Smach Mean Chey Weather in December

NASA POWER reanalysis for the half-degree grid cell around Smach Mean Chey, 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 27°C on December 31, and lows from 23°C to 22°C. Normal precipitation for the month is 34 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: 28°C
Average low: 23°C
Precipitation: 34 mm
Reanalysis high: 30°CDec 14, 2015
Reanalysis low: 14°CDec 25, 1999
Daylight: 11 h 30 min to 11 h 28 min
Cloud cover: 60%
Humidity: 80%
Dew point: 21°C
Wind: 6.1 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	23°C	30°C 2006	18°C 1992	29%
Dec 2	28°C	23°C	30°C 2018	19°C 1992	28%
Dec 3	28°C	23°C	30°C 2018	19°C 1992	27%
Dec 4	28°C	23°C	29°C 1993	20°C 2007	26%
Dec 5	28°C	23°C	30°C 2018	21°C 1995	27%
Dec 6	28°C	23°C	30°C 2018	19°C 2019	27%
Dec 7	28°C	23°C	30°C 1997	19°C 2019	28%
Dec 8	28°C	23°C	29°C 2015	19°C 2019	27%
Dec 9	28°C	23°C	30°C 2015	20°C 2019	27%
Dec 10	28°C	23°C	30°C 2015	20°C 2019	26%
Dec 11	28°C	23°C	29°C 2015	19°C 2011	24%
Dec 12	28°C	23°C	30°C 2015	18°C 2011	23%
Dec 13	28°C	23°C	30°C 2015	19°C 1998	22%
Dec 14	28°C	23°C	30°C 2015	19°C 1998	21%
Dec 15	28°C	23°C	30°C 2015	18°C 1998	20%
Dec 16	28°C	22°C	29°C 2012	19°C 1998	20%
Dec 17	28°C	22°C	30°C 2012	19°C 2010	19%
Dec 18	28°C	22°C	30°C 2012	19°C 1993	19%
Dec 19	28°C	22°C	29°C 2016	17°C 2017	18%
Dec 20	27°C	22°C	29°C 2018	17°C 2017	18%
Dec 21	27°C	22°C	30°C 2016	18°C 2017	18%
Dec 22	27°C	22°C	30°C 2018	18°C 1999	16%
Dec 23	27°C	22°C	29°C 2016	16°C 1999	15%
Dec 24	27°C	22°C	29°C 2016	16°C 1999	14%
Dec 25	27°C	22°C	29°C 2015	14°C 1999	14%
Dec 26	27°C	22°C	29°C 2016	16°C 1999	14%
Dec 27	27°C	22°C	29°C 2015	16°C 1999	13%
Dec 28	27°C	22°C	29°C 2017	18°C 1993	14%
Dec 29	27°C	22°C	29°C 2012	19°C 2013	14%
Dec 30	27°C	22°C	29°C 2017	18°C 1995	14%
Dec 31	27°C	22°C	29°C 2019	18°C 1995	14%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 6:12 AM, sunset 5:42 PM
December 31: sunrise 6:27 AM, sunset 5:55 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.