Tonalá climate — normals and trends
Tonalá (Mexico) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.4 °C and it receives 1,537 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 April (26.6 °C on average) and the coldest is January (23.9 °C). Rainfall peaks in September.
Tonalá averages 0 frost days, 159 hot days (≥ 30 °C) and 163 rainy days per year.
Tonalá has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.8 °C (on 16 May 1998) and the coldest 13.3 °C (on 26 December 1963).
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
TonaláChiapas
- coords
- 16.09°, -93.75°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.4°C
Average daily high
29.6°C
Average daily low
22.3°C
Annual rainfall
1,537mm
Sunshine / day
10.8h
Mean relative humidity
74%
Average peak wind
13.2km/h
Seasonal range
2.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
159 d/yr
Rainy days (≥ 1 mm)
163 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.7 °C
Average feels-like low
24.7 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
320 d/yr
Solar radiation
20.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.82 · 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
35.8 °C
16 May 1998
Coldest day
13.3 °C
26 December 1963
Wettest day
230 mm
31 May 1986
Windiest day
44.0 km/h
21 March 1986
Strongest gust
109.4 km/h
2 January 2008
Hottest feels-like
41.9 °C
11 July 2023
Coldest feels-like
9.9 °C
24 December 1989
Sunniest day
12.8 h
23 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 31.0 °C | +2.0 °C | 2 mm | -1 mm |
| Feb | 32.1 °C | +2.4 °C | 13 mm | +10 mm |
| Mar | 32.0 °C | +1.4 °C | 2 mm | -6 mm |
| Apr | 32.3 °C | +1.0 °C | 27 mm | +1 mm |
| May | 32.0 °C | +1.4 °C | 79 mm | -54 mm |
| Jun | 29.9 °C | +0.9 °C | 310 mm | -4 mm |
| Jul | 31.5 °C | +1.9 °C | 161 mm | -89 mm |
| Aug | 30.7 °C | +1.3 °C | 263 mm | -13 mm |
| Sep | 29.9 °C | +1.3 °C | 412 mm | +70 mm |
| Oct | 30.2 °C | +1.3 °C | 249 mm | +98 mm |
| Nov | 30.8 °C | +1.6 °C | 6 mm | -22 mm |
| Dec | 31.1 °C | +1.9 °C | 9 mm | +6 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 Tonalá?
Tonalá has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.4 °C and it receives 1,537 mm of precipitation per year.
What is the hottest day ever recorded in Tonalá?
The hottest day measured in Tonalá between 1940 and 2025 was 16 May 1998, reaching 35.8 °C.
What is the coldest day in Tonalá?
The coldest day measured in Tonalá between 1940 and 2025 was 26 December 1963, at 13.3 °C.
Does it snow in Tonalá?
Almost never: Tonalá sees virtually no snow, with about 0 frost days per year.
Has the climate of Tonalá warmed?
Yes: Tonalá warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tonalá?
The wettest day measured in Tonalá between 1940 and 2025 was 31 May 1986, with 230 mm of rain in 24 hours.
What was the windiest day in Tonalá?
The windiest day measured in Tonalá between 1940 and 2025 was 21 March 1986, with winds reaching 44.0 km/h.
What is the warmest month in Tonalá?
The warmest month in Tonalá is April (26.6 °C on average); the coldest is January (23.9 °C).
How much does it rain in Tonalá?
Tonalá receives on average 1,537 mm of precipitation per year, spread over about 163 rainy days.
Is it sunny in Tonalá?
Tonalá gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
Are there tropical nights in Tonalá?
Yes: Tonalá has on average 320 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tonalá?
In Tonalá, between 1940 and 2025, the highest apparent temperature reached 41.9 °C on 11 July 2023, and the lowest was 9.9 °C on 24 December 1989.
Compare Tonalá with another city
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Nearby cities
The climate around Tonalá