United States · 1991–2020 normal
Half Moon Bay in
December.
Typical December weather in Half Moon Bay: 15.3°C by day, 5.9°C at night, 130 mm of rain over 10 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high15.3°C
Typical low5.9°C
Rain130 mm
Wet days10
Comfort score 36 this month (August leads the year at 78). Daylight is calculated as 9 h 35 from latitude 37.46°. Open-water sea temperature is 12.5°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 · 28 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.