Porto Grande Weather in December

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

Average highs run from 34°C on December 1 to 32°C on December 31, and lows from 24°C to 23°C. Normal precipitation for the month is 127 mm over about 19 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: 23°C
Precipitation: 127 mm
Reanalysis high: 38°CDec 12, 2016
Reanalysis low: 22°CDec 2, 2006
Daylight: 12 h 05 min to 12 h 05 min
Cloud cover: 66%
Humidity: 75%
Dew point: 22°C
Wind: 5.8 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	34°C	24°C	38°C 2016	22°C 1994	40%
Dec 2	34°C	24°C	37°C 2014	22°C 2006	41%
Dec 3	34°C	24°C	37°C 2016	22°C 1994	41%
Dec 4	34°C	24°C	37°C 2017	22°C 2006	42%
Dec 5	34°C	24°C	38°C 2016	22°C 2011	44%
Dec 6	34°C	24°C	37°C 2016	22°C 1996	44%
Dec 7	34°C	24°C	37°C 2012	22°C 2018	45%
Dec 8	34°C	24°C	37°C 2016	22°C 1994	47%
Dec 9	34°C	24°C	37°C 2017	22°C 2009	50%
Dec 10	34°C	24°C	37°C 2004	22°C 1998	51%
Dec 11	34°C	24°C	37°C 2004	22°C 1994	53%
Dec 12	34°C	24°C	38°C 2016	22°C 2010	55%
Dec 13	33°C	24°C	37°C 2015	22°C 1994	57%
Dec 14	33°C	24°C	37°C 2015	22°C 1994	60%
Dec 15	33°C	24°C	36°C 2015	22°C 2000	62%
Dec 16	33°C	24°C	36°C 2004	22°C 2000	63%
Dec 17	33°C	23°C	36°C 2004	22°C 2000	66%
Dec 18	33°C	23°C	36°C 2004	22°C 2000	68%
Dec 19	33°C	23°C	36°C 2011	22°C 2000	70%
Dec 20	33°C	23°C	35°C 2001	22°C 2007	72%
Dec 21	32°C	23°C	36°C 2004	22°C 2013	74%
Dec 22	32°C	23°C	36°C 2004	22°C 1998	74%
Dec 23	32°C	23°C	37°C 2015	22°C 2018	76%
Dec 24	32°C	23°C	36°C 2015	22°C 1998	76%
Dec 25	32°C	23°C	36°C 2001	22°C 1994	77%
Dec 26	32°C	23°C	36°C 2015	22°C 1994	78%
Dec 27	32°C	23°C	35°C 2014	22°C 1994	77%
Dec 28	32°C	23°C	35°C 2014	22°C 1994	78%
Dec 29	32°C	23°C	35°C 1997	22°C 2018	77%
Dec 30	32°C	23°C	36°C 2014	22°C 2007	78%
Dec 31	32°C	23°C	36°C 2015	22°C 2005	79%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 6:12 AM, sunset 6:17 PM
December 31: sunrise 6:26 AM, sunset 6:31 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.