Zacatlán climate — normals and trends
Zacatlán (Mexico) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 14.1 °C and it receives 1,988 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 (16.5 °C on average) and the coldest is January (10.7 °C). Rainfall peaks in September.
Zacatlán averages 1 frost days, 0 hot days (≥ 30 °C) and 242 rainy days per year.
Zacatlán has warmed by +2.6 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 2 to 0 per year over the period.
The hottest day of the period reached 31.6 °C (on 16 April 1998) and the coldest -3.9 °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
ZacatlánPuebla
- coords
- 19.94°, -97.96°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.1°C
Average daily high
19.3°C
Average daily low
9.9°C
Annual rainfall
1,988mm
Sunshine / day
10.1h
Mean relative humidity
84%
Average peak wind
10.4km/h
Seasonal range
5.8°C
Frost days (< 0 °C)
1 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
242 d/yr
Annual snowfall
0.9 cm
Average feels-like high
20.1 °C
Average feels-like low
8.8 °C
Average peak gust
33.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
18.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.84 · 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
31.6 °C
16 April 1998
Coldest day
-3.9 °C
25 February 1976
Wettest day
219 mm
21 August 2021
Windiest day
32.7 km/h
21 August 2021
Strongest gust
100.1 km/h
21 August 2021
Hottest feels-like
34.0 °C
8 May 2024
Coldest feels-like
-7.6 °C
25 February 1976
Snowiest day
13.0 cm
11 January 1967
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 | 17.5 °C | +1.3 °C | 52 mm | -19 mm |
| Feb | 19.7 °C | +1.9 °C | 65 mm | -9 mm |
| Mar | 22.6 °C | +2.6 °C | 51 mm | -46 mm |
| Apr | 22.4 °C | +0.8 °C | 46 mm | -92 mm |
| May | 23.9 °C | +1.9 °C | 234 mm | +86 mm |
| Jun | 21.0 °C | 0.0 °C | 526 mm | +265 mm |
| Jul | 21.5 °C | +1.4 °C | 261 mm | -5 mm |
| Aug | 22.2 °C | +1.8 °C | 231 mm | -7 mm |
| Sep | 21.8 °C | +1.9 °C | 284 mm | -16 mm |
| Oct | 20.8 °C | +2.0 °C | 409 mm | +199 mm |
| Nov | 19.6 °C | +2.0 °C | 112 mm | -1 mm |
| Dec | 17.6 °C | +1.0 °C | 149 mm | +76 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 Zacatlán?
Zacatlán has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 14.1 °C and it receives 1,988 mm of precipitation per year.
What is the hottest day ever recorded in Zacatlán?
The hottest day measured in Zacatlán between 1940 and 2025 was 16 April 1998, reaching 31.6 °C.
What is the coldest day in Zacatlán?
The coldest day measured in Zacatlán between 1940 and 2025 was 25 February 1976, at -3.9 °C.
Does it snow in Zacatlán?
Almost never: Zacatlán sees virtually no snow, with about 1 frost days per year.
Has the climate of Zacatlán warmed?
Yes: Zacatlán warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zacatlán?
The wettest day measured in Zacatlán between 1940 and 2025 was 21 August 2021, with 219 mm of rain in 24 hours.
What was the windiest day in Zacatlán?
The windiest day measured in Zacatlán between 1940 and 2025 was 21 August 2021, with winds reaching 32.7 km/h.
What is the warmest month in Zacatlán?
The warmest month in Zacatlán is May (16.5 °C on average); the coldest is January (10.7 °C).
How much does it rain in Zacatlán?
Zacatlán receives on average 1,988 mm of precipitation per year, spread over about 242 rainy days.
Is it sunny in Zacatlán?
Zacatlán gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
What is the biggest single-day snowfall in Zacatlán?
The heaviest 24-hour snowfall measured in Zacatlán between 1940 and 2025 was 11 January 1967, with 13.0 cm.
Are there tropical nights in Zacatlán?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Zacatlán.
What was the most extreme apparent temperature in Zacatlán?
In Zacatlán, between 1940 and 2025, the highest apparent temperature reached 34.0 °C on 8 May 2024, and the lowest was -7.6 °C on 25 February 1976.
Compare Zacatlán with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zacatlán