Chetumal climate — normals and trends
Chetumal (Mexico) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.1 °C and it receives 1,366 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 (27.6 °C on average) and the coldest is January (23.7 °C). Rainfall peaks in June.
Chetumal averages 0 frost days, 129 hot days (≥ 30 °C) and 215 rainy days per year.
Chetumal has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.0 °C (on 1 May 1988) and the coldest 12.5 °C (on 25 December 1989).
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
ChetumalQuintana Roo
- coords
- 18.52°, -88.30°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.1°C
Average daily high
29.0°C
Average daily low
23.7°C
Annual rainfall
1,366mm
Sunshine / day
10.6h
Mean relative humidity
82%
Average peak wind
17.6km/h
Seasonal range
3.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
129 d/yr
Rainy days (≥ 1 mm)
215 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.1 °C
Average feels-like low
26.8 °C
Average peak gust
35.4 km/h
Tropical nights (≥ 20 °C)
341 d/yr
Solar radiation
18.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.78 · 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
36.0 °C
1 May 1988
Coldest day
12.5 °C
25 December 1989
Wettest day
203 mm
2 October 2000
Windiest day
64.5 km/h
21 August 2007
Strongest gust
121.0 km/h
21 August 2007
Hottest feels-like
43.0 °C
9 June 2023
Coldest feels-like
10.3 °C
25 December 1989
Sunniest day
12.8 h
18 June 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 | 27.3 °C | +0.7 °C | 72 mm | +11 mm |
| Feb | 28.6 °C | +1.1 °C | 51 mm | +16 mm |
| Mar | 30.1 °C | +1.3 °C | 17 mm | -15 mm |
| Apr | 30.2 °C | +0.2 °C | 47 mm | +12 mm |
| May | 31.7 °C | +1.1 °C | 76 mm | -22 mm |
| Jun | 30.5 °C | +0.4 °C | 248 mm | +39 mm |
| Jul | 31.2 °C | +1.2 °C | 111 mm | -61 mm |
| Aug | 31.9 °C | +1.5 °C | 125 mm | -36 mm |
| Sep | 31.3 °C | +1.2 °C | 172 mm | -37 mm |
| Oct | 30.9 °C | +1.7 °C | 186 mm | +7 mm |
| Nov | 28.7 °C | +0.8 °C | 90 mm | -12 mm |
| Dec | 28.2 °C | +1.3 °C | 124 mm | +51 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 Chetumal?
Chetumal has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.1 °C and it receives 1,366 mm of precipitation per year.
What is the hottest day ever recorded in Chetumal?
The hottest day measured in Chetumal between 1940 and 2025 was 1 May 1988, reaching 36.0 °C.
What is the coldest day in Chetumal?
The coldest day measured in Chetumal between 1940 and 2025 was 25 December 1989, at 12.5 °C.
Does it snow in Chetumal?
Almost never: Chetumal sees virtually no snow, with about 0 frost days per year.
Has the climate of Chetumal warmed?
Yes: Chetumal warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chetumal?
The wettest day measured in Chetumal between 1940 and 2025 was 2 October 2000, with 203 mm of rain in 24 hours.
What was the windiest day in Chetumal?
The windiest day measured in Chetumal between 1940 and 2025 was 21 August 2007, with winds reaching 64.5 km/h.
What is the warmest month in Chetumal?
The warmest month in Chetumal is May (27.6 °C on average); the coldest is January (23.7 °C).
How much does it rain in Chetumal?
Chetumal receives on average 1,366 mm of precipitation per year, spread over about 215 rainy days.
Is it sunny in Chetumal?
Chetumal gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
Are there tropical nights in Chetumal?
Yes: Chetumal has on average 341 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chetumal?
In Chetumal, between 1940 and 2025, the highest apparent temperature reached 43.0 °C on 9 June 2023, and the lowest was 10.3 °C on 25 December 1989.
Compare Chetumal with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chetumal