Itajaí Weather in December

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

Average highs run from 27°C on December 1 to 29°C on December 31, and lows from 20°C to 22°C. Normal precipitation for the month is 158 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: 28°C
Average low: 21°C
Precipitation: 158 mm
Reanalysis high: 39°CDec 11, 2012
Reanalysis low: 15°CDec 4, 2008
Daylight: 13 h 42 min to 13 h 49 min
Cloud cover: 72%
Humidity: 78%
Dew point: 20°C
Wind: 15.5 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	27°C	20°C	33°C 2003	16°C 2001	58%
Dec 2	27°C	20°C	30°C 2014	16°C 2011	59%
Dec 3	27°C	20°C	34°C 2014	17°C 2018	59%
Dec 4	27°C	20°C	33°C 1994	15°C 2008	58%
Dec 5	27°C	20°C	33°C 2003	16°C 2016	58%
Dec 6	27°C	20°C	33°C 2012	16°C 2016	60%
Dec 7	27°C	20°C	38°C 2012	18°C 2005	61%
Dec 8	28°C	20°C	33°C 2010	15°C 2018	62%
Dec 9	28°C	20°C	33°C 2000	16°C 1995	62%
Dec 10	28°C	21°C	33°C 1991	15°C 2003	62%
Dec 11	28°C	21°C	39°C 2012	17°C 2005	62%
Dec 12	28°C	21°C	36°C 2018	18°C 2013	63%
Dec 13	28°C	21°C	35°C 1994	16°C 2009	63%
Dec 14	28°C	21°C	36°C 1994	15°C 2010	64%
Dec 15	28°C	21°C	35°C 2018	17°C 2016	65%
Dec 16	28°C	21°C	34°C 1991	18°C 2016	66%
Dec 17	28°C	21°C	37°C 1995	17°C 2000	67%
Dec 18	28°C	21°C	36°C 1995	17°C 1998	67%
Dec 19	29°C	21°C	35°C 1995	16°C 2000	67%
Dec 20	29°C	21°C	34°C 2006	19°C 1993	67%
Dec 21	29°C	21°C	35°C 2011	17°C 1993	66%
Dec 22	29°C	21°C	33°C 2011	18°C 2004	66%
Dec 23	29°C	22°C	36°C 2011	19°C 1998	66%
Dec 24	29°C	22°C	32°C 2012	18°C 2003	67%
Dec 25	29°C	22°C	37°C 2012	19°C 2002	68%
Dec 26	29°C	22°C	38°C 2012	18°C 2002	70%
Dec 27	29°C	22°C	35°C 2016	18°C 1992	70%
Dec 28	29°C	22°C	34°C 1997	18°C 1991	71%
Dec 29	29°C	22°C	33°C 2009	16°C 1991	72%
Dec 30	29°C	22°C	35°C 2020	17°C 1993	72%
Dec 31	29°C	22°C	35°C 2013	18°C 1993	71%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 5:13 AM, sunset 6:55 PM
December 31: sunrise 5:23 AM, sunset 7:12 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.