Higashiyamato Weather in September
Average highs run from 29°C on September 1 to 23°C on September 30, and lows from 20°C to 14°C. Normal precipitation for the month is 204 mm over about 15 wet days.
September day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 26°C
- Average low
- 17°C
- Precipitation
- 204 mm
- Record high
- 36°CSep 3, 2025
- Record low
- 9°CSep 29, 1960
- Daylight
- 12 h 56 min to 11 h 52 min
- Cloud cover
- 75%
- Humidity
- 83%
- Dew point
- 18°C
- Wind
- 10.4 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 |
|---|---|---|---|---|---|
| Sep 1 | 29°C | 20°C | 33°C 1966 | 17°C 1958 | 57% |
| Sep 2 | 29°C | 20°C | 35°C 1959 | 17°C 1957 | 56% |
| Sep 3 | 29°C | 20°C | 36°C 2025 | 17°C 1951 | 56% |
| Sep 4 | 29°C | 20°C | 34°C 1952 | 17°C 1957 | 56% |
| Sep 5 | 29°C | 20°C | 33°C 1952 | 17°C 1957 | 56% |
| Sep 6 | 29°C | 20°C | 34°C 1958 | 17°C 1949 | 56% |
| Sep 7 | 28°C | 19°C | 33°C 1958 | 16°C 1949 | 55% |
| Sep 8 | 28°C | 19°C | 35°C 2025 | 17°C 1949 | 54% |
| Sep 9 | 28°C | 19°C | 34°C 2025 | 17°C 1953 | 54% |
| Sep 10 | 28°C | 19°C | 33°C 2025 | 16°C 1953 | 54% |
| Sep 11 | 28°C | 19°C | 32°C 2025 | 16°C 1955 | 54% |
| Sep 12 | 28°C | 19°C | 31°C 1952 | 16°C 1949 | 51% |
| Sep 13 | 27°C | 18°C | 29°C 1950 | 16°C 1949 | 51% |
| Sep 14 | 27°C | 18°C | 33°C 2025 | 14°C 1951 | 51% |
| Sep 15 | 27°C | 18°C | 32°C 1954 | 15°C 1949 | 51% |
| Sep 16 | 27°C | 18°C | 33°C 2025 | 13°C 1949 | 50% |
| Sep 17 | 26°C | 17°C | 35°C 2025 | 13°C 1956 | 51% |
| Sep 18 | 26°C | 17°C | 34°C 2025 | 14°C 1963 | 51% |
| Sep 19 | 26°C | 17°C | 33°C 1950 | 12°C 1957 | 50% |
| Sep 20 | 25°C | 17°C | 29°C 1949 | 14°C 1963 | 50% |
| Sep 21 | 25°C | 16°C | 31°C 2025 | 9°C 1951 | 49% |
| Sep 22 | 25°C | 16°C | 28°C 1960 | 13°C 1963 | 47% |
| Sep 23 | 25°C | 16°C | 28°C 1961 | 12°C 1950 | 48% |
| Sep 24 | 25°C | 16°C | 31°C 1960 | 9°C 1963 | 48% |
| Sep 25 | 25°C | 15°C | 29°C 1966 | 13°C 1950 | 48% |
| Sep 26 | 24°C | 15°C | 32°C 1953 | 12°C 1962 | 47% |
| Sep 27 | 24°C | 15°C | 33°C 1959 | 11°C 1962 | 47% |
| Sep 28 | 24°C | 15°C | 29°C 2025 | 10°C 1951 | 48% |
| Sep 29 | 24°C | 15°C | 32°C 2025 | 9°C 1960 | 49% |
| Sep 30 | 23°C | 14°C | 27°C 1955 | 10°C 1960 | 47% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+9).
- September 1
- sunrise 5:14 AM, sunset 6:10 PM
- September 30
- sunrise 5:36 AM, sunset 5:28 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.