United States · 1991–2020 normal
Chelsea in
August.
Typical August weather in Chelsea: 29.5°C by day, 20.1°C at night, 105 mm of rain over 8 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high29.5°C
Typical low20.1°C
Rain105 mm
Wet days8
Comfort score 58 this month (September leads the year at 80). Daylight is calculated as 13 h 47 from latitude 40.60°. Open-water sea temperature is 23.1°C (27 km from the place centre).
Event window
Warm sea in August
The nearest open-water NOAA OISST 1991–2020 cell averages 23.1°C in August. 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 5112387
- NOAA station
- USW00014734 · NEWARK LIBERTY INTL AP
- Station distance
- 9.4 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.