Simunjan Weather in December

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

Average highs run from 29°C on December 1 to 29°C on December 31, and lows from 24°C to 24°C. Normal precipitation for the month is 419 mm over about 28 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: 29°C
Average low: 24°C
Precipitation: 419 mm
Reanalysis high: 32°CDec 22, 2015
Reanalysis low: 22°CDec 29, 1996
Daylight: 12 h 03 min to 12 h 03 min
Cloud cover: 89%
Humidity: 91%
Dew point: 24°C
Wind: 3.6 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	29°C	24°C	31°C 2020	23°C 2001	96%
Dec 2	29°C	24°C	31°C 2017	23°C 2007	95%
Dec 3	29°C	24°C	31°C 2018	23°C 2011	96%
Dec 4	29°C	24°C	31°C 2019	22°C 2011	95%
Dec 5	29°C	24°C	31°C 2002	23°C 2011	94%
Dec 6	29°C	24°C	30°C 2012	23°C 2014	94%
Dec 7	29°C	24°C	31°C 2002	23°C 1992	92%
Dec 8	29°C	24°C	30°C 2015	23°C 1992	92%
Dec 9	29°C	24°C	31°C 1997	23°C 2001	92%
Dec 10	29°C	24°C	31°C 2000	23°C 2001	92%
Dec 11	29°C	24°C	31°C 2000	23°C 1991	91%
Dec 12	29°C	24°C	30°C 2003	23°C 2016	91%
Dec 13	29°C	24°C	30°C 2001	23°C 2001	91%
Dec 14	29°C	24°C	31°C 2001	23°C 1991	91%
Dec 15	29°C	24°C	30°C 2011	22°C 2000	92%
Dec 16	29°C	24°C	30°C 1994	23°C 2001	92%
Dec 17	29°C	24°C	31°C 2001	23°C 2010	93%
Dec 18	29°C	24°C	30°C 2006	23°C 2017	92%
Dec 19	29°C	24°C	31°C 2016	23°C 1992	92%
Dec 20	29°C	24°C	30°C 2002	23°C 2003	93%
Dec 21	29°C	24°C	30°C 2002	23°C 2015	93%
Dec 22	29°C	24°C	32°C 2015	23°C 2007	94%
Dec 23	29°C	24°C	31°C 2009	23°C 2001	93%
Dec 24	29°C	24°C	31°C 2002	23°C 2010	94%
Dec 25	29°C	24°C	30°C 2019	23°C 1992	93%
Dec 26	28°C	24°C	31°C 2006	23°C 2010	94%
Dec 27	29°C	24°C	30°C 2012	23°C 1997	93%
Dec 28	29°C	24°C	31°C 2012	23°C 1996	92%
Dec 29	29°C	24°C	30°C 2003	22°C 1996	92%
Dec 30	29°C	24°C	30°C 1999	22°C 1996	92%
Dec 31	29°C	24°C	31°C 2011	22°C 1996	92%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+8).

December 1: sunrise 6:24 AM, sunset 6:27 PM
December 31: sunrise 6:38 AM, sunset 6:41 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.