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Monthly climate in Chetumal, Mexico

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Chetumal features a tropical savanna climate (Aw). Temperatures typically range between 24 °C (76 °F) and 29 °C (84 °F) through the year, but rarely can drop to 14 °C (57 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 1271 mm (50.0 inches) and receives 210 rainy days on the 1 mm (0.04 inches) threshold annually. Chetumal enjoys an average of 3546 hours of sunshine throughout the year, and daylight varies from 11 hours 1 minutes to 13 hours 12 minutes per day.

Monthly average temperatures in Chetumal, Mexico

The warmest months in Chetumal are May, July and August, with daily mean temperatures ranging from 28 to 29 °C (83 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 24 to 26 °C (76 - 78 °F) throughout the day. On average each year, Chetumal experiences 326 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Chetumal. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum32°C
(89°F)		33°C
(91°F)		32°C
(89°F)		33°C
(92°F)		33°C
(92°F)		35°C
(95°F)		33°C
(92°F)		34°C
(94°F)		34°C
(93°F)		33°C
(92°F)		32°C
(89°F)		31°C
(88°F)
Mean maximum30°C
(87°F)		31°C
(88°F)		31°C
(88°F)		32°C
(91°F)		33°C
(91°F)		32°C
(90°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		33°C
(91°F)		31°C
(88°F)		30°C
(87°F)
Average high28°C
(82°F)		29°C
(84°F)		30°C
(85°F)		31°C
(88°F)		31°C
(89°F)		31°C
(88°F)		31°C
(89°F)		32°C
(89°F)		32°C
(89°F)		30°C
(87°F)		29°C
(84°F)		28°C
(83°F)
Daily mean24°C
(76°F)		26°C
(78°F)		26°C
(80°F)		28°C
(82°F)		28°C
(83°F)		28°C
(83°F)		29°C
(84°F)		29°C
(84°F)		28°C
(83°F)		27°C
(81°F)		26°C
(78°F)		25°C
(77°F)
Average low22°C
(71°F)		23°C
(74°F)		23°C
(74°F)		25°C
(77°F)		26°C
(79°F)		26°C
(80°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		25°C
(77°F)		23°C
(74°F)		22°C
(72°F)
Mean minimum17°C
(63°F)		18°C
(65°F)		20°C
(68°F)		21°C
(71°F)		24°C
(75°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		22°C
(73°F)		19°C
(67°F)		17°C
(62°F)
Minimum16°C
(61°F)		14°C
(57°F)		19°C
(66°F)		20°C
(67°F)		22°C
(71°F)		24°C
(75°F)		24°C
(76°F)		24°C
(75°F)		24°C
(75°F)		20°C
(68°F)		18°C
(64°F)		16°C
(60°F)

Compare climate in Chetumal with other places

Compare temperature, precipitation, sunshine, UV index in Chetumal, Mexico with other places around the world.

Monthly average precipitation in Chetumal, Mexico

Chetumal usually has the most precipitation in June, September and October, with an average of 24 rainy days and 210 mm (8.3 inches) of precipitation per month. The driest months in Chetumal are February, March and April. On average, 31 mm (1.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Chetumal. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)57 (2.2)29 (1.2)28 (1.1)35 (1.4)83 (3.3)249 (9.8)105 (4.1)143 (5.6)168 (6.6)213 (8.4)108 (4.3)51 (2.0)
Average precipitation days (≥ 1 mm)1112982023212225261716

Monthly sunshine hours in Chetumal, Mexico

The sunniest months in Chetumal are May, July and August, when the sun shines an average of 10 hours 28 minutes a day. Least sunny months in Chetumal: January, June and November receive an average of 8 hours 36 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Chetumal. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours229278316318331274319322296282278295
Mean daily daylight hours11h 8m11h 32m12h 2m12h 33m13h 0m13h 12m13h 5m12h 42m12h 12m11h 41m11h 14m11h 1m

Solar UV radiation in Chetumal, Mexico

Chetumal experiences the highest level of ultraviolet (UV) radiation in April, August and September, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 9. For more detailed information, check out our hourly Chetumal UV Index data.

Average daily maximum UV levels by month for Chetumal. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)911131413131313131298