Boa Vista Weather in December

NASA POWER reanalysis for the half-degree grid cell around Boa Vista, 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 34°C on December 31, and lows from 24°C to 24°C. Normal precipitation for the month is 50 mm over about 9 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: 34°C
Average low: 24°C
Precipitation: 50 mm
Reanalysis high: 40°CDec 3, 2017
Reanalysis low: 19°CDec 29, 1993
Daylight: 11 h 58 min to 11 h 58 min
Cloud cover: 58%
Humidity: 68%
Dew point: 21°C
Wind: 13.0 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	39°C 2015	22°C 2008	25%
Dec 2	34°C	24°C	38°C 2017	21°C 2013	25%
Dec 3	34°C	24°C	40°C 2017	21°C 1994	26%
Dec 4	34°C	24°C	40°C 2017	22°C 1994	26%
Dec 5	34°C	24°C	39°C 2017	22°C 1999	26%
Dec 6	34°C	24°C	39°C 2017	21°C 1999	25%
Dec 7	34°C	24°C	39°C 2016	22°C 2008	24%
Dec 8	34°C	24°C	39°C 2015	22°C 2010	25%
Dec 9	34°C	24°C	39°C 2015	22°C 2000	27%
Dec 10	34°C	24°C	39°C 2015	22°C 1994	28%
Dec 11	34°C	24°C	39°C 2015	22°C 1994	29%
Dec 12	34°C	24°C	39°C 2015	22°C 2000	28%
Dec 13	34°C	24°C	39°C 2017	20°C 2000	28%
Dec 14	34°C	24°C	38°C 2017	21°C 2000	29%
Dec 15	34°C	24°C	38°C 2015	21°C 2000	30%
Dec 16	34°C	24°C	38°C 2015	20°C 2000	31%
Dec 17	34°C	24°C	39°C 2015	22°C 2000	32%
Dec 18	34°C	24°C	38°C 2015	21°C 2000	32%
Dec 19	34°C	24°C	38°C 2015	21°C 2000	33%
Dec 20	34°C	24°C	38°C 2018	22°C 2000	34%
Dec 21	34°C	24°C	38°C 1997	22°C 1999	35%
Dec 22	34°C	24°C	38°C 2014	22°C 1994	35%
Dec 23	34°C	24°C	38°C 1997	22°C 1995	35%
Dec 24	34°C	24°C	38°C 2015	21°C 2010	33%
Dec 25	34°C	24°C	38°C 2014	21°C 1998	32%
Dec 26	34°C	24°C	38°C 1992	21°C 1995	31%
Dec 27	34°C	24°C	39°C 2014	22°C 2008	31%
Dec 28	34°C	24°C	38°C 2015	21°C 1999	31%
Dec 29	34°C	24°C	37°C 2002	19°C 1993	30%
Dec 30	34°C	24°C	38°C 1992	20°C 1993	29%
Dec 31	34°C	24°C	38°C 1997	22°C 1999	29%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 5:53 AM, sunset 5:51 PM
December 31: sunrise 6:07 AM, sunset 6:05 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.