September weather forecast and climate
Salem, NH

Average sea temperature in September - Salem, NH
  • Average sea temperature in September: 17°C

The best month for swimming (with the highest average sea temperature) is August (19.1°C).
The coldest month (with the lowest average sea temperature) is March (3.8°C).

Average daylight in September - Salem, NH
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).

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