Hạ Long Weather in December

NASA POWER reanalysis for the half-degree grid cell around Hạ Long, 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 16°C to 13°C. Normal precipitation for the month is 28 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: 21°C
Average low: 14°C
Precipitation: 28 mm
Reanalysis high: 28°CDec 7, 2002
Reanalysis low: 3°CDec 23, 1999
Daylight: 10 h 57 min to 10 h 53 min
Cloud cover: 63%
Humidity: 76%
Dew point: 13°C
Wind: 14.0 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	16°C	28°C 1998	11°C 1999	19%
Dec 2	23°C	15°C	28°C 2015	9°C 2011	19%
Dec 3	23°C	15°C	28°C 1993	10°C 2019	18%
Dec 4	23°C	15°C	28°C 2018	10°C 2020	17%
Dec 5	22°C	15°C	27°C 2002	9°C 2020	16%
Dec 6	22°C	15°C	28°C 2018	8°C 2005	16%
Dec 7	22°C	15°C	28°C 2002	8°C 2019	17%
Dec 8	22°C	14°C	28°C 2006	9°C 2019	18%
Dec 9	22°C	14°C	26°C 1994	9°C 2002	17%
Dec 10	22°C	14°C	26°C 1994	9°C 2011	16%
Dec 11	22°C	14°C	27°C 1994	7°C 2011	15%
Dec 12	21°C	14°C	27°C 1994	8°C 2011	14%
Dec 13	21°C	14°C	27°C 2015	8°C 2014	14%
Dec 14	21°C	14°C	27°C 2009	8°C 2001	13%
Dec 15	21°C	14°C	27°C 2009	8°C 2010	12%
Dec 16	21°C	13°C	27°C 2012	5°C 2010	12%
Dec 17	21°C	13°C	26°C 2012	6°C 2013	12%
Dec 18	21°C	13°C	26°C 2002	6°C 2013	12%
Dec 19	21°C	13°C	26°C 1997	5°C 2013	12%
Dec 20	21°C	13°C	26°C 1998	5°C 2013	13%
Dec 21	21°C	13°C	27°C 2018	6°C 1999	13%
Dec 22	21°C	13°C	27°C 1998	4°C 1999	13%
Dec 23	21°C	13°C	26°C 1998	3°C 1999	13%
Dec 24	21°C	13°C	27°C 2015	5°C 1999	13%
Dec 25	21°C	13°C	27°C 1991	6°C 1999	13%
Dec 26	21°C	13°C	26°C 1991	5°C 2002	14%
Dec 27	21°C	13°C	25°C 1991	3°C 2002	15%
Dec 28	21°C	13°C	25°C 2000	4°C 1991	16%
Dec 29	21°C	13°C	25°C 1997	5°C 1991	17%
Dec 30	21°C	13°C	25°C 1993	6°C 2018	17%
Dec 31	21°C	13°C	25°C 1997	5°C 2018	17%

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 5:09 PM
December 31: sunrise 6:28 AM, sunset 5:21 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.