Tamuín climate — normals and trends
Tamuín (Mexico) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.7 °C and it receives 1,027 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 May (28.5 °C on average) and the coldest is January (19.1 °C). Rainfall peaks in September.
Tamuín averages 0 frost days, 205 hot days (≥ 30 °C) and 145 rainy days per year.
Tamuín has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The hottest day of the period reached 49.6 °C (on 9 May 2024) and the coldest 1.0 °C (on 24 December 1989).
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
TamuínSan Luis Potosí
- coords
- 22.01°, -98.78°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.7°C
Average daily high
30.1°C
Average daily low
20.4°C
Annual rainfall
1,027mm
Sunshine / day
9.7h
Mean relative humidity
74%
Average peak wind
12.6km/h
Seasonal range
9.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
205 d/yr
Rainy days (≥ 1 mm)
145 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.5 °C
Average feels-like low
22.9 °C
Average peak gust
26.9 km/h
Tropical nights (≥ 20 °C)
220 d/yr
Solar radiation
17.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.52 · 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
49.6 °C
9 May 2024
Coldest day
1.0 °C
24 December 1989
Wettest day
145 mm
23 September 1967
Windiest day
42.0 km/h
28 February 1954
Strongest gust
96.5 km/h
22 August 1951
Hottest feels-like
54.1 °C
9 May 2024
Coldest feels-like
-3.4 °C
11 January 1962
Sunniest day
13.0 h
14 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 | 24.1 °C | -0.2 °C | 16 mm | -17 mm |
| Feb | 29.6 °C | +3.0 °C | 11 mm | -18 mm |
| Mar | 35.7 °C | +5.5 °C | 7 mm | -26 mm |
| Apr | 36.3 °C | +3.0 °C | 20 mm | -29 mm |
| May | 38.1 °C | +3.5 °C | 89 mm | +7 mm |
| Jun | 33.2 °C | -0.7 °C | 389 mm | +231 mm |
| Jul | 32.6 °C | +0.1 °C | 133 mm | -19 mm |
| Aug | 35.1 °C | +1.9 °C | 97 mm | -37 mm |
| Sep | 33.6 °C | +2.0 °C | 202 mm | +17 mm |
| Oct | 31.3 °C | +1.9 °C | 119 mm | +21 mm |
| Nov | 30.1 °C | +3.2 °C | 30 mm | -15 mm |
| Dec | 27.4 °C | +2.5 °C | 57 mm | +26 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 Tamuín?
Tamuín has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.7 °C and it receives 1,027 mm of precipitation per year.
What is the hottest day ever recorded in Tamuín?
The hottest day measured in Tamuín between 1940 and 2025 was 9 May 2024, reaching 49.6 °C.
What is the coldest day in Tamuín?
The coldest day measured in Tamuín between 1940 and 2025 was 24 December 1989, at 1.0 °C.
Does it snow in Tamuín?
Almost never: Tamuín sees virtually no snow, with about 0 frost days per year.
Has the climate of Tamuín warmed?
Yes: Tamuín warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tamuín?
The wettest day measured in Tamuín between 1940 and 2025 was 23 September 1967, with 145 mm of rain in 24 hours.
What was the windiest day in Tamuín?
The windiest day measured in Tamuín between 1940 and 2025 was 28 February 1954, with winds reaching 42.0 km/h.
What is the warmest month in Tamuín?
The warmest month in Tamuín is May (28.5 °C on average); the coldest is January (19.1 °C).
How much does it rain in Tamuín?
Tamuín receives on average 1,027 mm of precipitation per year, spread over about 145 rainy days.
Is it sunny in Tamuín?
Tamuín gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
Are there tropical nights in Tamuín?
Yes: Tamuín has on average 220 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tamuín?
In Tamuín, between 1940 and 2025, the highest apparent temperature reached 54.1 °C on 9 May 2024, and the lowest was -3.4 °C on 11 January 1962.
Compare Tamuín with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tamuín