Ciudad Acuña weather in May

In May, Ciudad Acuña sees average daytime highs of 33°C and overnight lows near 21°C, with 64 mm of rain across 7.6 wet days and about 13.4 hours of daylight. It is the 5th-warmest and 2nd-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 muggy.

Daylight stretches from about 13 h 06 min at the start of May to 13 h 42 min by month's end. Set against the rest of the year, May is Ciudad Acuña's 12th-clearest and 2nd-windiest month. For the whole year in context, see Ciudad Acuña's year-round climate.

Daytime high
33°
5th warmest
Overnight low
21°
8th coldest
Rainfall
64 mm
7.6 wet days
Daylight
13 h 30 min
5:56 AM – 7:24 PM
Cloud cover
48%
12th clearest
Wind
17 km/h
2nd windiest
Solar energy
6.17 kWh/m²
Travel score
3.9
out of 10

Ciudad Acuña is municipal seat of Acuña, State of Coahuila, Mexico.

Founded
1877

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 Acuña reaches about 33°C in the afternoon and slips back to 21°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 38°C. Set against its neighbours, May runs about 3°C warmer than April and about 3°C cooler than June.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
13119
23119
33219
43220
53220
63220
73220
83220
93220
103220
113221
123221
133321
143321
153321
163321
173321
183321
193322
203322
213322
223322
233322
243422
253422
263422
273423
283423
293423
303423
313523

How May really feels in Ciudad Acuña

Once humidity and wind are folded in, May averages 24 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
24
heat index over the day's high
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 Acuña weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 223.510.37.1
Feb21° / 23410.97.6
Mar25° / 13°385.211.87.7
Apr29° / 17°425.112.76.2
May33° / 21°647.613.43.9
Jun36° / 24°39613.82.5
Jul36° / 25°415.513.72.1
Aug36° / 25°414.713.12.1
Sep33° / 22°657.512.23.9
Oct28° / 17°55611.36.6
Nov23° / 11°304.410.57.9
Dec18° / 223.810.27.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of May, with mostly cloudy or overcast conditions the remaining 38%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26238
36238
46238
56238
66238
76238
86238
96238
106238
116238
126238
136238
146238
156238
166139
176139
186040
196040
206139
216040
226139
236139
246238
256238
266337
276436
286436
296535
306634
316634

Chance of precipitation in May

Any precipitation

Ciudad Acuña gets around 64 mm of rain over 7.6 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 24% and peaks near 26% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
120
220
321
421
521
622
722
823
923
1024
1124
1224
1324
1425
1525
1625
1725
1826
1926
2026
2126
2226
2326
2426
2526
2625
2725
2825
2925
3025
3124

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 42% of days. Sticky, muggy-or-worse air turns up on roughly 49% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1351522262
2331423272
3321423293
4301324313
5281324323
6261225343
7241225354
8231226364
9211226374
10201126384
11191127394
12181127395
13161128395
14151128405
15151129406
16141029416
17131029426
18121029427
1911929438
2010928448
219828469
229828479
2387274810
2477274910
2567265011
2657265012
2746255312
2836255313
2936245314
3026245414
3126235415

Wind in May

Winds average 17 km/h in May.

Across May, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1618light breeze
1718light breeze
1818light breeze
1918light breeze
2018light breeze
2118light breeze
2218light breeze
2318light breeze
2418light breeze
2518light breeze
2618light breeze
2718light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 06 min at the start of May to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over May. Sunrise moves from 6:08 AM to 5:50 AM, and sunset from 7:14 PM to 7:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:087:14
213.16:077:15
313.26:067:16
413.26:057:16
513.26:047:17
613.26:037:18
713.36:027:18
813.36:027:19
913.36:017:20
1013.36:007:20
1113.45:597:21
1213.45:597:21
1313.45:587:22
1413.45:577:23
1513.45:577:23
1613.55:567:24
1713.55:567:25
1813.55:557:25
1913.55:547:26
2013.55:547:26
2113.65:537:27
2213.65:537:28
2313.65:527:28
2413.65:527:29
2513.65:527:29
2613.65:517:30
2713.75:517:31
2813.75:507:31
2913.75:507:32
3013.75:507:32
3113.75:507:33

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.17 kWh/m².

For context, solar energy here swings from a low near 3.13 kWh/m² to a high of 6.87 kWh/m² in July across the year — May's 6.17 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.4Intense
296.4Intense
306.4Intense
316.5Intense
Planning a trip in May

Is May a good time to visit Ciudad Acuña?

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
6.7
Beach & pool
5th-best month of the year

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

What to pack for Ciudad Acuña in May

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

In May, Ciudad Acuña sees daytime highs around 33°C and nights near 21°C. Pack light clothes and sun protection. About 8 days see rain.

light clothessun protection

UV index in Ciudad Acuña in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (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 Acuña peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 11Dec 18UV 4
UV index (midday)Level
Jan5Moderate
Feb6High
Mar8Very high
Apr10Very high
May10Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct7High
Nov5Moderate
Dec4Moderate

Air quality in Ciudad Acuña 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 Acuña is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (January, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1516 µg/m³Jan 166 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar7Good
Apr8Good
May13Moderate
Jun14Moderate
Jul17Moderate
Aug12Moderate
Sep10Good
Oct7Good
Nov7Good
Dec6Good
Location & terrain

Where is Ciudad Acuña?

Ciudad Acuña sits at 29.3°N, 101.0°W, 283 m above sea level, in Mexico. The nearest listed city is Del Rio, 7.0 km away.

Topography around Ciudad Acuña

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

Within 3 km, the terrain around Ciudad Acuña has only modest variations in elevation — a maximum elevation change of 68 m around an average of 287 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 147 m; within 80 km, large variations in elevation — a maximum elevation change of 1,150 m.

The land around Ciudad Acuña is covered by artificial surfaces (53%) and trees (20%) within 3 km, shrubs (76%) within 16 km, and shrubs (81%) within 80 km.

3 km
68 m
16 km
147 m
80 km
1,150 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Del Rio 7.0 km · Piedras Negras 81 km · Eagle Pass 81 km · Nava 102 km · Allende 110 km · Uvalde 114 km · Nueva Rosita 156 km · Sabinas 164 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 Acuña (29.3232°, -100.9522°, elevation 283 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).