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Monthly climate in Juntas, Costa Rica

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Juntas features a tropical savanna climate (Aw). Temperatures typically range between 25 °C (76 °F) and 27 °C (81 °F) through the year, but rarely can drop to 17 °C (63 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 2138 mm (84.2 inches) and receives 170 rainy days on the 1 mm (0.04 inches) threshold annually. Juntas enjoys an average of 3397 hours of sunshine throughout the year, and daylight varies from 11 hours 31 minutes to 12 hours 42 minutes per day.

Monthly average temperatures in Juntas, Costa Rica

The warmest months in Juntas are March, April and May, with daily mean temperatures ranging from 26 to 27 °C (79 - 81 °F) throughout the day. The coldest temperatures usually occur in September, October and November, when daily mean temperatures range from 25 to 25 °C (76 - 77 °F) throughout the day. On average each year, Juntas 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 Juntas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum33°C
(91°F)		34°C
(94°F)		35°C
(95°F)		36°C
(97°F)		36°C
(97°F)		34°C
(94°F)		33°C
(91°F)		33°C
(93°F)		32°C
(90°F)		32°C
(89°F)		32°C
(90°F)		32°C
(90°F)
Mean maximum32°C
(90°F)		33°C
(92°F)		34°C
(93°F)		35°C
(95°F)		34°C
(94°F)		32°C
(90°F)		32°C
(90°F)		32°C
(90°F)		32°C
(89°F)		31°C
(88°F)		31°C
(88°F)		31°C
(89°F)
Average high30°C
(86°F)		31°C
(89°F)		32°C
(90°F)		33°C
(91°F)		31°C
(87°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		29°C
(85°F)		29°C
(84°F)		29°C
(84°F)		30°C
(86°F)
Daily mean25°C
(78°F)		26°C
(79°F)		26°C
(80°F)		27°C
(81°F)		26°C
(79°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(77°F)		25°C
(76°F)		25°C
(77°F)		25°C
(77°F)
Average low21°C
(71°F)		21°C
(71°F)		22°C
(72°F)		23°C
(73°F)		23°C
(74°F)		23°C
(73°F)		23°C
(73°F)		23°C
(73°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		22°C
(71°F)
Mean minimum19°C
(67°F)		19°C
(67°F)		20°C
(68°F)		21°C
(70°F)		22°C
(72°F)		22°C
(71°F)		21°C
(71°F)		21°C
(71°F)		21°C
(71°F)		21°C
(70°F)		21°C
(69°F)		20°C
(68°F)
Minimum17°C
(63°F)		19°C
(66°F)		19°C
(66°F)		20°C
(69°F)		21°C
(71°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		21°C
(69°F)		20°C
(68°F)		20°C
(67°F)

Compare climate in Juntas with other places

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

Monthly average precipitation in Juntas, Costa Rica

Juntas usually has the most precipitation in June, September and October, with an average of 27 rainy days and 383 mm (15.1 inches) of precipitation per month. The driest months in Juntas are January, February and March. On average, 4 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Juntas. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)9 (0.4)2 (0.1)1 (0.0)60 (2.4)298 (11.7)314 (12.4)170 (6.7)278 (11.0)340 (13.4)495 (19.5)143 (5.6)27 (1.1)
Average precipitation days (≥ 1 mm)2008222520232828122

Monthly sunshine hours in Juntas, Costa Rica

The sunniest months in Juntas are March, April and December, when the sun shines an average of 10 hours 31 minutes a day. Least sunny months in Juntas: January, September and October receive an average of 8 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Juntas. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours256299333319266267296264257235286315
Mean daily daylight hours11h 35m11h 47m12h 3m12h 20m12h 35m12h 42m12h 38m12h 25m12h 9m11h 52m11h 38m11h 31m

Solar UV radiation in Juntas, Costa Rica

Juntas experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 14 - 14, 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 Juntas UV Index data.

Average daily maximum UV levels by month for Juntas. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)111314141414141313131110