Morteros Weather in December

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

Average highs run from 31°C on December 1 to 34°C on December 31, and lows from 17°C to 20°C. Normal precipitation for the month is 140 mm over about 12 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: 33°C
Average low: 19°C
Precipitation: 140 mm
Reanalysis high: 44°CDec 26, 2013
Reanalysis low: 9°CDec 6, 1999
Daylight: 13 h 59 min to 14 h 06 min
Cloud cover: 55%
Humidity: 58%
Dew point: 16°C
Wind: 14.8 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	31°C	17°C	38°C 2007	10°C 1993	41%
Dec 2	32°C	17°C	41°C 2004	11°C 2014	41%
Dec 3	32°C	17°C	38°C 1993	11°C 2008	41%
Dec 4	32°C	18°C	38°C 1999	12°C 1994	40%
Dec 5	32°C	18°C	38°C 1995	12°C 2020	39%
Dec 6	32°C	18°C	39°C 2014	9°C 1999	38%
Dec 7	32°C	18°C	39°C 2017	11°C 1999	38%
Dec 8	32°C	18°C	41°C 2008	13°C 2001	38%
Dec 9	32°C	18°C	41°C 1994	11°C 2003	39%
Dec 10	32°C	18°C	40°C 1994	15°C 1998	38%
Dec 11	32°C	18°C	40°C 2018	12°C 2005	38%
Dec 12	33°C	18°C	39°C 1998	12°C 2010	39%
Dec 13	33°C	18°C	42°C 2017	11°C 2010	40%
Dec 14	33°C	19°C	38°C 2013	12°C 2020	42%
Dec 15	33°C	19°C	39°C 2004	13°C 2007	42%
Dec 16	33°C	19°C	43°C 2017	10°C 2000	42%
Dec 17	33°C	19°C	40°C 2013	13°C 2000	41%
Dec 18	33°C	19°C	40°C 1995	15°C 1998	39%
Dec 19	33°C	19°C	42°C 2011	13°C 2015	40%
Dec 20	33°C	19°C	43°C 2011	13°C 2005	40%
Dec 21	33°C	19°C	44°C 2011	14°C 1993	41%
Dec 22	33°C	19°C	41°C 2013	12°C 2014	40%
Dec 23	33°C	20°C	41°C 2013	11°C 2014	41%
Dec 24	33°C	20°C	41°C 2013	12°C 2014	41%
Dec 25	34°C	20°C	43°C 2013	12°C 2011	41%
Dec 26	34°C	20°C	44°C 2013	14°C 1991	40%
Dec 27	34°C	20°C	40°C 2008	13°C 1991	39%
Dec 28	34°C	20°C	39°C 2019	14°C 2012	38%
Dec 29	34°C	20°C	40°C 2013	13°C 2003	38%
Dec 30	34°C	20°C	42°C 2013	14°C 1993	38%
Dec 31	34°C	20°C	41°C 1994	14°C 2020	37%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 5:58 AM, sunset 7:57 PM
December 31: sunrise 6:08 AM, sunset 8:14 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.