Shelter Island Heights
New York, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Shelter Island Heights, NY

Average sea temperature in September - Shelter Island Heights, NY
  • Average sea temperature in September: 68.2°F

The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).

Average daylight in September - Shelter Island Heights, NY
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.3h).