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Monthly climate in Guantanamo, Cuba

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Guantanamo features a tropical savanna climate (Aw). Temperatures typically range between 24 °C (75 °F) and 28 °C (82 °F) through the year, but rarely can drop to 14 °C (58 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 983 mm (38.7 inches) and receives 152 rainy days on the 1 mm (0.04 inches) threshold annually. Guantanamo enjoys an average of 3869 hours of sunshine throughout the year, and daylight varies from 10 hours 55 minutes to 13 hours 19 minutes per day.

Monthly average temperatures in Guantanamo, Cuba

The warmest months in Guantanamo are June, July and August, with daily mean temperatures ranging from 27 to 28 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 24 to 24 °C (75 - 76 °F) throughout the day. On average each year, Guantanamo experiences 325 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 Guantanamo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum31°C
(87°F)		31°C
(89°F)		32°C
(91°F)		34°C
(94°F)		34°C
(93°F)		34°C
(94°F)		36°C
(97°F)		35°C
(95°F)		35°C
(95°F)		34°C
(94°F)		32°C
(90°F)		31°C
(89°F)
Mean maximum30°C
(87°F)		31°C
(88°F)		31°C
(89°F)		33°C
(91°F)		33°C
(92°F)		33°C
(92°F)		35°C
(95°F)		34°C
(94°F)		34°C
(93°F)		33°C
(91°F)		31°C
(88°F)		31°C
(88°F)
Average high28°C
(83°F)		29°C
(84°F)		29°C
(85°F)		30°C
(87°F)		31°C
(87°F)		32°C
(90°F)		32°C
(90°F)		32°C
(91°F)		32°C
(89°F)		31°C
(88°F)		30°C
(85°F)		29°C
(84°F)
Daily mean24°C
(75°F)		24°C
(76°F)		24°C
(76°F)		26°C
(78°F)		26°C
(79°F)		27°C
(81°F)		28°C
(82°F)		28°C
(82°F)		27°C
(81°F)		26°C
(80°F)		25°C
(78°F)		24°C
(76°F)
Average low20°C
(68°F)		21°C
(69°F)		21°C
(69°F)		22°C
(71°F)		23°C
(73°F)		24°C
(75°F)		24°C
(76°F)		24°C
(76°F)		24°C
(75°F)		23°C
(74°F)		22°C
(72°F)		21°C
(70°F)
Mean minimum17°C
(63°F)		18°C
(64°F)		19°C
(66°F)		19°C
(67°F)		21°C
(70°F)		23°C
(73°F)		23°C
(73°F)		23°C
(74°F)		22°C
(73°F)		22°C
(71°F)		20°C
(68°F)		19°C
(66°F)
Minimum14°C
(58°F)		15°C
(60°F)		16°C
(62°F)		18°C
(65°F)		20°C
(67°F)		22°C
(72°F)		22°C
(72°F)		22°C
(73°F)		22°C
(71°F)		21°C
(71°F)		18°C
(66°F)		17°C
(64°F)

Compare climate in Guantanamo with other places

Compare temperature, precipitation, sunshine, UV index in Guantanamo, Cuba with other places around the world.

Monthly average precipitation in Guantanamo, Cuba

Guantanamo usually has the most precipitation in May, September and October, with an average of 19 rainy days and 149 mm (5.9 inches) of precipitation per month. The driest months in Guantanamo are January, February and December. On average, 24 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Guantanamo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)21 (0.8)15 (0.6)37 (1.4)55 (2.2)203 (8.0)88 (3.4)96 (3.8)97 (3.8)136 (5.4)107 (4.2)94 (3.7)36 (1.4)
Average precipitation days (≥ 1 mm)52711181618152120136

Monthly sunshine hours in Guantanamo, Cuba

The sunniest months in Guantanamo are June, July and August, when the sun shines an average of 11 hours 25 minutes a day. Least sunny months in Guantanamo: January, February and November receive an average of 9 hours 19 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Guantanamo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours244303341343336344362344327318289312
Mean daily daylight hours11h 3m11h 28m12h 2m12h 36m13h 5m13h 19m13h 11m12h 46m12h 13m11h 39m11h 9m10h 55m

Solar UV radiation in Guantanamo, Cuba

Guantanamo experiences the highest level of ultraviolet (UV) radiation in April, August and September, when the maximum UV index can reach values of 13 - 13, 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 Guantanamo UV Index data.

Average daily maximum UV levels by month for Guantanamo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)911121313131313131198