Sepang Weather in December

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

Average highs run from 28°C on December 1 to 28°C on December 31, and lows from 27°C to 26°C. Normal precipitation for the month is 245 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: 28°C
Average low: 27°C
Precipitation: 245 mm
Reanalysis high: 30°CDec 31, 2019
Reanalysis low: 25°CDec 18, 1993
Daylight: 11 h 58 min to 11 h 58 min
Cloud cover: 88%
Humidity: 81%
Dew point: 24°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	28°C	27°C	29°C 2019	26°C 2007	90%
Dec 2	28°C	27°C	29°C 1992	25°C 1992	90%
Dec 3	28°C	27°C	30°C 2015	26°C 1992	89%
Dec 4	28°C	27°C	30°C 2019	26°C 2007	89%
Dec 5	28°C	27°C	30°C 2014	26°C 1995	89%
Dec 6	28°C	27°C	30°C 2016	26°C 2004	89%
Dec 7	28°C	27°C	30°C 2016	26°C 1995	88%
Dec 8	28°C	27°C	30°C 2015	26°C 2008	88%
Dec 9	28°C	27°C	30°C 1997	26°C 1995	88%
Dec 10	28°C	27°C	30°C 2009	26°C 1992	87%
Dec 11	28°C	27°C	29°C 2009	26°C 1992	88%
Dec 12	28°C	27°C	30°C 2014	26°C 1994	88%
Dec 13	28°C	27°C	29°C 2009	26°C 1994	88%
Dec 14	28°C	27°C	29°C 2004	26°C 1991	88%
Dec 15	28°C	27°C	30°C 2013	26°C 1992	88%
Dec 16	28°C	27°C	29°C 2004	25°C 1992	87%
Dec 17	28°C	27°C	29°C 2013	26°C 1992	87%
Dec 18	28°C	27°C	30°C 2013	25°C 1993	88%
Dec 19	28°C	27°C	30°C 2018	26°C 1992	88%
Dec 20	28°C	27°C	29°C 2019	26°C 2010	88%
Dec 21	28°C	27°C	30°C 2018	25°C 2014	87%
Dec 22	28°C	27°C	29°C 2015	26°C 2014	87%
Dec 23	28°C	27°C	29°C 2013	26°C 1995	86%
Dec 24	28°C	27°C	30°C 2002	25°C 1999	85%
Dec 25	28°C	27°C	29°C 2009	25°C 1999	85%
Dec 26	28°C	27°C	30°C 2015	25°C 1999	84%
Dec 27	28°C	27°C	30°C 2015	25°C 1999	84%
Dec 28	28°C	27°C	29°C 2017	25°C 1999	83%
Dec 29	28°C	27°C	30°C 2015	25°C 1996	82%
Dec 30	28°C	27°C	30°C 2015	25°C 1996	80%
Dec 31	28°C	26°C	30°C 2019	25°C 1996	79%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 7:03 AM, sunset 7:01 PM
December 31: sunrise 7:17 AM, sunset 7:15 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.