San Juan de los Lagos climate — normals and trends
San Juan de los Lagos (Mexico) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 19.3 °C and it receives 579 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 (23.6 °C on average) and the coldest is January (14.9 °C). Rainfall peaks in July.
San Juan de los Lagos averages 0 frost days, 57 hot days (≥ 30 °C) and 82 rainy days per year.
San Juan de los Lagos 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 37.7 °C (on 13 June 2023) and the coldest -3.2 °C (on 18 January 2006).
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 Juan de los LagosJalisco
- coords
- 21.25°, -102.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.3°C
Average daily high
26.3°C
Average daily low
12.7°C
Annual rainfall
579mm
Sunshine / day
11.1h
Mean relative humidity
50%
Average peak wind
17.5km/h
Seasonal range
8.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
57 d/yr
Rainy days (≥ 1 mm)
82 d/yr
Annual snowfall
0.0 cm
Average feels-like high
24.9 °C
Average feels-like low
11.3 °C
Average peak gust
33.0 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
22.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.62 · 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
37.7 °C
13 June 2023
Coldest day
-3.2 °C
18 January 2006
Wettest day
91 mm
13 June 2018
Windiest day
52.2 km/h
4 March 1983
Strongest gust
87.1 km/h
4 March 1983
Hottest feels-like
37.4 °C
9 June 1989
Coldest feels-like
-8.1 °C
14 December 1997
Sunniest day
13.1 h
29 June 1950
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 | +2.3 °C | 4 mm | -12 mm |
| Feb | 28.0 °C | +3.6 °C | 0 mm | -8 mm |
| Mar | 29.9 °C | +2.7 °C | 0 mm | -5 mm |
| Apr | 31.1 °C | +1.6 °C | 0 mm | -7 mm |
| May | 32.4 °C | +1.6 °C | 23 mm | +1 mm |
| Jun | 27.6 °C | -1.3 °C | 194 mm | +88 mm |
| Jul | 26.1 °C | -0.2 °C | 161 mm | +22 mm |
| Aug | 27.1 °C | +0.7 °C | 192 mm | +63 mm |
| Sep | 26.9 °C | +1.1 °C | 166 mm | +70 mm |
| Oct | 28.0 °C | +2.1 °C | 36 mm | -1 mm |
| Nov | 27.4 °C | +2.6 °C | 1 mm | -7 mm |
| Dec | 25.0 °C | +2.2 °C | 6 mm | -3 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 Juan de los Lagos?
San Juan de los Lagos has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 19.3 °C and it receives 579 mm of precipitation per year.
What is the hottest day ever recorded in San Juan de los Lagos?
The hottest day measured in San Juan de los Lagos between 1940 and 2025 was 13 June 2023, reaching 37.7 °C.
What is the coldest day in San Juan de los Lagos?
The coldest day measured in San Juan de los Lagos between 1940 and 2025 was 18 January 2006, at -3.2 °C.
Does it snow in San Juan de los Lagos?
Almost never: San Juan de los Lagos sees virtually no snow, with about 0 frost days per year.
Has the climate of San Juan de los Lagos warmed?
Yes: San Juan de los Lagos warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in San Juan de los Lagos?
The wettest day measured in San Juan de los Lagos between 1940 and 2025 was 13 June 2018, with 91 mm of rain in 24 hours.
What was the windiest day in San Juan de los Lagos?
The windiest day measured in San Juan de los Lagos between 1940 and 2025 was 4 March 1983, with winds reaching 52.2 km/h.
What is the warmest month in San Juan de los Lagos?
The warmest month in San Juan de los Lagos is May (23.6 °C on average); the coldest is January (14.9 °C).
How much does it rain in San Juan de los Lagos?
San Juan de los Lagos receives on average 579 mm of precipitation per year, spread over about 82 rainy days.
Is it sunny in San Juan de los Lagos?
San Juan de los Lagos gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
Are there tropical nights in San Juan de los Lagos?
Yes: San Juan de los Lagos has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in San Juan de los Lagos?
In San Juan de los Lagos, between 1940 and 2025, the highest apparent temperature reached 37.4 °C on 9 June 1989, and the lowest was -8.1 °C on 14 December 1997.
Compare San Juan de los Lagos with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around San Juan de los Lagos