Climate averages 1991–2020
Chetumal weather
in May.
A hot, wet month: the warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Chetumal: daytime highs average 31.6°C and nights cool to about 24.8°C. By daytime temperature it is the warmest month of the year.
Expect about 93 mm of rain on roughly 15 days, which makes May a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 00 min on an average May day.
The nearest other city in this atlas is Belmopan (149 km away). In May its highs average 32.0°C, about as warm as Chetumal, with 95 mm of rain.
Among the 153 cities listed in Mexico, Chetumal ranks joint 51st of 153 for the warmest May highs and 131st of 153 for the driest May (rainfall, lowest first). The mean May high of those 153 cities is 29.6°C; Chetumal is 2.0°C warmer than that mean.
From May to June, average highs fall by 1.2°C to 30.4°C, and monthly rainfall rises from 93 mm to 193 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Chetumal climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.9°C20.8°C | 20.8°C | 52 | 12.3 | 11.111 h |
| February | 28.2°C21.6°C | 21.6°C | 24 | 7.2 | 11.512 h |
| March | 29.7°C22.4°C | 22.4°C | 26 | 6.8 | 12.012 h |
| April | 31.3°C24.0°C | 24.0°C | 32 | 7.4 | 12.613 h |
| May, selected | 31.6°C24.8°C | 24.8°C | 93 | 15.3 | 13.013 h |
| June | 30.4°C25.0°C | 25.0°C | 193 | 21.5 | 13.213 h |
| July | 30.8°C24.9°C | 24.9°C | 120 | 20.9 | 13.113 h |
| August | 31.1°C24.9°C | 24.9°C | 158 | 23.2 | 12.813 h |
| September | 30.6°C24.6°C | 24.6°C | 186 | 25.2 | 12.312 h |
| October | 29.2°C23.5°C | 23.5°C | 190 | 21.8 | 11.712 h |
| November | 27.8°C22.0°C | 22.0°C | 96 | 14.8 | 11.311 h |
| December | 27.1°C21.2°C | 21.2°C | 55 | 13.3 | 11.011 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Belmopan in MayBelize · 149 kmHigh 32.0°C · Low 23.8°C · 95 mm rain
- Cozumel in MayMexico · 262 kmHigh 28.1°C · Low 26.1°C · 84 mm rain
- Playa del Carmen in MayMexico · 267 kmHigh 29.3°C · Low 25.1°C · 82 mm rain
- Campeche in MayMexico · 275 kmHigh 35.3°C · Low 25.4°C · 50 mm rain
- Kanasín in MayMexico · 299 kmHigh 36.1°C · Low 24.4°C · 51 mm rain
- Puerto Cortez in MayHonduras · 302 kmHigh 30.1°C · Low 24.7°C · 142 mm rain
- Mérida in MayMexico · 305 kmHigh 35.7°C · Low 24.3°C · 51 mm rain
- Puerto Barrios in MayGuatemala · 312 kmHigh 30.1°C · Low 24.3°C · 171 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Chetumal) is explained once on the Chetumal year overview and on the Sources, method and limits page.