Chetumal climate
Chetumal (Quintana Roo, Mexico) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C80 °F, and about 1,392 mm55 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Chetumal climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2781 | 2271 | 2476 | 682.7 |
| Feb | 2883 | 2272 | 2578 | 401.6 |
| Mar | 2985 | 2374 | 2679 | 381.5 |
| Apr | 3187 | 2576 | 2882 | 391.5 |
| May | 3188 | 2678 | 2883 | 1305.1 |
| Jun | 3086 | 2679 | 2882 | 2017.9 |
| Jul | 3086 | 2679 | 2882 | 1204.7 |
| Aug | 3087 | 2679 | 2883 | 1546.1 |
| Sep | 3086 | 2679 | 2882 | 1726.8 |
| Oct | 2984 | 2577 | 2780 | 2218.7 |
| Nov | 2882 | 2373 | 2578 | 1275.0 |
| Dec | 2781 | 2272 | 2577 | 813.2 |
| Year | 3188 | 2271 | 2780 | 1,39255 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 78% | 52% | 4.1 | 11:08 |
| Feb | 74% | 48% | 4.9 | 11:31 |
| Mar | 71% | 39% | 5.7 | 11:59 |
| Apr | 70% | 40% | 6.1 | 12:33 |
| May | 74% | 54% | 5.8 | 12:00 |
| Jun | 81% | 68% | 5.2 | 13:14 |
| Jul | 81% | 58% | 5.5 | 13:08 |
| Aug | 80% | 57% | 5.5 | 12:45 |
| Sep | 83% | 62% | 5.1 | 12:13 |
| Oct | 85% | 57% | 4.7 | 11:41 |
| Nov | 82% | 46% | 4.3 | 11:14 |
| Dec | 80% | 46% | 3.9 | 11:01 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Chetumal is like
The warmest month is May, with an average high of 31 °C88 °F and a low of 26 °C78 °F. The coldest is January, when highs average 27 °C81 °F and lows 22 °C71 °F. Seasonal differences are small — just 4 °C7.3 °F between the warmest and the coolest month.
It is wet, with about 1,392 mm55 in of precipitation per year. The wettest three-month stretch is August–October, which brings 39% of the annual total. The wettest month is October (221 mm8.7 in), the driest is March (38 mm1.5 in).
Relative humidity ranges from 70% in April to 85% in October. The clearest skies (lowest average cloud amount, 39%) are typical of March. Average wind speed near the ground ranges from 6 km/h (4 mph) in September to 8 km/h (5 mph) in March. Daylight lasts from about 11.0 hours in December to 13.2 hours in June.
Best time to visit Chetumal
Based on these averages, the most comfortable months for sightseeing and outdoor activities are January–March: average highs of 27 °C81 °F to 29 °C85 °F with 38 mm1.5 in to 68 mm2.7 in of precipitation per month.
The most challenging month is October, which is very wet (221 mm8.7 in) and humid (85% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Chetumal
- Wetter months (May–November) — highs 2882 to 31 °C88 °F, lows 2373 to 26 °C79 °F, about 161 mm6.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Drier months (December–April) — highs 2781 to 31 °C87 °F, lows 2271 to 25 °C76 °F, about 53 mm2.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Chetumal compares
Compared with Campeche, about 275 km to the northwest, Chetumal has practically the same average temperature and receives 40% more precipitation (1,392 mm55 in vs 996 mm39 in). The difference is largest in January (0.8 °C1.4 °F warmer).
Of the 96 places in Mexico covered by World Climates, Chetumal is the 11th warmest by annual mean temperature and the 14th wettest by annual precipitation. See all of them on the Mexico climate page.
Places in other countries with the most similar temperature and rainfall pattern: Choloma (Honduras, Am), Puerto Barrios (Guatemala, Am) and San Pedro Sula (Honduras, Am).
Nearby places
- Belmopan 149 km · 26 °C78 °F · 1,644 mm65 in
- Cozumel 262 km · 27 °C80 °F · 1,282 mm50 in
- Playa del Carmen 267 km · 27 °C80 °F · 1,282 mm50 in
- Campeche 275 km · 27 °C80 °F · 996 mm39 in
- Puerto Cortez 302 km · 27 °C80 °F · 1,783 mm70 in
- Mérida 305 km · 27 °C80 °F · 1,045 mm41 in
- Puerto Barrios 312 km · 26 °C80 °F · 1,739 mm68 in
- Choloma 325 km · 26 °C80 °F · 1,547 mm61 in
Frequently asked questions
What is the warmest month in Chetumal?
May is the warmest month in Chetumal, with an average high of 31 °C (88 °F) and an average low of 26 °C (78 °F).
What is the coldest month in Chetumal?
January is the coldest month, with an average high of 27 °C (81 °F) and an average low of 22 °C (71 °F).
When does it rain the most in Chetumal?
October is the wettest month with about 221 mm (8.7 in) of precipitation; March is the driest with about 38 mm (1.5 in).
What is the best time to visit Chetumal?
Judging by long-term averages, the most comfortable months are January–March.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.