Ciudad Acuña climate — normals and trends
Ciudad Acuña (Mexico) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 21.5 °C and it receives 483 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (30.3 °C on average) and the coldest is January (11.1 °C). Rainfall peaks in May.
Ciudad Acuña averages 5 frost days, 162 hot days (≥ 30 °C) and 65 rainy days per year.
Ciudad Acuña has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 44.0 °C (on 28 June 1994) and the coldest -11.7 °C (on 19 February 2021).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Ciudad AcuñaCoahuila
- coords
- 29.32°, -100.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
21.5°C
Average daily high
27.5°C
Average daily low
16.3°C
Annual rainfall
483mm
Sunshine / day
10.0h
Mean relative humidity
58%
Average peak wind
21.8km/h
Seasonal range
19.2°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
162 d/yr
Rainy days (≥ 1 mm)
65 d/yr
Annual snowfall
1.0 cm
Average feels-like high
26.9 °C
Average feels-like low
15.3 °C
Average peak gust
38.7 km/h
Tropical nights (≥ 20 °C)
152 d/yr
Solar radiation
18.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.26 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
44.0 °C
28 June 1994
Coldest day
-11.7 °C
19 February 2021
Wettest day
163 mm
9 October 2015
Windiest day
61.2 km/h
1 April 1983
Strongest gust
101.9 km/h
1 April 1983
Hottest feels-like
47.0 °C
21 June 2023
Coldest feels-like
-17.6 °C
15 February 2021
Snowiest day
11.1 cm
18 February 2021
Sunniest day
13.7 h
3 July 2013
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 15.2 °C | -2.2 °C | 12 mm | -11 mm |
| Feb | 22.3 °C | +2.1 °C | 4 mm | -23 mm |
| Mar | 28.9 °C | +4.3 °C | 21 mm | -10 mm |
| Apr | 31.8 °C | +2.9 °C | 28 mm | -18 mm |
| May | 35.4 °C | +3.4 °C | 43 mm | -27 mm |
| Jun | 36.4 °C | +1.5 °C | 18 mm | -28 mm |
| Jul | 34.4 °C | -1.4 °C | 88 mm | +51 mm |
| Aug | 37.2 °C | +1.4 °C | 12 mm | -32 mm |
| Sep | 32.8 °C | +0.4 °C | 64 mm | +4 mm |
| Oct | 31.1 °C | +3.1 °C | 14 mm | -40 mm |
| Nov | 25.6 °C | +3.5 °C | 13 mm | -13 mm |
| Dec | 21.3 °C | +3.0 °C | 5 mm | -16 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Ciudad Acuña?
Ciudad Acuña has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 21.5 °C and it receives 483 mm of precipitation per year.
What is the hottest day ever recorded in Ciudad Acuña?
The hottest day measured in Ciudad Acuña between 1940 and 2025 was 28 June 1994, reaching 44.0 °C.
What is the coldest day in Ciudad Acuña?
The coldest day measured in Ciudad Acuña between 1940 and 2025 was 19 February 2021, at -11.7 °C.
Does it snow in Ciudad Acuña?
Almost never: Ciudad Acuña sees virtually no snow, with about 5 frost days per year.
Has the climate of Ciudad Acuña warmed?
Yes: Ciudad Acuña warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ciudad Acuña?
The wettest day measured in Ciudad Acuña between 1940 and 2025 was 9 October 2015, with 163 mm of rain in 24 hours.
What was the windiest day in Ciudad Acuña?
The windiest day measured in Ciudad Acuña between 1940 and 2025 was 1 April 1983, with winds reaching 61.2 km/h.
What is the warmest month in Ciudad Acuña?
The warmest month in Ciudad Acuña is July (30.3 °C on average); the coldest is January (11.1 °C).
How much does it rain in Ciudad Acuña?
Ciudad Acuña receives on average 483 mm of precipitation per year, spread over about 65 rainy days.
Is it sunny in Ciudad Acuña?
Ciudad Acuña gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ciudad Acuña?
The heaviest 24-hour snowfall measured in Ciudad Acuña between 1940 and 2025 was 18 February 2021, with 11.1 cm.
Are there tropical nights in Ciudad Acuña?
Yes: Ciudad Acuña has on average 152 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ciudad Acuña?
In Ciudad Acuña, between 1940 and 2025, the highest apparent temperature reached 47.0 °C on 21 June 2023, and the lowest was -17.6 °C on 15 February 2021.
Compare Ciudad Acuña with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ciudad Acuña