Ô Môn Weather in December

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

Average highs run from 30°C on December 1 to 31°C on December 31, and lows from 23°C to 22°C. Normal precipitation for the month is 43 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: 30°C
Average low: 22°C
Precipitation: 43 mm
Reanalysis high: 35°CDec 30, 2004
Reanalysis low: 15°CDec 24, 1999
Daylight: 11 h 35 min to 11 h 33 min
Cloud cover: 66%
Humidity: 83%
Dew point: 22°C
Wind: 12.6 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	30°C	23°C	33°C 2004	17°C 1992	38%
Dec 2	30°C	23°C	32°C 2004	19°C 1992	37%
Dec 3	30°C	23°C	33°C 2006	19°C 2007	35%
Dec 4	30°C	23°C	33°C 2006	19°C 2007	34%
Dec 5	30°C	22°C	32°C 2018	19°C 1995	32%
Dec 6	30°C	22°C	32°C 2004	18°C 2019	32%
Dec 7	30°C	22°C	32°C 2015	17°C 2019	33%
Dec 8	30°C	22°C	33°C 2014	18°C 2019	33%
Dec 9	30°C	22°C	33°C 2006	18°C 2019	33%
Dec 10	30°C	22°C	33°C 2014	20°C 2019	32%
Dec 11	30°C	22°C	33°C 2004	19°C 2011	31%
Dec 12	30°C	22°C	33°C 2004	18°C 2011	29%
Dec 13	30°C	22°C	33°C 2004	19°C 1998	28%
Dec 14	30°C	22°C	33°C 2015	19°C 1998	28%
Dec 15	30°C	22°C	33°C 2015	19°C 1998	28%
Dec 16	30°C	22°C	33°C 2006	19°C 1998	28%
Dec 17	30°C	22°C	33°C 2004	20°C 1992	27%
Dec 18	30°C	22°C	33°C 2004	18°C 2017	27%
Dec 19	30°C	22°C	34°C 2004	16°C 2017	27%
Dec 20	30°C	22°C	33°C 2004	17°C 2017	28%
Dec 21	30°C	22°C	32°C 2004	18°C 2017	26%
Dec 22	30°C	22°C	33°C 2004	18°C 1999	24%
Dec 23	30°C	22°C	33°C 2004	15°C 1999	22%
Dec 24	30°C	22°C	34°C 2009	15°C 1999	20%
Dec 25	30°C	22°C	33°C 2009	15°C 1999	20%
Dec 26	30°C	21°C	34°C 2006	16°C 1999	20%
Dec 27	30°C	21°C	33°C 2006	17°C 1999	20%
Dec 28	30°C	21°C	34°C 2014	16°C 1996	19%
Dec 29	30°C	22°C	34°C 2004	18°C 1996	17%
Dec 30	31°C	22°C	35°C 2004	17°C 1995	17%
Dec 31	31°C	22°C	34°C 2004	16°C 1995	15%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+7).

December 1: sunrise 5:59 AM, sunset 5:34 PM
December 31: sunrise 6:14 AM, sunset 5:47 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.