U.S. Virgin Islands · 1991–2020 normal
Altona in
September.
Typical September weather in Altona: 31.8°C by day, 26°C at night, 125 mm of rain over 11.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high31.8°C
Typical low26°C
Rain125 mm
Wet days11.5
Comfort score 34 this month (March leads the year at 64). Daylight is calculated as 12 h 13 from latitude 18.34°. Open-water sea temperature is 28.9°C (9 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 28.9°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 4795186
- NOAA station
- VQW00011640 · CYRIL E KING AP
- Station distance
- 3.3 km from the place centre
- Coverage
- Strong coverage · 26 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.