United States · 1991–2020 normal
Koloa-Poipu in
September.
Typical September weather in Koloa-Poipu: 30.7°C by day, 22.3°C at night, 75 mm of rain over 13 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high30.7°C
Typical low22.3°C
Rain75 mm
Wet days13
Comfort score 50 this month (January leads the year at 72). Daylight is calculated as 12 h 15 from latitude 21.89°. Open-water sea temperature is 26.9°C (10 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 26.9°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 13191986
- NOAA station
- USC00515710 · MAHAULEPU 941.1
- Station distance
- 4.5 km from the place centre
- Coverage
- Good coverage · 23 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.