Mendoza Weather in December

NASA POWER reanalysis for the half-degree grid cell around Mendoza, 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 33°C on December 31, and lows from 15°C to 18°C. Normal precipitation for the month is 31 mm over about 6 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: 32°C
Average low: 16°C
Precipitation: 31 mm
Reanalysis high: 42°CDec 10, 2020
Reanalysis low: 5°CDec 3, 2001
Daylight: 14 h 09 min to 14 h 17 min
Cloud cover: 38%
Humidity: 37%
Dew point: 7°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	15°C	37°C 1994	7°C 2014	20%
Dec 2	30°C	15°C	37°C 1993	6°C 2001	21%
Dec 3	31°C	15°C	38°C 1993	5°C 2001	21%
Dec 4	31°C	15°C	40°C 2016	10°C 1994	22%
Dec 5	31°C	15°C	38°C 2014	9°C 1999	22%
Dec 6	31°C	15°C	37°C 2000	6°C 1999	22%
Dec 7	31°C	15°C	38°C 2013	9°C 1999	21%
Dec 8	31°C	15°C	38°C 1994	9°C 2001	21%
Dec 9	31°C	16°C	37°C 2012	9°C 1996	20%
Dec 10	31°C	16°C	42°C 2020	9°C 1996	20%
Dec 11	31°C	16°C	38°C 1993	8°C 1991	19%
Dec 12	32°C	16°C	38°C 2020	6°C 2010	19%
Dec 13	32°C	16°C	37°C 2007	9°C 2010	19%
Dec 14	32°C	16°C	36°C 2020	11°C 2016	19%
Dec 15	32°C	16°C	37°C 2008	11°C 2007	18%
Dec 16	32°C	16°C	39°C 2017	8°C 2003	16%
Dec 17	32°C	16°C	37°C 1995	12°C 2003	15%
Dec 18	32°C	17°C	38°C 1995	11°C 2015	16%
Dec 19	33°C	17°C	40°C 1995	12°C 2015	16%
Dec 20	33°C	17°C	41°C 1995	11°C 2014	15%
Dec 21	33°C	17°C	38°C 2003	9°C 2014	15%
Dec 22	33°C	17°C	37°C 1996	7°C 2014	16%
Dec 23	33°C	17°C	38°C 2019	9°C 2014	18%
Dec 24	33°C	17°C	41°C 2012	10°C 2011	19%
Dec 25	33°C	18°C	40°C 2000	13°C 2006	19%
Dec 26	33°C	18°C	38°C 1998	12°C 2012	21%
Dec 27	33°C	18°C	37°C 1998	12°C 2012	21%
Dec 28	33°C	18°C	37°C 1995	9°C 2003	22%
Dec 29	33°C	18°C	39°C 2017	13°C 2003	25%
Dec 30	33°C	18°C	39°C 1994	14°C 2000	27%
Dec 31	33°C	18°C	40°C 2016	13°C 2020	28%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-3).

December 1: sunrise 6:20 AM, sunset 8:29 PM
December 31: sunrise 6:30 AM, sunset 8:47 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.