Sầm Sơn Weather in December

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

Average highs run from 23°C on December 1 to 21°C on December 31, and lows from 21°C to 19°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: 22°C
Average low: 20°C
Precipitation: 43 mm
Reanalysis high: 27°CDec 2, 2015
Reanalysis low: 10°CDec 28, 1991
Daylight: 11 h 02 min to 10 h 58 min
Cloud cover: 74%
Humidity: 79%
Dew point: 17°C
Wind: 22.3 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	23°C	21°C	26°C 2015	18°C 2011	32%
Dec 2	23°C	21°C	27°C 2015	17°C 2011	31%
Dec 3	23°C	21°C	26°C 2018	18°C 2000	30%
Dec 4	23°C	21°C	26°C 2018	17°C 2000	29%
Dec 5	23°C	21°C	26°C 2018	18°C 1999	28%
Dec 6	23°C	21°C	26°C 2018	15°C 2005	29%
Dec 7	22°C	21°C	26°C 2018	15°C 2005	30%
Dec 8	22°C	20°C	26°C 2006	17°C 2002	31%
Dec 9	22°C	20°C	24°C 2006	16°C 2002	31%
Dec 10	22°C	20°C	25°C 1994	16°C 2011	30%
Dec 11	22°C	20°C	25°C 1994	16°C 2011	29%
Dec 12	22°C	20°C	25°C 2015	16°C 2018	29%
Dec 13	22°C	20°C	26°C 2015	16°C 2000	28%
Dec 14	22°C	20°C	25°C 2015	15°C 2001	27%
Dec 15	22°C	20°C	25°C 2012	15°C 2010	25%
Dec 16	21°C	20°C	25°C 2012	12°C 2010	25%
Dec 17	21°C	20°C	25°C 2012	13°C 1993	24%
Dec 18	21°C	20°C	25°C 2002	15°C 2013	23%
Dec 19	21°C	19°C	25°C 2002	15°C 2013	23%
Dec 20	21°C	19°C	25°C 2002	14°C 2013	24%
Dec 21	21°C	19°C	25°C 2018	15°C 2013	23%
Dec 22	21°C	19°C	25°C 2018	13°C 1999	23%
Dec 23	21°C	19°C	24°C 1998	13°C 1999	22%
Dec 24	21°C	19°C	25°C 2015	14°C 1992	21%
Dec 25	21°C	19°C	24°C 2019	15°C 1992	21%
Dec 26	21°C	19°C	24°C 2018	13°C 2002	20%
Dec 27	21°C	19°C	24°C 1991	11°C 1991	20%
Dec 28	21°C	19°C	24°C 1997	10°C 1991	21%
Dec 29	21°C	19°C	24°C 1997	13°C 1991	22%
Dec 30	21°C	19°C	24°C 1997	14°C 2012	23%
Dec 31	21°C	19°C	24°C 1997	13°C 2004	23%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 6:14 AM, sunset 5:16 PM
December 31: sunrise 6:30 AM, sunset 5:28 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.