Haikou Weather in December

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

Average highs run from 24°C on December 1 to 22°C on December 31, and lows from 20°C to 18°C. Normal precipitation for the month is 47 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: 22°C
Average low: 19°C
Precipitation: 47 mm
Reanalysis high: 29°CDec 7, 2002
Reanalysis low: 11°CDec 23, 1999
Daylight: 11 h 01 min to 10 h 57 min
Cloud cover: 65%
Humidity: 80%
Dew point: 17°C
Wind: 21.6 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	24°C	20°C	28°C 1998	17°C 2013	24%
Dec 2	24°C	20°C	28°C 2015	16°C 2011	24%
Dec 3	24°C	20°C	27°C 2018	16°C 2011	23%
Dec 4	23°C	20°C	27°C 2018	16°C 2020	23%
Dec 5	23°C	20°C	27°C 2002	17°C 2020	22%
Dec 6	23°C	20°C	28°C 2002	15°C 2005	21%
Dec 7	23°C	20°C	29°C 2002	16°C 2005	22%
Dec 8	23°C	19°C	26°C 2006	15°C 2019	24%
Dec 9	23°C	19°C	26°C 1994	15°C 2019	25%
Dec 10	23°C	19°C	27°C 1994	15°C 2011	25%
Dec 11	23°C	19°C	27°C 1994	14°C 2011	24%
Dec 12	22°C	19°C	28°C 1994	15°C 2011	24%
Dec 13	22°C	19°C	27°C 2010	16°C 2014	24%
Dec 14	22°C	19°C	27°C 1992	16°C 1998	23%
Dec 15	22°C	19°C	27°C 2012	16°C 2013	23%
Dec 16	22°C	19°C	27°C 2012	12°C 2010	22%
Dec 17	22°C	18°C	26°C 2002	13°C 2010	22%
Dec 18	22°C	18°C	27°C 2002	12°C 2013	22%
Dec 19	22°C	18°C	27°C 2002	13°C 2013	22%
Dec 20	22°C	18°C	27°C 2002	13°C 2013	23%
Dec 21	22°C	18°C	26°C 1997	13°C 1999	23%
Dec 22	22°C	18°C	26°C 2015	12°C 1999	22%
Dec 23	22°C	18°C	27°C 2015	11°C 1999	21%
Dec 24	22°C	18°C	28°C 2015	12°C 1999	20%
Dec 25	22°C	18°C	26°C 1991	13°C 2011	19%
Dec 26	22°C	18°C	25°C 1991	13°C 1999	19%
Dec 27	22°C	18°C	26°C 1991	14°C 2013	19%
Dec 28	22°C	18°C	25°C 1997	11°C 1991	20%
Dec 29	22°C	18°C	26°C 1997	12°C 1991	22%
Dec 30	22°C	18°C	26°C 1992	12°C 2012	21%
Dec 31	22°C	18°C	25°C 1997	12°C 2004	22%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

December 1: sunrise 6:57 AM, sunset 5:58 PM
December 31: sunrise 7:13 AM, sunset 6:10 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.