September weather forecastMattapoisett Center, MA
September
Weather in September
Ocean temperature
In Mattapoisett Center, Massachusetts, in September, the average water temperature is 65.8°F (18.8°C).Note: Swimming in 65.8°F (18.8°C) is not pleasurable for most people. Breathing control grows increasingly challenging as the water temperature falls under 69.8°F (21°C).
Daylight
The average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:16 pm. On the last day of September, sunrise is at 6:39 am and sunset at 6:26 pm EDT.
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Mattapoisett Center, in September, the average water temperature is 65.8°F (18.8°C). For swimming, a surface water temperature of 65.8°F (18.8°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).
In Mattapoisett Center, the average day length in September is 12h and 28min.
In September, on the first day of the month, sunrise is at 6:09 am and sunset at 7:16 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 6:26 pm EDT.
Average sea temperature in September
Mattapoisett Center, MA
- Average sea temperature in September: 65.8°F
The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).
Average daylight in September
Mattapoisett Center, MA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).





