Cotuit
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Cotuit, MA

Ocean temperature

In Cotuit, Massachusetts, in September, the average water temperature is 64.2°F (17.9°C).
Note: For swimming, a surface water temperature of 64.2°F (17.9°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

The average length of the day in September is 12.5h.

How cold is the water in September in Cotuit?

In September, the average ocean temperature is 64.2°F (17.9°C). For most, swimming in 64.2°F (17.9°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does Cotuit have in September?

In Cotuit, the average length of the day in September is 12.5h.
Average sea temperature in September - Cotuit, MA
  • Average sea temperature in September: 64.3°F

The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).

Average daylight in September - Cotuit, MA
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).