Japan · 1991–2020 normal
Hachijō in
September.
Typical September weather in Hachijō: 28°C by day, 22.4°C at night, 460 mm of rain over 19.1 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high28°C
Typical low22.4°C
Rain460 mm
Wet days19.1
Comfort score 5 this month (May leads the year at 42). Daylight is calculated as 12 h 20 from latitude 33.10°. Open-water sea temperature is 27.3°C (9 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 27.3°C in September. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 11611619
- NOAA station
- JA000047678 · HACHIJOJIMA
- Station distance
- 1.6 km from the place centre
- Coverage
- Good coverage · 17 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.