San Miguel de Allende climate — normals and trends
San Miguel de Allende (Mexico) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 17.5 °C and it receives 513 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 (21.0 °C on average) and the coldest is January (13.5 °C). Rainfall peaks in July.
San Miguel de Allende averages 1 frost days, 33 hot days (≥ 30 °C) and 75 rainy days per year.
San Miguel de Allende has warmed by +2.6 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The hottest day of the period reached 37.6 °C (on 24 May 2024) and the coldest -5.3 °C (on 25 February 1976).
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
San Miguel de AllendeGuanajuato
- coords
- 20.92°, -100.74°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.5°C
Average daily high
25.2°C
Average daily low
11.2°C
Annual rainfall
513mm
Sunshine / day
10.9h
Mean relative humidity
59%
Average peak wind
16.1km/h
Seasonal range
7.5°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
33 d/yr
Rainy days (≥ 1 mm)
75 d/yr
Annual snowfall
0.3 cm
Average feels-like high
23.8 °C
Average feels-like low
9.9 °C
Average peak gust
38.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
21.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.80 · 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
37.6 °C
24 May 2024
Coldest day
-5.3 °C
25 February 1976
Wettest day
72 mm
2 August 1955
Windiest day
43.3 km/h
4 March 1983
Strongest gust
99.4 km/h
21 September 1993
Hottest feels-like
37.7 °C
25 May 2011
Coldest feels-like
-9.6 °C
25 February 1976
Snowiest day
16.5 cm
11 January 1967
Sunniest day
13.0 h
28 June 1942
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 | 24.4 °C | +2.8 °C | 8 mm | -6 mm |
| Feb | 27.4 °C | +3.7 °C | 7 mm | -3 mm |
| Mar | 29.5 °C | +3.0 °C | 0 mm | -10 mm |
| Apr | 30.5 °C | +2.0 °C | 1 mm | -18 mm |
| May | 31.7 °C | +2.5 °C | 86 mm | +43 mm |
| Jun | 25.6 °C | -1.5 °C | 236 mm | +141 mm |
| Jul | 25.2 °C | -0.2 °C | 204 mm | +105 mm |
| Aug | 26.9 °C | +1.3 °C | 112 mm | +21 mm |
| Sep | 26.4 °C | +1.9 °C | 105 mm | +24 mm |
| Oct | 26.5 °C | +2.2 °C | 36 mm | +3 mm |
| Nov | 26.3 °C | +2.8 °C | 0 mm | -11 mm |
| Dec | 23.9 °C | +1.9 °C | 8 mm | +1 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 San Miguel de Allende?
San Miguel de Allende has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 17.5 °C and it receives 513 mm of precipitation per year.
What is the hottest day ever recorded in San Miguel de Allende?
The hottest day measured in San Miguel de Allende between 1940 and 2025 was 24 May 2024, reaching 37.6 °C.
What is the coldest day in San Miguel de Allende?
The coldest day measured in San Miguel de Allende between 1940 and 2025 was 25 February 1976, at -5.3 °C.
Does it snow in San Miguel de Allende?
Almost never: San Miguel de Allende sees virtually no snow, with about 1 frost days per year.
Has the climate of San Miguel de Allende warmed?
Yes: San Miguel de Allende warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San Miguel de Allende?
The wettest day measured in San Miguel de Allende between 1940 and 2025 was 2 August 1955, with 72 mm of rain in 24 hours.
What was the windiest day in San Miguel de Allende?
The windiest day measured in San Miguel de Allende between 1940 and 2025 was 4 March 1983, with winds reaching 43.3 km/h.
What is the warmest month in San Miguel de Allende?
The warmest month in San Miguel de Allende is May (21.0 °C on average); the coldest is January (13.5 °C).
How much does it rain in San Miguel de Allende?
San Miguel de Allende receives on average 513 mm of precipitation per year, spread over about 75 rainy days.
Is it sunny in San Miguel de Allende?
San Miguel de Allende gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
What is the biggest single-day snowfall in San Miguel de Allende?
The heaviest 24-hour snowfall measured in San Miguel de Allende between 1940 and 2025 was 11 January 1967, with 16.5 cm.
Are there tropical nights in San Miguel de Allende?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in San Miguel de Allende.
What was the most extreme apparent temperature in San Miguel de Allende?
In San Miguel de Allende, between 1940 and 2025, the highest apparent temperature reached 37.7 °C on 25 May 2011, and the lowest was -9.6 °C on 25 February 1976.
Compare San Miguel de Allende with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Miguel de Allende