San Miguel el Alto climate — normals and trends
San Miguel el Alto (Mexico) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 18.5 °C and it receives 696 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 (22.7 °C on average) and the coldest is January (14.5 °C). Rainfall peaks in July.
San Miguel el Alto averages 0 frost days, 34 hot days (≥ 30 °C) and 89 rainy days per year.
San Miguel el Alto has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.1 °C (on 13 June 2023) and the coldest -2.8 °C (on 27 January 1980).
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 el AltoJalisco
- coords
- 21.03°, -102.40°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.5°C
Average daily high
25.1°C
Average daily low
12.3°C
Annual rainfall
696mm
Sunshine / day
11.1h
Mean relative humidity
53%
Average peak wind
15.8km/h
Seasonal range
8.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
34 d/yr
Rainy days (≥ 1 mm)
89 d/yr
Annual snowfall
0.1 cm
Average feels-like high
24.1 °C
Average feels-like low
10.8 °C
Average peak gust
33.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
22.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.65 · 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
36.1 °C
13 June 2023
Coldest day
-2.8 °C
27 January 1980
Wettest day
56 mm
1 January 1947
Windiest day
45.1 km/h
4 March 1983
Strongest gust
86.4 km/h
4 March 1983
Hottest feels-like
36.5 °C
9 June 1989
Coldest feels-like
-8.3 °C
13 February 1960
Snowiest day
2.4 cm
1 January 1947
Sunniest day
13.1 h
27 June 1967
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 | 23.4 °C | +1.9 °C | 6 mm | -11 mm |
| Feb | 26.9 °C | +3.4 °C | 3 mm | -7 mm |
| Mar | 28.7 °C | +2.4 °C | 0 mm | -6 mm |
| Apr | 30.0 °C | +1.5 °C | 0 mm | -8 mm |
| May | 31.3 °C | +1.5 °C | 17 mm | -9 mm |
| Jun | 26.8 °C | -0.9 °C | 209 mm | +87 mm |
| Jul | 25.2 °C | +0.2 °C | 208 mm | +38 mm |
| Aug | 25.9 °C | +0.9 °C | 195 mm | +44 mm |
| Sep | 26.0 °C | +1.5 °C | 180 mm | +60 mm |
| Oct | 26.4 °C | +2.0 °C | 46 mm | -1 mm |
| Nov | 26.0 °C | +2.4 °C | 2 mm | -9 mm |
| Dec | 23.8 °C | +2.0 °C | 11 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 el Alto?
San Miguel el Alto has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 18.5 °C and it receives 696 mm of precipitation per year.
What is the hottest day ever recorded in San Miguel el Alto?
The hottest day measured in San Miguel el Alto between 1940 and 2025 was 13 June 2023, reaching 36.1 °C.
What is the coldest day in San Miguel el Alto?
The coldest day measured in San Miguel el Alto between 1940 and 2025 was 27 January 1980, at -2.8 °C.
Does it snow in San Miguel el Alto?
Almost never: San Miguel el Alto sees virtually no snow, with about 0 frost days per year.
Has the climate of San Miguel el Alto warmed?
Yes: San Miguel el Alto warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San Miguel el Alto?
The wettest day measured in San Miguel el Alto between 1940 and 2025 was 1 January 1947, with 56 mm of rain in 24 hours.
What was the windiest day in San Miguel el Alto?
The windiest day measured in San Miguel el Alto between 1940 and 2025 was 4 March 1983, with winds reaching 45.1 km/h.
What is the warmest month in San Miguel el Alto?
The warmest month in San Miguel el Alto is May (22.7 °C on average); the coldest is January (14.5 °C).
How much does it rain in San Miguel el Alto?
San Miguel el Alto receives on average 696 mm of precipitation per year, spread over about 89 rainy days.
Is it sunny in San Miguel el Alto?
San Miguel el Alto gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
What is the biggest single-day snowfall in San Miguel el Alto?
The heaviest 24-hour snowfall measured in San Miguel el Alto between 1940 and 2025 was 1 January 1947, with 2.4 cm.
Are there tropical nights in San Miguel el Alto?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in San Miguel el Alto.
What was the most extreme apparent temperature in San Miguel el Alto?
In San Miguel el Alto, between 1940 and 2025, the highest apparent temperature reached 36.5 °C on 9 June 1989, and the lowest was -8.3 °C on 13 February 1960.
Compare San Miguel el Alto with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Miguel el Alto