Ishii Weather in December
Average highs run from 15°C on December 1 to 10°C on December 31, and lows from to . Normal precipitation for the month is 65 mm over about 6 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
- 13°C
- Precipitation
- 65 mm
- Record high
- 27°CDec 4, 2018
- Record low
- -4°CDec 31, 1967
- Daylight
- 10 h 04 min to 9 h 56 min
- Cloud cover
- 73%
- Humidity
- 83%
- Dew point
- 2°C
- Wind
- 11.2 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 | 15°C | 20°C 1990 | 1°C 1963 | 26% | |
| Dec 2 | 22°C 1952 | 0°C 1965 | 26% | ||
| Dec 3 | 15°C | 21°C 1993 | 1°C 1966 | 26% | |
| Dec 4 | 15°C | 27°C 2018 | 1°C 1969 | 27% | |
| Dec 5 | 15°C | 20°C 1971 | -1°C 1973 | 26% | |
| Dec 6 | 13°C | 20°C 2003 | 2°C 1952 | 26% | |
| Dec 7 | 13°C | 21°C 1994 | 0°C 1996 | 26% | |
| Dec 8 | 13°C | 18°C 1963 | -1°C 1967 | 25% | |
| Dec 9 | 13°C | 19°C 1978 | -3°C 1967 | 24% | |
| Dec 10 | 13°C | 20°C 1968 | -1°C 1967 | 25% | |
| Dec 11 | 13°C | 22°C 1982 | 0°C 1971 | 24% | |
| Dec 12 | 13°C | 20°C 2009 | 1°C 1967 | 22% | |
| Dec 13 | 13°C | 20°C 1961 | -1°C 1967 | 22% | |
| Dec 14 | 13°C | 19°C 1959 | -1°C 1973 | 23% | |
| Dec 15 | 13°C | 20°C 1955 | 0°C 1985 | 23% | |
| Dec 16 | 13°C | 18°C 2000 | -1°C 1985 | 22% | |
| Dec 17 | 12°C | 18°C 1977 | -1°C 1965 | 21% | |
| Dec 18 | 12°C | 18°C 1970 | 0°C 1985 | 20% | |
| Dec 19 | 12°C | 17°C 1979 | -1°C 2022 | 20% | |
| Dec 20 | 12°C | 4°C | 19°C 1979 | -1°C 1955 | 19% |
| Dec 21 | 12°C | 20°C 2008 | -1°C 1969 | 20% | |
| Dec 22 | 13°C | 22°C 2016 | -1°C 1973 | 20% | |
| Dec 23 | 13°C | 18°C 1951 | -1°C 1973 | 20% | |
| Dec 24 | 12°C | 17°C 1964 | -1°C 1973 | 20% | |
| Dec 25 | 12°C | 16°C 2003 | -1°C 1956 | 19% | |
| Dec 26 | 11°C | 17°C 1987 | 0°C 1976 | 18% | |
| Dec 27 | 11°C | 17°C 1987 | -2°C 1976 | 18% | |
| Dec 28 | 12°C | 17°C 2010 | -2°C 1980 | 18% | |
| Dec 29 | 11°C | 17°C 1987 | -3°C 1969 | 16% | |
| Dec 30 | 11°C | 19°C 1985 | -3°C 1967 | 17% | |
| Dec 31 | 10°C | 18°C 1959 | -4°C 1967 | 17% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+9).
- December 1
- sunrise 6:49 AM, sunset 4:53 PM
- December 31
- sunrise 7:07 AM, sunset 5:03 PM
Other months
Sources
Records: NOAA GHCN-Daily, station JA000047895, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.