Santa Maria Weather in December

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

Average highs run from 26°C on December 1 to 26°C on December 31, and lows from 20°C to 18°C. Normal precipitation for the month is 166 mm over about 15 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: 26°C
Average low: 19°C
Precipitation: 166 mm
Reanalysis high: 32°CDec 30, 1994
Reanalysis low: 14°CDec 29, 1996
Daylight: 11 h 08 min to 11 h 04 min
Cloud cover: 78%
Humidity: 90%
Dew point: 20°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	Reanalysis high	Reanalysis low	Chance wet
Dec 1	26°C	20°C	30°C 1994	15°C 2007	50%
Dec 2	26°C	20°C	30°C 2015	15°C 2003	50%
Dec 3	26°C	19°C	31°C 2018	16°C 2009	49%
Dec 4	26°C	19°C	31°C 2018	16°C 2009	49%
Dec 5	26°C	19°C	30°C 2018	15°C 2009	50%
Dec 6	26°C	19°C	31°C 2018	14°C 2009	49%
Dec 7	26°C	19°C	31°C 1997	15°C 2009	50%
Dec 8	26°C	19°C	30°C 1997	16°C 2008	51%
Dec 9	26°C	19°C	31°C 1994	16°C 1993	51%
Dec 10	26°C	19°C	31°C 2018	16°C 2019	51%
Dec 11	26°C	19°C	32°C 1994	16°C 2002	51%
Dec 12	26°C	19°C	31°C 1994	17°C 1994	51%
Dec 13	26°C	19°C	31°C 2010	16°C 1994	51%
Dec 14	26°C	19°C	30°C 2006	18°C 2009	51%
Dec 15	26°C	19°C	31°C 1997	16°C 2003	51%
Dec 16	26°C	19°C	31°C 1997	15°C 2008	50%
Dec 17	26°C	19°C	32°C 1997	15°C 2003	48%
Dec 18	26°C	19°C	30°C 1997	16°C 2008	47%
Dec 19	26°C	19°C	31°C 2002	15°C 2008	46%
Dec 20	26°C	19°C	30°C 2018	15°C 1997	45%
Dec 21	26°C	19°C	31°C 2002	16°C 2003	45%
Dec 22	26°C	19°C	31°C 1997	14°C 1999	45%
Dec 23	26°C	18°C	30°C 1997	14°C 1999	45%
Dec 24	25°C	18°C	30°C 2002	14°C 2005	44%
Dec 25	25°C	18°C	30°C 2002	15°C 1991	43%
Dec 26	25°C	18°C	32°C 2018	15°C 2001	41%
Dec 27	25°C	18°C	30°C 1991	14°C 2001	39%
Dec 28	25°C	18°C	31°C 1992	15°C 2003	38%
Dec 29	25°C	18°C	31°C 1994	14°C 1996	37%
Dec 30	26°C	18°C	32°C 1994	15°C 1996	35%
Dec 31	26°C	18°C	29°C 1997	14°C 1996	34%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+8).

December 1: sunrise 6:08 AM, sunset 5:16 PM
December 31: sunrise 6:24 AM, sunset 5:28 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.