Passos Weather in December

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

Average highs run from 28°C on December 1 to 27°C on December 31, and lows from 18°C to 19°C. Normal precipitation for the month is 236 mm over about 25 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: 19°C
Precipitation: 236 mm
Reanalysis high: 33°CDec 1, 2020
Reanalysis low: 12°CDec 2, 2001
Daylight: 13 h 17 min to 13 h 23 min
Cloud cover: 80%
Humidity: 80%
Dew point: 19°C
Wind: 11.5 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	28°C	18°C	33°C 2020	14°C 1996	77%
Dec 2	28°C	19°C	32°C 2007	12°C 2001	78%
Dec 3	28°C	19°C	33°C 2007	14°C 2001	80%
Dec 4	27°C	19°C	33°C 2020	15°C 2008	81%
Dec 5	27°C	19°C	31°C 2013	16°C 1991	82%
Dec 6	27°C	19°C	33°C 2013	17°C 1995	84%
Dec 7	27°C	19°C	32°C 2012	17°C 2000	84%
Dec 8	27°C	19°C	31°C 2012	15°C 2005	83%
Dec 9	27°C	19°C	33°C 2008	14°C 2018	83%
Dec 10	27°C	19°C	33°C 2008	16°C 2018	83%
Dec 11	27°C	19°C	28°C 2010	16°C 2018	84%
Dec 12	27°C	19°C	31°C 2010	16°C 2004	85%
Dec 13	27°C	19°C	30°C 2010	15°C 2004	84%
Dec 14	27°C	19°C	30°C 2020	14°C 1992	84%
Dec 15	27°C	19°C	31°C 2020	15°C 1992	84%
Dec 16	27°C	19°C	31°C 2003	15°C 2016	82%
Dec 17	27°C	19°C	30°C 1993	16°C 1999	82%
Dec 18	27°C	19°C	31°C 2020	16°C 2013	82%
Dec 19	27°C	19°C	30°C 2020	15°C 2000	82%
Dec 20	27°C	19°C	30°C 2002	16°C 1998	82%
Dec 21	27°C	19°C	31°C 2012	16°C 2008	81%
Dec 22	27°C	19°C	30°C 2019	15°C 1993	82%
Dec 23	27°C	19°C	30°C 1997	15°C 1993	83%
Dec 24	27°C	19°C	30°C 1997	16°C 1992	84%
Dec 25	27°C	19°C	32°C 2012	16°C 1993	84%
Dec 26	27°C	19°C	33°C 2012	17°C 1993	84%
Dec 27	27°C	19°C	30°C 2013	16°C 2007	84%
Dec 28	27°C	19°C	31°C 2014	16°C 1992	84%
Dec 29	27°C	19°C	30°C 2019	17°C 2005	84%
Dec 30	27°C	19°C	30°C 2016	16°C 2007	82%
Dec 31	27°C	19°C	31°C 2019	17°C 1991	83%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 5:17 AM, sunset 6:34 PM
December 31: sunrise 5:28 AM, sunset 6:51 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.