Ilhéus Weather in December

NASA POWER reanalysis for the half-degree grid cell around Ilhéus, 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 28°C on December 31, and lows from 25°C to 26°C. Normal precipitation for the month is 99 mm over about 16 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: 27°C
Average low: 25°C
Precipitation: 99 mm
Reanalysis high: 29°CDec 27, 1997
Reanalysis low: 23°CDec 9, 1992
Daylight: 12 h 56 min to 13 h 00 min
Cloud cover: 56%
Humidity: 79%
Dew point: 22°C
Wind: 15.1 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	25°C	28°C 2019	24°C 1996	56%
Dec 2	27°C	25°C	29°C 2019	24°C 1999	56%
Dec 3	27°C	25°C	29°C 2019	24°C 2014	54%
Dec 4	27°C	25°C	29°C 2015	24°C 2014	54%
Dec 5	27°C	25°C	29°C 2015	24°C 1992	54%
Dec 6	27°C	25°C	28°C 2015	23°C 1992	53%
Dec 7	27°C	25°C	29°C 2019	24°C 2012	51%
Dec 8	27°C	25°C	29°C 2006	24°C 1992	52%
Dec 9	27°C	25°C	28°C 2003	23°C 1992	52%
Dec 10	27°C	25°C	28°C 2002	24°C 1992	52%
Dec 11	27°C	25°C	28°C 2019	25°C 2014	51%
Dec 12	27°C	25°C	28°C 2015	25°C 2001	51%
Dec 13	27°C	25°C	28°C 2015	24°C 2000	51%
Dec 14	27°C	25°C	29°C 2015	23°C 1992	52%
Dec 15	27°C	25°C	28°C 2015	24°C 1992	51%
Dec 16	27°C	26°C	28°C 2009	24°C 1992	50%
Dec 17	27°C	26°C	28°C 2009	24°C 1992	49%
Dec 18	27°C	26°C	28°C 2009	24°C 1992	50%
Dec 19	27°C	26°C	29°C 2009	25°C 1992	49%
Dec 20	27°C	26°C	29°C 2009	24°C 2017	49%
Dec 21	27°C	26°C	28°C 2002	24°C 2017	49%
Dec 22	28°C	26°C	28°C 2003	24°C 2011	50%
Dec 23	28°C	26°C	28°C 2009	24°C 1992	50%
Dec 24	28°C	26°C	29°C 2002	24°C 1992	50%
Dec 25	28°C	26°C	29°C 2015	24°C 1992	49%
Dec 26	28°C	26°C	28°C 2015	25°C 1992	48%
Dec 27	28°C	26°C	29°C 1997	24°C 2007	47%
Dec 28	28°C	26°C	29°C 2009	24°C 2017	46%
Dec 29	28°C	26°C	29°C 2009	25°C 2019	47%
Dec 30	28°C	26°C	29°C 2015	25°C 2019	48%
Dec 31	28°C	26°C	29°C 2009	25°C 2007	50%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 4:57 AM, sunset 5:53 PM
December 31: sunrise 5:09 AM, sunset 6:09 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.