Rorainópolis Weather in December

NASA POWER reanalysis for the half-degree grid cell around Rorainópolis, 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 31°C on December 31, and lows from 24°C to 24°C. Normal precipitation for the month is 78 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: 30°C
Average low: 24°C
Precipitation: 78 mm
Reanalysis high: 40°CDec 4, 2017
Reanalysis low: 21°CDec 28, 2004
Daylight: 12 h 04 min to 12 h 04 min
Cloud cover: 63%
Humidity: 83%
Dew point: 23°C
Wind: 2.9 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	24°C	39°C 2015	22°C 1994	42%
Dec 2	31°C	24°C	39°C 2014	22°C 2004	42%
Dec 3	31°C	24°C	40°C 2017	21°C 2005	43%
Dec 4	31°C	24°C	40°C 2017	22°C 2003	44%
Dec 5	31°C	24°C	40°C 2017	22°C 1995	42%
Dec 6	31°C	24°C	38°C 2015	22°C 1996	41%
Dec 7	31°C	24°C	37°C 2017	22°C 2013	42%
Dec 8	31°C	24°C	38°C 2017	21°C 2007	43%
Dec 9	31°C	24°C	39°C 2015	22°C 2019	43%
Dec 10	31°C	24°C	38°C 2015	22°C 2008	44%
Dec 11	31°C	24°C	38°C 2015	21°C 1999	44%
Dec 12	30°C	24°C	38°C 2015	22°C 1996	45%
Dec 13	30°C	24°C	40°C 2015	22°C 1996	46%
Dec 14	30°C	24°C	39°C 2015	22°C 2000	49%
Dec 15	30°C	24°C	39°C 2015	21°C 2000	49%
Dec 16	30°C	24°C	37°C 2017	21°C 2000	50%
Dec 17	30°C	24°C	38°C 2017	22°C 2010	51%
Dec 18	30°C	24°C	39°C 2015	22°C 2000	51%
Dec 19	30°C	24°C	38°C 1997	22°C 2000	51%
Dec 20	30°C	24°C	37°C 1997	22°C 2010	52%
Dec 21	30°C	24°C	38°C 2014	21°C 2008	53%
Dec 22	30°C	24°C	37°C 2014	22°C 2000	53%
Dec 23	30°C	24°C	37°C 2015	22°C 1999	53%
Dec 24	30°C	24°C	38°C 2015	22°C 2010	52%
Dec 25	30°C	24°C	38°C 2015	21°C 1998	51%
Dec 26	30°C	24°C	39°C 2015	21°C 1998	50%
Dec 27	31°C	24°C	39°C 2014	22°C 1995	50%
Dec 28	31°C	24°C	39°C 2014	21°C 2004	49%
Dec 29	31°C	24°C	37°C 2014	21°C 2010	49%
Dec 30	31°C	24°C	38°C 2015	21°C 2010	48%
Dec 31	31°C	24°C	37°C 2009	21°C 2020	48%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-4).

December 1: sunrise 5:49 AM, sunset 5:53 PM
December 31: sunrise 6:03 AM, sunset 6:07 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.