United States · 1991–2020 normal
Half Moon Bay in
September.
Typical September weather in Half Moon Bay: 19.2°C by day, 10.6°C at night, 6 mm of rain over 1.3 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high19.2°C
Typical low10.6°C
Rain6 mm
Wet days1.3
Comfort score 76 this month (August leads the year at 78). Daylight is calculated as 12 h 23 from latitude 37.46°. Open-water sea temperature is 14.9°C (11 km from the place centre).
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 5354943
- NOAA station
- USC00043714 · HALF MOON BAY
- Station distance
- 1.6 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.