Postmasburg Weather in December

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

Average highs run from 32°C on December 1 to 34°C on December 31, and lows from 15°C to 17°C. Normal precipitation for the month is 47 mm over about 6 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: 33°C
Average low: 16°C
Precipitation: 47 mm
Reanalysis high: 39°CDec 6, 2015
Reanalysis low: 5°CDec 27, 2003
Daylight: 13 h 48 min to 13 h 55 min
Cloud cover: 45%
Humidity: 31%
Dew point: 3°C
Wind: 16.6 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	32°C	15°C	38°C 2015	6°C 1995	22%
Dec 2	32°C	15°C	36°C 2016	9°C 1995	24%
Dec 3	32°C	15°C	38°C 2016	8°C 1996	25%
Dec 4	32°C	15°C	39°C 2016	10°C 1996	25%
Dec 5	32°C	15°C	38°C 2015	8°C 1991	25%
Dec 6	32°C	15°C	39°C 2015	12°C 2001	24%
Dec 7	32°C	16°C	38°C 2008	13°C 1993	23%
Dec 8	32°C	16°C	37°C 2008	11°C 1998	23%
Dec 9	32°C	16°C	38°C 1997	11°C 2018	23%
Dec 10	33°C	16°C	39°C 1997	11°C 2006	22%
Dec 11	33°C	16°C	39°C 1997	9°C 2011	22%
Dec 12	33°C	16°C	39°C 1997	9°C 2011	22%
Dec 13	33°C	16°C	39°C 1997	11°C 2005	21%
Dec 14	33°C	16°C	38°C 2018	11°C 2011	21%
Dec 15	33°C	16°C	39°C 2006	7°C 2011	20%
Dec 16	33°C	16°C	38°C 2006	9°C 2019	20%
Dec 17	33°C	16°C	38°C 2016	9°C 1997	20%
Dec 18	33°C	16°C	39°C 2016	8°C 1996	19%
Dec 19	33°C	16°C	39°C 2016	9°C 1996	19%
Dec 20	33°C	16°C	39°C 2015	12°C 2005	19%
Dec 21	33°C	16°C	39°C 1994	12°C 1991	19%
Dec 22	33°C	17°C	38°C 2018	13°C 1998	22%
Dec 23	33°C	17°C	38°C 2018	12°C 2017	23%
Dec 24	33°C	17°C	38°C 2018	11°C 1994	23%
Dec 25	33°C	17°C	37°C 2014	9°C 1994	23%
Dec 26	33°C	17°C	38°C 2018	7°C 2003	23%
Dec 27	33°C	17°C	38°C 2010	5°C 2003	24%
Dec 28	33°C	17°C	38°C 2010	12°C 1994	24%
Dec 29	33°C	17°C	37°C 2014	11°C 2008	24%
Dec 30	33°C	17°C	39°C 2012	11°C 2008	25%
Dec 31	34°C	17°C	37°C 1995	9°C 2006	25%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+2).

December 1: sunrise 5:23 AM, sunset 7:11 PM
December 31: sunrise 5:33 AM, sunset 7:28 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.