level
Jan5Moderate
Feb7Very high
Mar8Very high
Apr11Extreme
May9Very high
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep10Very high
Oct8Very high
Nov6High
Dec5Moderate

Air quality in Reynosa 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 Reynosa 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 Reynosa?

Reynosa sits at 26.1°N, 98.3°W, 38 m above sea level, in Mexico. The nearest listed city is McAllen, 15 km away.

Topography around Reynosa

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Reynosa.

Within 3 km, the terrain around Reynosa has only modest variations in elevation — a maximum elevation change of 34 m around an average of 37 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 85 m; within 80 km, significant variations in elevation — a maximum elevation change of 310 m.

The land around Reynosa is covered by artificial surfaces (69%) and trees (22%) within 3 km, trees (28%), cropland (25%) and artificial surfaces (24%) within 16 km, and cropland (39%) and shrubs (21%) within 80 km.

3 km
34 m
16 km
85 m
80 km
310 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: McAllen 15 km · Mission 16 km · Pharr 16 km · San Juan 18 km · Alamo 20 km · Ciudad Río Bravo 22 km · Alton 23 km · Donna 25 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 Reynosa (26.08°, -98.2846°, elevation 38 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).