Nishi-Tokyo-shi Weather in May
Average highs run from 20°C on May 1 to 24°C on May 31, and lows from 10°C to 14°C. Normal precipitation for the month is 140 mm over about 12 wet days.
May day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 22°C
- Average low
- 12°C
- Precipitation
- 140 mm
- Record high
- 32°CMay 31, 1958
- Record low
- 3°CMay 3, 1953
- Daylight
- 13 h 38 min to 14 h 24 min
- Cloud cover
- 70%
- Humidity
- 79%
- 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 | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 20°C | 10°C | 27°C 1967 | 6°C 1956 | 33% |
| May 2 | 20°C | 10°C | 28°C 1954 | 4°C 1953 | 33% |
| May 3 | 21°C | 10°C | 26°C 1952 | 3°C 1953 | 32% |
| May 4 | 21°C | 10°C | 28°C 1959 | 4°C 1949 | 34% |
| May 5 | 21°C | 10°C | 31°C 1959 | 4°C 1966 | 34% |
| May 6 | 21°C | 11°C | 28°C 1956 | 8°C 1952 | 35% |
| May 7 | 21°C | 11°C | 25°C 1964 | 7°C 1951 | 36% |
| May 8 | 21°C | 11°C | 29°C 1966 | 6°C 1959 | 37% |
| May 9 | 21°C | 11°C | 26°C 1957 | 7°C 1949 | 37% |
| May 10 | 21°C | 11°C | 28°C 1966 | 7°C 1960 | 37% |
| May 11 | 22°C | 11°C | 32°C 1956 | 7°C 1960 | 37% |
| May 12 | 22°C | 11°C | 28°C 1961 | 6°C 1960 | 38% |
| May 13 | 22°C | 12°C | 27°C 1949 | 4°C 1958 | 40% |
| May 14 | 22°C | 12°C | 27°C 1963 | 6°C 1958 | 40% |
| May 15 | 22°C | 12°C | 28°C 1950 | 8°C 1957 | 41% |
| May 16 | 22°C | 12°C | 28°C 1964 | 8°C 1949 | 42% |
| May 17 | 22°C | 12°C | 27°C 1950 | 6°C 1956 | 42% |
| May 18 | 22°C | 12°C | 28°C 1957 | 6°C 1966 | 42% |
| May 19 | 23°C | 12°C | 29°C 1950 | 10°C 1966 | 42% |
| May 20 | 23°C | 13°C | 32°C 2025 | 9°C 1951 | 42% |
| May 21 | 23°C | 13°C | 30°C 2025 | 8°C 1949 | 41% |
| May 22 | 23°C | 13°C | 31°C 1963 | 7°C 1950 | 42% |
| May 23 | 23°C | 13°C | 27°C 1960 | 9°C 1966 | 42% |
| May 24 | 23°C | 13°C | 28°C 1964 | 8°C 1957 | 42% |
| May 25 | 23°C | 13°C | 29°C 1951 | 9°C 1958 | 41% |
| May 26 | 23°C | 13°C | 28°C 1961 | 8°C 1952 | 41% |
| May 27 | 23°C | 14°C | 29°C 1961 | 7°C 1964 | 40% |
| May 28 | 23°C | 14°C | 28°C 1961 | 12°C 1949 | 37% |
| May 29 | 24°C | 14°C | 31°C 1961 | 9°C 1954 | 38% |
| May 30 | 24°C | 14°C | 30°C 1958 | 11°C 1965 | 38% |
| May 31 | 24°C | 14°C | 32°C 1958 | 11°C 1957 | 38% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+9).
- May 1
- sunrise 4:50 AM, sunset 6:28 PM
- May 31
- sunrise 4:28 AM, sunset 6:52 PM
Other months
Sources
Records: NOAA GHCN-Daily, station JAW00043313, 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.