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Monthly climate in Nicoya, Guanacaste, Costa Rica

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Nicoya features a tropical savanna climate (Aw).Temperatures typically range between 26 °C (79 °F) and 29 °C (84 °F) through the year, but rarely can drop to 17 °C (64 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 2139 mm (84.2 inches) and receives 183 rainy days on the 1 mm (0.04 inches) threshold annually.Nicoya enjoys an average of 3499 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 Nicoya, Guanacaste, Costa Rica §

The warmest months in Nicoya are February, March and April, with daily mean temperatures ranging from 28 to 29 °C (82 - 84 °F) throughout the day. The coldest temperatures usually occur in September, October and November, when daily mean temperatures range from 26 to 26 °C (79 - 79 °F) throughout the day. On average each year, Nicoya experiences 329 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 Nicoya, Guanacaste, Costa Rica.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 36°C
(97°F)		 37°C
(99°F)		 37°C
(99°F)		 39°C
(102°F)		 38°C
(101°F)		 36°C
(97°F)		 35°C
(95°F)		 35°C
(95°F)		 34°C
(93°F)		 33°C
(92°F)		 33°C
(93°F)		 35°C
(95°F)
Mean maximum 35°C
(95°F)		 36°C
(97°F)		 37°C
(98°F)		 38°C
(100°F)		 37°C
(98°F)		 34°C
(93°F)		 33°C
(93°F)		 34°C
(93°F)		 33°C
(92°F)		 33°C
(91°F)		 32°C
(91°F)		 34°C
(93°F)
Average high 32°C
(91°F)		 34°C
(93°F)		 35°C
(94°F)		 35°C
(96°F)		 33°C
(91°F)		 31°C
(89°F)		 31°C
(88°F)		 31°C
(88°F)		 31°C
(88°F)		 30°C
(86°F)		 30°C
(87°F)		 32°C
(89°F)
Daily mean 27°C
(81°F)		 28°C
(82°F)		 28°C
(83°F)		 29°C
(84°F)		 28°C
(82°F)		 27°C
(80°F)		 27°C
(80°F)		 26°C
(80°F)		 26°C
(79°F)		 26°C
(79°F)		 26°C
(79°F)		 27°C
(80°F)
Average low 22°C
(73°F)		 23°C
(73°F)		 23°C
(74°F)		 24°C
(76°F)		 24°C
(76°F)		 24°C
(75°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(74°F)		 23°C
(73°F)		 22°C
(73°F)		 23°C
(73°F)
Mean minimum 20°C
(68°F)		 20°C
(68°F)		 21°C
(71°F)		 22°C
(72°F)		 23°C
(74°F)		 22°C
(73°F)		 22°C
(71°F)		 22°C
(72°F)		 22°C
(72°F)		 22°C
(71°F)		 21°C
(69°F)		 21°C
(69°F)
Minimum 17°C
(64°F)		 19°C
(66°F)		 20°C
(69°F)		 22°C
(71°F)		 23°C
(73°F)		 22°C
(72°F)		 21°C
(71°F)		 22°C
(71°F)		 22°C
(71°F)		 21°C
(71°F)		 20°C
(68°F)		 20°C
(69°F)

Compare climate in Nicoya with other places

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

Monthly average precipitation in Nicoya, Guanacaste, Costa Rica §

Nicoya usually has the most precipitation in June, September and October, with an average of 27 rainy days and 373 mm (14.7 inches) of precipitation per month.The driest months in Nicoya are January, February and March. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Nicoya, Guanacaste, Costa Rica.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 12 (0.5) 2 (0.1) 4 (0.1) 51 (2.0) 286 (11.2) 359 (14.1) 215 (8.4) 290 (11.4) 353 (13.9) 407 (16.0) 130 (5.1) 31 (1.2)
Average precipitation days (≥ 1 mm) 2 0 0 9 22 26 23 25 28 29 15 4

Monthly sunshine hours in Nicoya, Guanacaste, Costa Rica §

The sunniest months in Nicoya are March, April and December, when the sun shines an average of 10 hours 39 minutes a day.Least sunny months in Nicoya: January, September and October receive an average of 8 hours 24 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Nicoya, Guanacaste, Costa Rica.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 261 299 334 324 277 282 311 278 267 244 295 321
Mean daily daylight hours 11h 35m 11h 47m 12h 3m 12h 20m 12h 35m 12h 42m 12h 38m 12h 25m 12h 9m 11h 52m 11h 38m 11h 31m

Solar UV radiation in Nicoya, Guanacaste, Costa Rica §

Nicoya 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 Nicoya UV Index data.

Average daily maximum UV levels by month for Nicoya, Guanacaste, Costa Rica.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 11 13 14 14 14 14 14 13 13 13 11 10