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Monthly climate in La Fortuna, Costa Rica

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification La Fortuna features a tropical savanna climate (Aw). Temperatures typically range between 23 °C (74 °F) and 25 °C (78 °F) through the year, but rarely can drop to 14 °C (58 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 2071 mm (81.5 inches) and receives 244 rainy days on the 1 mm (0.04 inches) threshold annually. La Fortuna enjoys an average of 3425 hours of sunshine throughout the year, and daylight varies from 11 hours 29 minutes to 12 hours 43 minutes per day.

Monthly average temperatures in La Fortuna, Costa Rica

The warmest months in La Fortuna are April, May and June, with daily mean temperatures ranging from 25 to 25 °C (77 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 23 to 24 °C (74 - 75 °F) throughout the day. On average each year, La Fortuna experiences 321 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 La Fortuna. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum30°C
(87°F)		33°C
(91°F)		33°C
(91°F)		34°C
(93°F)		34°C
(93°F)		32°C
(90°F)		31°C
(88°F)		32°C
(90°F)		32°C
(89°F)		31°C
(87°F)		30°C
(87°F)		29°C
(85°F)
Mean maximum29°C
(84°F)		31°C
(87°F)		31°C
(88°F)		33°C
(92°F)		32°C
(91°F)		31°C
(88°F)		30°C
(87°F)		31°C
(87°F)		31°C
(89°F)		30°C
(87°F)		29°C
(85°F)		28°C
(83°F)
Average high27°C
(80°F)		28°C
(82°F)		28°C
(83°F)		30°C
(87°F)		30°C
(86°F)		29°C
(84°F)		28°C
(83°F)		28°C
(83°F)		29°C
(85°F)		28°C
(83°F)		27°C
(82°F)		27°C
(80°F)
Daily mean23°C
(74°F)		24°C
(75°F)		24°C
(76°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		24°C
(75°F)		24°C
(75°F)		23°C
(74°F)
Average low20°C
(69°F)		20°C
(69°F)		21°C
(70°F)		21°C
(71°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		22°C
(71°F)		21°C
(71°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)
Mean minimum18°C
(65°F)		18°C
(65°F)		19°C
(66°F)		19°C
(67°F)		21°C
(69°F)		21°C
(70°F)		21°C
(69°F)		20°C
(69°F)		20°C
(69°F)		20°C
(68°F)		20°C
(68°F)		19°C
(66°F)
Minimum14°C
(58°F)		17°C
(63°F)		18°C
(64°F)		18°C
(64°F)		19°C
(67°F)		20°C
(69°F)		20°C
(68°F)		20°C
(68°F)		20°C
(68°F)		20°C
(67°F)		18°C
(65°F)		18°C
(64°F)

Compare climate in La Fortuna with other places

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

Monthly average precipitation in La Fortuna, Costa Rica

La Fortuna usually has the most precipitation in May, June and October, with an average of 27 rainy days and 338 mm (13.3 inches) of precipitation per month. The driest months in La Fortuna are January, February and March. On average, 26 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in La Fortuna. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)42 (1.6)18 (0.7)19 (0.8)52 (2.1)308 (12.1)314 (12.4)146 (5.7)257 (10.1)295 (11.6)391 (15.4)169 (6.7)60 (2.3)
Average precipitation days (≥ 1 mm)1166122528282728292420

Monthly sunshine hours in La Fortuna, Costa Rica

The sunniest months in La Fortuna are March, April and December, when the sun shines an average of 10 hours 29 minutes a day. Least sunny months in La Fortuna: January, September and October receive an average of 8 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in La Fortuna. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours255298332319270271299271261243287312
Mean daily daylight hours11h 33m11h 46m12h 3m12h 21m12h 36m12h 43m12h 39m12h 26m12h 9m11h 51m11h 37m11h 29m

Solar UV radiation in La Fortuna, Costa Rica

La Fortuna experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 14 - 15, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly La Fortuna UV Index data.

Average daily maximum UV levels by month for La Fortuna. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)111314151414141313141110