Katsuren-haebaru Weather in December

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

Average highs run from 22°C on December 1 to 20°C on December 31, and lows from 20°C to 18°C. Normal precipitation for the month is 74 mm over about 12 wet days.

December day by day

The normal high and low for each date, and the record, in °C.

Normal low
Normal high
Record high
Record low

December at a glance

Average high: 21°C
Average low: 19°C
Precipitation: 74 mm
Record high: 28°CDec 3, 1993
Record low: 8°CDec 30, 1960
Daylight: 10 h 37 min to 10 h 31 min
Cloud cover: 77%
Humidity: 74%
Dew point: 15°C
Wind: 25.9 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	Record high	Record low	Chance wet
Dec 1	22°C	20°C	26°C 1974	13°C 1966	40%
Dec 2	22°C	20°C	27°C 1970	11°C 1981	40%
Dec 3	22°C	20°C	28°C 1993	12°C 1981	40%
Dec 4	22°C	20°C	27°C 1978	13°C 1981	40%
Dec 5	22°C	20°C	26°C 1979	13°C 1964	39%
Dec 6	22°C	20°C	26°C 1985	13°C 1963	39%
Dec 7	22°C	20°C	27°C 2002	12°C 1987	38%
Dec 8	22°C	20°C	26°C 1978	12°C 1967	39%
Dec 9	22°C	20°C	27°C 1990	12°C 1967	40%
Dec 10	21°C	19°C	26°C 1978	12°C 1967	41%
Dec 11	21°C	19°C	27°C 1994	12°C 1967	41%
Dec 12	21°C	19°C	26°C 1994	11°C 1967	41%
Dec 13	21°C	19°C	25°C 1993	11°C 1980	41%
Dec 14	21°C	19°C	25°C 1983	11°C 1980	41%
Dec 15	21°C	19°C	24°C 1995	11°C 1980	42%
Dec 16	21°C	19°C	26°C 1977	9°C 1985	42%
Dec 17	21°C	19°C	26°C 1996	11°C 1968	42%
Dec 18	21°C	19°C	24°C 2002	12°C 1965	43%
Dec 19	21°C	19°C	25°C 1979	12°C 1962	43%
Dec 20	21°C	18°C	25°C 1965	11°C 1967	43%
Dec 21	20°C	18°C	26°C 1979	11°C 1981	43%
Dec 22	20°C	18°C	26°C 1976	10°C 2005	43%
Dec 23	20°C	18°C	25°C 1991	10°C 1963	42%
Dec 24	20°C	18°C	25°C 1991	9°C 1968	41%
Dec 25	20°C	18°C	26°C 1991	10°C 1984	39%
Dec 26	20°C	18°C	25°C 1968	11°C 1973	38%
Dec 27	20°C	18°C	27°C 1987	10°C 1976	38%
Dec 28	20°C	18°C	26°C 1987	10°C 1967	39%
Dec 29	20°C	18°C	26°C 1968	9°C 1967	40%
Dec 30	20°C	18°C	26°C 1968	8°C 1960	41%
Dec 31	20°C	18°C	24°C 1986	9°C 1960	41%

Chance of rain

Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT+9).

December 1: sunrise 6:59 AM, sunset 5:36 PM
December 31: sunrise 7:16 AM, sunset 5:47 PM

Every day of December: sun and moon

Other months

Sources

Records: NOAA GHCN-Daily, station JAW00042215, every year on file, quality-flagged values removed. 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.