Japan · 1991–2020 normal
Heian in
September.
Typical September weather in Heian: 29°C by day, 20.7°C at night, 228 mm of rain over 12.3 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high29°C
Typical low20.7°C
Rain228 mm
Wet days12.3
Comfort score 38 this month (May leads the year at 73). Daylight is calculated as 12 h 21 from latitude 35.19°. Open-water sea temperature is 25.7°C (36 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 25.7°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 11808338
- NOAA station
- JA000047636 · NAGOYA
- Station distance
- 4.5 km from the place centre
- Coverage
- Good coverage · 16 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.