Northam Weather in December

NASA POWER reanalysis for the half-degree grid cell around Northam, 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 33°C on December 31, and lows from 18°C to 19°C. Normal precipitation for the month is 99 mm over about 19 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: 19°C
Precipitation: 99 mm
Reanalysis high: 41°CDec 7, 2015
Reanalysis low: 8°CDec 1, 1995
Daylight: 13 h 34 min to 13 h 40 min
Cloud cover: 65%
Humidity: 54%
Dew point: 14°C
Wind: 10.4 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	18°C	39°C 2016	8°C 1995	53%
Dec 2	32°C	18°C	40°C 2018	11°C 1995	54%
Dec 3	32°C	18°C	39°C 2019	14°C 1998	55%
Dec 4	32°C	18°C	40°C 2018	9°C 1998	57%
Dec 5	32°C	18°C	40°C 2018	11°C 1998	58%
Dec 6	32°C	18°C	39°C 2015	13°C 1998	58%
Dec 7	32°C	18°C	41°C 2015	15°C 1998	58%
Dec 8	32°C	18°C	38°C 2015	14°C 2017	58%
Dec 9	32°C	18°C	39°C 2003	15°C 2017	59%
Dec 10	32°C	18°C	40°C 2015	14°C 1995	60%
Dec 11	32°C	18°C	39°C 2003	14°C 2018	60%
Dec 12	32°C	18°C	39°C 2003	12°C 2005	60%
Dec 13	32°C	18°C	39°C 2018	12°C 1994	59%
Dec 14	32°C	18°C	39°C 2003	12°C 2017	60%
Dec 15	33°C	18°C	40°C 2006	15°C 1999	60%
Dec 16	33°C	18°C	38°C 2018	13°C 2019	60%
Dec 17	33°C	19°C	38°C 2003	15°C 1998	59%
Dec 18	33°C	19°C	39°C 2009	15°C 1997	58%
Dec 19	33°C	19°C	39°C 2015	13°C 2007	58%
Dec 20	33°C	19°C	40°C 2018	14°C 2007	60%
Dec 21	33°C	19°C	39°C 2015	15°C 2001	60%
Dec 22	33°C	19°C	41°C 2015	16°C 1991	61%
Dec 23	33°C	19°C	37°C 2015	16°C 1991	62%
Dec 24	33°C	19°C	40°C 2015	16°C 1998	63%
Dec 25	33°C	19°C	39°C 2018	13°C 1994	63%
Dec 26	33°C	19°C	41°C 2018	14°C 1992	63%
Dec 27	33°C	19°C	39°C 2018	14°C 1992	62%
Dec 28	33°C	19°C	36°C 2017	16°C 2001	62%
Dec 29	33°C	19°C	38°C 2015	15°C 1995	61%
Dec 30	33°C	19°C	38°C 2020	15°C 2007	60%
Dec 31	33°C	19°C	38°C 2017	14°C 2007	58%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 5:13 AM, sunset 6:47 PM
December 31: sunrise 5:24 AM, sunset 7:04 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.