Fonseca Weather in December

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

Average highs run from 29°C on December 1 to 29°C on December 31, and lows from 20°C to 19°C. Normal precipitation for the month is 29 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: 29°C
Average low: 20°C
Precipitation: 29 mm
Reanalysis high: 34°CDec 10, 2015
Reanalysis low: 14°CDec 21, 2008
Daylight: 11 h 33 min to 11 h 31 min
Cloud cover: 44%
Humidity: 79%
Dew point: 19°C
Wind: 5.8 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	29°C	20°C	32°C 2009	17°C 1993	23%
Dec 2	29°C	20°C	34°C 2015	18°C 2005	23%
Dec 3	29°C	20°C	32°C 2009	18°C 2012	22%
Dec 4	29°C	20°C	32°C 2019	18°C 2012	21%
Dec 5	29°C	20°C	33°C 2009	18°C 2010	20%
Dec 6	29°C	20°C	32°C 2020	18°C 2018	20%
Dec 7	29°C	20°C	33°C 1997	18°C 1992	19%
Dec 8	29°C	20°C	32°C 2020	19°C 2002	20%
Dec 9	29°C	20°C	33°C 2015	19°C 2013	20%
Dec 10	29°C	20°C	34°C 2015	18°C 1992	19%
Dec 11	29°C	20°C	33°C 2015	18°C 1992	18%
Dec 12	29°C	20°C	33°C 2015	17°C 2017	18%
Dec 13	29°C	20°C	32°C 1997	18°C 2017	17%
Dec 14	29°C	20°C	33°C 1997	17°C 2006	17%
Dec 15	29°C	20°C	32°C 1997	16°C 2012	16%
Dec 16	29°C	20°C	31°C 2020	17°C 2000	15%
Dec 17	29°C	20°C	31°C 2019	18°C 2005	14%
Dec 18	29°C	20°C	33°C 2009	17°C 1992	14%
Dec 19	29°C	20°C	31°C 2006	16°C 2000	14%
Dec 20	29°C	19°C	32°C 2018	17°C 1992	14%
Dec 21	29°C	19°C	32°C 2018	14°C 2008	13%
Dec 22	29°C	19°C	32°C 1997	17°C 2008	12%
Dec 23	29°C	19°C	32°C 2019	17°C 1991	10%
Dec 24	29°C	19°C	34°C 2019	17°C 2008	9%
Dec 25	29°C	19°C	32°C 1997	17°C 1999	8%
Dec 26	29°C	19°C	32°C 1997	17°C 1999	8%
Dec 27	29°C	19°C	33°C 1997	16°C 1999	7%
Dec 28	29°C	19°C	33°C 1997	16°C 2005	7%
Dec 29	29°C	19°C	34°C 1997	16°C 2008	7%
Dec 30	29°C	19°C	33°C 1997	15°C 2005	6%
Dec 31	29°C	19°C	32°C 2019	17°C 2003	6%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-5).

December 1: sunrise 5:54 AM, sunset 5:27 PM
December 31: sunrise 6:09 AM, sunset 5:40 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.