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Monthly climate in Costa Rica, Brazil

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Costa Rica features a humid subtropical climate (Cfa). Temperatures typically range between 18 °C (64 °F) and 26 °C (79 °F) through the year, but rarely can drop to 0 °C (32 °F) or can rise to as high as 40 °C (104 °F). The average annual precipitation amounts to about 1352 mm (53.2 inches) and receives 119 rainy days on the 1 mm (0.04 inches) threshold annually. Costa Rica enjoys an average of 3459 hours of sunshine throughout the year, and daylight varies from 10 hours 42 minutes to 13 hours 32 minutes per day.

Monthly average temperatures in Costa Rica, Brazil

The warmest months in Costa Rica are January, February and December, with daily mean temperatures ranging from 25 to 26 °C (78 - 79 °F) throughout the day. The coldest temperatures usually occur in June, July and August, when daily mean temperatures range from 18 to 20 °C (64 - 68 °F) throughout the day. On average each year, Costa Rica experiences 266 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 Costa Rica. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum37°C
(99°F)		37°C
(98°F)		36°C
(97°F)		33°C
(93°F)		33°C
(92°F)		32°C
(89°F)		33°C
(91°F)		37°C
(98°F)		39°C
(102°F)		40°C
(104°F)		37°C
(98°F)		37°C
(99°F)
Mean maximum35°C
(95°F)		35°C
(95°F)		35°C
(96°F)		33°C
(91°F)		32°C
(89°F)		28°C
(83°F)		31°C
(88°F)		35°C
(95°F)		38°C
(100°F)		37°C
(99°F)		36°C
(97°F)		36°C
(96°F)
Average high31°C
(88°F)		31°C
(88°F)		31°C
(87°F)		28°C
(83°F)		25°C
(78°F)		24°C
(75°F)		25°C
(77°F)		26°C
(79°F)		31°C
(87°F)		30°C
(86°F)		30°C
(87°F)		31°C
(88°F)
Daily mean26°C
(79°F)		25°C
(78°F)		25°C
(77°F)		23°C
(73°F)		20°C
(68°F)		18°C
(65°F)		18°C
(64°F)		20°C
(68°F)		24°C
(75°F)		24°C
(76°F)		25°C
(77°F)		26°C
(78°F)
Average low22°C
(72°F)		21°C
(70°F)		21°C
(69°F)		18°C
(64°F)		15°C
(60°F)		14°C
(58°F)		12°C
(54°F)		14°C
(58°F)		18°C
(64°F)		19°C
(67°F)		20°C
(68°F)		21°C
(70°F)
Mean minimum19°C
(66°F)		17°C
(62°F)		16°C
(61°F)		11°C
(53°F)		8°C
(46°F)		7°C
(45°F)		2°C
(36°F)		5°C
(41°F)		11°C
(52°F)		12°C
(54°F)		16°C
(61°F)		16°C
(61°F)
Minimum16°C
(61°F)		14°C
(58°F)		14°C
(58°F)		7°C
(45°F)		5°C
(42°F)		0°C
(33°F)		-0°C
(32°F)		3°C
(37°F)		8°C
(46°F)		9°C
(48°F)		14°C
(57°F)		14°C
(58°F)

Compare climate in Costa Rica with other places

Compare temperature, precipitation, sunshine, UV index in Costa Rica, Brazil with other places around the world.

Monthly average precipitation in Costa Rica, Brazil

Costa Rica usually has the most precipitation in January, October and December, with an average of 14 rainy days and 184 mm (7.2 inches) of precipitation per month. The driest months in Costa Rica are April, July and September. On average, 48 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Costa Rica. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)160 (6.3)131 (5.1)146 (5.8)63 (2.5)98 (3.9)88 (3.5)23 (0.9)94 (3.7)57 (2.2)176 (6.9)100 (3.9)216 (8.5)
Average precipitation days (≥ 1 mm)161413798366131014

Monthly sunshine hours in Costa Rica, Brazil

The sunniest months in Costa Rica are March, November and December, when the sun shines an average of 10 hours 25 minutes a day. Least sunny months in Costa Rica: January, May and June receive an average of 8 hours 9 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Costa Rica. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours253303312290264232292277292293320325
Mean daily daylight hours13h 22m12h 51m12h 11m11h 30m10h 57m10h 42m10h 50m11h 19m11h 57m12h 38m13h 14m13h 32m

Solar UV radiation in Costa Rica, Brazil

Costa Rica experiences the highest level of ultraviolet (UV) radiation in January, November and December, when the maximum UV index can reach values of 15 - 15, which corresponds to the Extreme category of sun exposure. May, June and July are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Costa Rica UV Index data.

Average daily maximum UV levels by month for Costa Rica. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)15151311867911141515