Nicoya Weather in December

NASA POWER reanalysis for the half-degree grid cell around Nicoya, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 30°C on December 1 to 32°C on December 31, and lows from 24°C to 24°C. Normal precipitation for the month is 22 mm over about 5 wet days.

December day by day

The normal high and low for each date, in °C.

Normal low
Normal high
Reanalysis extreme high
Reanalysis extreme low

December at a glance

Average high: 31°C
Average low: 24°C
Precipitation: 22 mm
Reanalysis high: 34°CDec 21, 1994
Reanalysis low: 21°CDec 15, 2010
Daylight: 11 h 34 min to 11 h 32 min
Cloud cover: 41%
Humidity: 76%
Dew point: 22°C
Wind: 16.6 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

Date	Normal high	Normal low	Reanalysis high	Reanalysis low	Chance wet
Dec 1	30°C	24°C	33°C 1993	22°C 2011	30%
Dec 2	30°C	24°C	32°C 1991	22°C 2011	30%
Dec 3	30°C	24°C	33°C 2009	22°C 2011	28%
Dec 4	30°C	24°C	33°C 2009	22°C 2001	26%
Dec 5	30°C	24°C	33°C 1993	22°C 2010	25%
Dec 6	30°C	24°C	33°C 1994	23°C 1996	24%
Dec 7	30°C	24°C	33°C 1993	22°C 2010	24%
Dec 8	30°C	24°C	33°C 1993	22°C 2010	23%
Dec 9	30°C	24°C	34°C 1993	23°C 2010	21%
Dec 10	30°C	24°C	33°C 1993	22°C 2010	21%
Dec 11	30°C	24°C	33°C 1994	21°C 2010	20%
Dec 12	30°C	24°C	33°C 2009	22°C 2017	20%
Dec 13	30°C	24°C	33°C 2009	22°C 2017	20%
Dec 14	31°C	24°C	33°C 1994	21°C 2010	19%
Dec 15	31°C	24°C	33°C 1994	21°C 2010	18%
Dec 16	31°C	24°C	33°C 1994	22°C 1997	18%
Dec 17	31°C	24°C	33°C 2009	22°C 2010	17%
Dec 18	31°C	24°C	33°C 1994	22°C 2010	16%
Dec 19	31°C	24°C	33°C 1994	23°C 2008	15%
Dec 20	31°C	24°C	33°C 1993	23°C 2008	13%
Dec 21	31°C	24°C	34°C 1994	22°C 2010	12%
Dec 22	31°C	24°C	33°C 1994	22°C 2010	11%
Dec 23	31°C	24°C	33°C 1994	22°C 2010	10%
Dec 24	31°C	24°C	33°C 1993	22°C 2010	9%
Dec 25	31°C	24°C	33°C 2002	22°C 2013	8%
Dec 26	31°C	24°C	34°C 2009	23°C 2010	8%
Dec 27	31°C	24°C	33°C 1992	22°C 1999	8%
Dec 28	31°C	24°C	34°C 1992	21°C 1999	7%
Dec 29	32°C	24°C	33°C 2009	21°C 2010	6%
Dec 30	32°C	24°C	33°C 2009	22°C 1999	6%
Dec 31	32°C	24°C	33°C 2015	21°C 1999	6%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (CST).

December 1: sunrise 5:44 AM, sunset 5:18 PM
December 31: sunrise 5:59 AM, sunset 5:31 PM

Every day of December: sun and moon

Other months

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-26. Sun and moon: computed with the NOAA solar equations and Meeus.