Ciudad Constitución climate — normals and trends
Ciudad Constitución (Mexico) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 22.2 °C and it receives 96 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 August (28.1 °C on average) and the coldest is January (17.7 °C). Rainfall peaks in September.
Ciudad Constitución averages 0 frost days, 176 hot days (≥ 30 °C) and 12 rainy days per year.
Ciudad Constitución has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.6 °C (on 14 July 1997) and the coldest 2.3 °C (on 5 January 1971).
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 ConstituciónBaja California Sur
- coords
- 25.03°, -111.66°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
22.2°C
Average daily high
29.7°C
Average daily low
16.2°C
Annual rainfall
96mm
Sunshine / day
11.4h
Mean relative humidity
61%
Average peak wind
23.4km/h
Seasonal range
10.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
176 d/yr
Rainy days (≥ 1 mm)
12 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.1 °C
Average feels-like low
16.2 °C
Average peak gust
39.3 km/h
Tropical nights (≥ 20 °C)
98 d/yr
Solar radiation
22.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.19 · 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
42.6 °C
14 July 1997
Coldest day
2.3 °C
5 January 1971
Wettest day
177 mm
29 September 2001
Windiest day
105.4 km/h
23 July 1948
Strongest gust
121.7 km/h
25 July 1948
Hottest feels-like
47.2 °C
14 September 2014
Coldest feels-like
-2.1 °C
5 February 2011
Sunniest day
13.0 h
9 May 1940
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 | 24.7 °C | -0.2 °C | 1 mm | -9 mm |
| Feb | 26.8 °C | +0.9 °C | 0 mm | -6 mm |
| Mar | 26.7 °C | +0.1 °C | 0 mm | -3 mm |
| Apr | 27.9 °C | -0.2 °C | 0 mm | -0 mm |
| May | 28.7 °C | -0.3 °C | 1 mm | +0 mm |
| Jun | 31.4 °C | 0.0 °C | 0 mm | -1 mm |
| Jul | 34.2 °C | -0.4 °C | 0 mm | -3 mm |
| Aug | 36.2 °C | +0.9 °C | 15 mm | +0 mm |
| Sep | 35.2 °C | +0.7 °C | 88 mm | +59 mm |
| Oct | 32.7 °C | +0.7 °C | 3 mm | -7 mm |
| Nov | 29.5 °C | +0.8 °C | 3 mm | -5 mm |
| Dec | 29.2 °C | +3.6 °C | 10 mm | -2 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 Constitución?
Ciudad Constitución has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 22.2 °C and it receives 96 mm of precipitation per year.
What is the hottest day ever recorded in Ciudad Constitución?
The hottest day measured in Ciudad Constitución between 1940 and 2025 was 14 July 1997, reaching 42.6 °C.
What is the coldest day in Ciudad Constitución?
The coldest day measured in Ciudad Constitución between 1940 and 2025 was 5 January 1971, at 2.3 °C.
Does it snow in Ciudad Constitución?
Almost never: Ciudad Constitución sees virtually no snow, with about 0 frost days per year.
Has the climate of Ciudad Constitución warmed?
Yes: Ciudad Constitución warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ciudad Constitución?
The wettest day measured in Ciudad Constitución between 1940 and 2025 was 29 September 2001, with 177 mm of rain in 24 hours.
What was the windiest day in Ciudad Constitución?
The windiest day measured in Ciudad Constitución between 1940 and 2025 was 23 July 1948, with winds reaching 105.4 km/h.
What is the warmest month in Ciudad Constitución?
The warmest month in Ciudad Constitución is August (28.1 °C on average); the coldest is January (17.7 °C).
How much does it rain in Ciudad Constitución?
Ciudad Constitución receives on average 96 mm of precipitation per year, spread over about 12 rainy days.
Is it sunny in Ciudad Constitución?
Ciudad Constitución gets on average 11.4 hours of sunshine per day, roughly 4,161 hours per year over 1940-2025.
Are there tropical nights in Ciudad Constitución?
Yes: Ciudad Constitución has on average 98 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ciudad Constitución?
In Ciudad Constitución, between 1940 and 2025, the highest apparent temperature reached 47.2 °C on 14 September 2014, and the lowest was -2.1 °C on 5 February 2011.
Compare Ciudad Constitución with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ciudad Constitución