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Monthly climate in Santa Ana, Costa Rica

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Santa Ana features a tropical monsoon climate (Am). Temperatures typically range between 20 °C (68 °F) and 21 °C (70 °F) through the year, but rarely can drop to 13 °C (56 °F) or can rise to as high as 29 °C (85 °F). The average annual precipitation amounts to about 2722 mm (107.2 inches) and receives 222 rainy days on the 1 mm (0.04 inches) threshold annually. Santa Ana enjoys an average of 3018 hours of sunshine throughout the year, and daylight varies from 11 hours 32 minutes to 12 hours 41 minutes per day.

Monthly average temperatures in Santa Ana, Costa Rica

The warmest months in Santa Ana are April, May and June, with daily mean temperatures ranging from 21 to 21 °C (70 - 70 °F) throughout the day. The coldest temperatures usually occur in January, October and December, when daily mean temperatures range from 20 to 20 °C (68 - 68 °F) throughout the day. On average each year, Santa Ana experiences 142 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 Santa Ana. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum27°C
(82°F)		28°C
(83°F)		28°C
(83°F)		29°C
(85°F)		28°C
(83°F)		27°C
(81°F)		27°C
(81°F)		28°C
(82°F)		27°C
(80°F)		27°C
(80°F)		26°C
(79°F)		26°C
(80°F)
Mean maximum26°C
(80°F)		27°C
(81°F)		27°C
(82°F)		28°C
(83°F)		27°C
(80°F)		26°C
(80°F)		27°C
(80°F)		27°C
(80°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)
Average high24°C
(76°F)		25°C
(78°F)		26°C
(79°F)		26°C
(79°F)		25°C
(77°F)		25°C
(77°F)		25°C
(76°F)		25°C
(76°F)		25°C
(76°F)		24°C
(75°F)		24°C
(75°F)		24°C
(76°F)
Daily mean20°C
(68°F)		20°C
(69°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°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)		20°C
(68°F)
Average low16°C
(62°F)		16°C
(62°F)		17°C
(62°F)		18°C
(64°F)		18°C
(65°F)		18°C
(65°F)		18°C
(65°F)		18°C
(64°F)		17°C
(64°F)		17°C
(64°F)		17°C
(64°F)		17°C
(63°F)
Mean minimum14°C
(58°F)		14°C
(58°F)		15°C
(59°F)		16°C
(60°F)		17°C
(62°F)		17°C
(63°F)		16°C
(62°F)		16°C
(61°F)		16°C
(61°F)		16°C
(61°F)		16°C
(60°F)		15°C
(59°F)
Minimum13°C
(56°F)		13°C
(56°F)		14°C
(57°F)		15°C
(58°F)		16°C
(61°F)		16°C
(60°F)		16°C
(61°F)		16°C
(60°F)		15°C
(60°F)		15°C
(60°F)		15°C
(59°F)		15°C
(58°F)

Compare climate in Santa Ana with other places

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

Monthly average precipitation in Santa Ana, Costa Rica

Santa Ana usually has the most precipitation in May, September and October, with an average of 28 rainy days and 466 mm (18.3 inches) of precipitation per month. The driest months in Santa Ana are January, February and March. On average, 20 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Santa Ana. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)32 (1.3)13 (0.5)15 (0.6)79 (3.1)391 (15.4)351 (13.8)233 (9.2)331 (13.0)436 (17.2)570 (22.4)209 (8.2)63 (2.5)
Average precipitation days (≥ 1 mm)634162727262628291911

Monthly sunshine hours in Santa Ana, Costa Rica

The sunniest months in Santa Ana are February, March and April, when the sun shines an average of 10 hours 16 minutes a day. Least sunny months in Santa Ana: July, August and October receive an average of 6 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Santa Ana. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours249296328299235226209213229210229291
Mean daily daylight hours11h 35m11h 47m12h 3m12h 20m12h 34m12h 41m12h 37m12h 25m12h 9m11h 52m11h 38m11h 32m

Solar UV radiation in Santa Ana, Costa Rica

Santa Ana 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 12. For more detailed information, check out our hourly Santa Ana UV Index data.

Average daily maximum UV levels by month for Santa Ana. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)121315151414141313141210