Zacatecoluca Weather in December

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

Average highs run from 32°C on December 1 to 33°C on December 31, and lows from 22°C to 22°C. Normal precipitation for the month is 9 mm over about 3 wet days.

December day by day

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

Normal low
Normal high
Record high
Record low

December at a glance

Average high: 32°C
Average low: 22°C
Precipitation: 9 mm
Record high: 37°CDec 16, 2016
Record low: 12°CDec 30, 1997
Daylight: 11 h 23 min to 11 h 21 min
Cloud cover: 24%
Humidity: 64%
Dew point: 19°C
Wind: 10.8 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	Record high	Record low	Chance wet
Dec 1	32°C	22°C	32°C 1994	14°C 1962	10%
Dec 2	32°C	22°C	33°C 2003	15°C 1957	9%
Dec 3	32°C	22°C	33°C 1995	15°C 1960	8%
Dec 4	32°C	22°C	33°C 2009	14°C 1959	8%
Dec 5	32°C	22°C	33°C 2009	14°C 1959	8%
Dec 6	32°C	22°C	34°C 2009	14°C 1959	8%
Dec 7	32°C	22°C	34°C 2009	15°C 1982	9%
Dec 8	32°C	22°C	33°C 2013	15°C 1988	9%
Dec 9	32°C	22°C	32°C 2009	15°C 1960	9%
Dec 10	32°C	22°C	33°C 2013	13°C 1957	9%
Dec 11	32°C	22°C	32°C 2009	13°C 1957	10%
Dec 12	32°C	22°C	33°C 2009	15°C 1957	9%
Dec 13	32°C	22°C	33°C 2013	14°C 1957	10%
Dec 14	32°C	22°C	34°C 2009	14°C 1957	10%
Dec 15	32°C	22°C	34°C 2009	15°C 1960	9%
Dec 16	32°C	22°C	37°C 2016	13°C 2010	9%
Dec 17	32°C	22°C	34°C 2013	13°C 1962	8%
Dec 18	32°C	22°C	33°C 1965	13°C 1962	8%
Dec 19	32°C	22°C	36°C 1987	14°C 1957	7%
Dec 20	32°C	22°C	33°C 2016	13°C 1984	7%
Dec 21	32°C	22°C	32°C 2014	14°C 1966	6%
Dec 22	32°C	22°C	34°C 1987	13°C 1966	5%
Dec 23	32°C	22°C	33°C 1987	13°C 1966	5%
Dec 24	32°C	22°C	33°C 1982	15°C 1958	4%
Dec 25	33°C	22°C	34°C 1987	14°C 1964	4%
Dec 26	33°C	22°C	33°C 1987	13°C 1963	4%
Dec 27	33°C	22°C	33°C 2014	14°C 1961	4%
Dec 28	33°C	22°C	32°C 2015	14°C 1963	3%
Dec 29	33°C	22°C	34°C 1987	15°C 1961	3%
Dec 30	33°C	22°C	33°C 2014	12°C 1997	3%
Dec 31	33°C	22°C	33°C 2013	14°C 1982	3%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (CST).

December 1: sunrise 6:03 AM, sunset 5:26 PM
December 31: sunrise 6:18 AM, sunset 5:39 PM

Every day of December: sun and moon

Other months

Sources

Records: NOAA GHCN-Daily, station ES003800510, every year on file, quality-flagged values removed. 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.