Ocotlán climate — normals and trends
Ocotlán (Mexico) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 20.0 °C and it receives 465 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 (23.5 °C on average) and the coldest is January (16.3 °C). Rainfall peaks in July.
Ocotlán averages 0 frost days, 53 hot days (≥ 30 °C) and 94 rainy days per year.
Ocotlán has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.7 °C (on 13 June 2023) and the coldest 1.7 °C (on 14 December 1997).
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
OcotlánJalisco
- coords
- 20.35°, -102.77°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
20.0°C
Average daily high
26.6°C
Average daily low
14.3°C
Annual rainfall
465mm
Sunshine / day
10.8h
Mean relative humidity
60%
Average peak wind
10.6km/h
Seasonal range
7.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
53 d/yr
Rainy days (≥ 1 mm)
94 d/yr
Annual snowfall
0.0 cm
Average feels-like high
26.6 °C
Average feels-like low
14.2 °C
Average peak gust
28.2 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
21.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.79 · 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
36.7 °C
13 June 2023
Coldest day
1.7 °C
14 December 1997
Wettest day
99 mm
22 June 1993
Windiest day
30.3 km/h
7 January 1946
Strongest gust
71.3 km/h
7 January 1946
Hottest feels-like
37.8 °C
27 May 2024
Coldest feels-like
-2.6 °C
14 December 1997
Snowiest day
1.4 cm
1 January 1947
Sunniest day
13.0 h
23 June 1979
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 | 25.1 °C | +1.9 °C | 6 mm | -11 mm |
| Feb | 28.1 °C | +3.0 °C | 4 mm | -5 mm |
| Mar | 30.3 °C | +2.6 °C | 1 mm | -5 mm |
| Apr | 31.3 °C | +1.6 °C | 0 mm | -5 mm |
| May | 32.1 °C | +1.5 °C | 13 mm | -7 mm |
| Jun | 28.5 °C | -0.1 °C | 138 mm | +51 mm |
| Jul | 27.4 °C | +1.1 °C | 91 mm | -10 mm |
| Aug | 28.0 °C | +1.5 °C | 134 mm | +47 mm |
| Sep | 28.0 °C | +1.9 °C | 111 mm | +31 mm |
| Oct | 28.5 °C | +2.4 °C | 41 mm | +6 mm |
| Nov | 28.0 °C | +2.7 °C | 0 mm | -10 mm |
| Dec | 25.4 °C | +1.8 °C | 19 mm | +10 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 Ocotlán?
Ocotlán has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 20.0 °C and it receives 465 mm of precipitation per year.
What is the hottest day ever recorded in Ocotlán?
The hottest day measured in Ocotlán between 1940 and 2025 was 13 June 2023, reaching 36.7 °C.
What is the coldest day in Ocotlán?
The coldest day measured in Ocotlán between 1940 and 2025 was 14 December 1997, at 1.7 °C.
Does it snow in Ocotlán?
Almost never: Ocotlán sees virtually no snow, with about 0 frost days per year.
Has the climate of Ocotlán warmed?
Yes: Ocotlán warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ocotlán?
The wettest day measured in Ocotlán between 1940 and 2025 was 22 June 1993, with 99 mm of rain in 24 hours.
What was the windiest day in Ocotlán?
The windiest day measured in Ocotlán between 1940 and 2025 was 7 January 1946, with winds reaching 30.3 km/h.
What is the warmest month in Ocotlán?
The warmest month in Ocotlán is May (23.5 °C on average); the coldest is January (16.3 °C).
How much does it rain in Ocotlán?
Ocotlán receives on average 465 mm of precipitation per year, spread over about 94 rainy days.
Is it sunny in Ocotlán?
Ocotlán gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ocotlán?
The heaviest 24-hour snowfall measured in Ocotlán between 1940 and 2025 was 1 January 1947, with 1.4 cm.
Are there tropical nights in Ocotlán?
Yes: Ocotlán has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ocotlán?
In Ocotlán, between 1940 and 2025, the highest apparent temperature reached 37.8 °C on 27 May 2024, and the lowest was -2.6 °C on 14 December 1997.
Compare Ocotlán with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ocotlán