Boca Chica Weather in December

NASA POWER reanalysis for the half-degree grid cell around Boca Chica, 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 30°C on December 31, and lows from 23°C to 23°C. Normal precipitation for the month is 40 mm over about 9 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: 30°C
Average low: 23°C
Precipitation: 40 mm
Record high: 35°CDec 5, 2017
Record low: 13°CDec 10, 1990
Daylight: 11 h 07 min to 11 h 03 min
Cloud cover: 42%
Humidity: 75%
Dew point: 21°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	Record high	Record low	Chance wet
Dec 1	30°C	23°C	34°C 2010	19°C 1973	27%
Dec 2	30°C	23°C	34°C 2023	19°C 1993	27%
Dec 3	30°C	23°C	33°C 2019	17°C 1999	27%
Dec 4	30°C	23°C	34°C 2024	18°C 1999	26%
Dec 5	30°C	23°C	35°C 2017	17°C 1944	26%
Dec 6	30°C	23°C	34°C 2017	15°C 1944	25%
Dec 7	30°C	23°C	33°C 2021	16°C 1944	25%
Dec 8	30°C	23°C	35°C 2023	18°C 1944	25%
Dec 9	30°C	23°C	33°C 2018	18°C 1951	24%
Dec 10	30°C	23°C	34°C 2017	13°C 1990	26%
Dec 11	30°C	23°C	32°C 1947	18°C 1943	26%
Dec 12	30°C	23°C	33°C 2021	18°C 1951	26%
Dec 13	30°C	23°C	33°C 2013	17°C 1973	25%
Dec 14	30°C	23°C	33°C 1947	18°C 1949	24%
Dec 15	30°C	23°C	33°C 1980	17°C 1949	26%
Dec 16	30°C	23°C	33°C 2024	17°C 1949	27%
Dec 17	30°C	23°C	33°C 2024	18°C 1949	28%
Dec 18	30°C	23°C	33°C 2021	17°C 1996	28%
Dec 19	30°C	23°C	32°C 2011	17°C 1984	29%
Dec 20	30°C	23°C	33°C 1946	17°C 1984	30%
Dec 21	30°C	23°C	34°C 2017	18°C 1984	30%
Dec 22	30°C	23°C	34°C 2023	16°C 1973	31%
Dec 23	30°C	23°C	34°C 2017	18°C 1979	31%
Dec 24	30°C	23°C	32°C 2014	18°C 1979	32%
Dec 25	30°C	23°C	33°C 2014	18°C 1975	33%
Dec 26	30°C	23°C	33°C 2014	17°C 1979	32%
Dec 27	30°C	23°C	33°C 2019	17°C 1975	32%
Dec 28	30°C	23°C	33°C 2022	17°C 1975	32%
Dec 29	30°C	23°C	33°C 2022	17°C 1975	33%
Dec 30	30°C	23°C	35°C 2023	17°C 1974	32%
Dec 31	30°C	23°C	33°C 2021	16°C 1974	32%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (AST).

December 1: sunrise 6:54 AM, sunset 6:01 PM
December 31: sunrise 7:10 AM, sunset 6:13 PM

Every day of December: sun and moon

Other months

Sources

Records: NOAA GHCN-Daily, station DRM00078486, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.