December weather forecastMattapoisett Center, MA
December
Weather in December
Ocean temperature
In Mattapoisett Center, Massachusetts, the average seawater temperature in December is 46.9°F (8.3°C).Note: Dipping in 46.9°F (8.3°C) at temperatures less than 50°F (10°C) without proper gear can lead to pronounced cold shock and breathing difficulties.
Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:51 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:23 pm EST.
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, the average seawater temperature in December is 46.9°F (8.3°C). Swimming in 46.9°F (8.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.
With an average of 9h and 12min of daylight, December has the shortest days of the year.
In December, the average day length is 9h and 13min.
In December, on the first day of the month, sunrise is at 6:51 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:23 pm EST.
Average sea temperature in December
Mattapoisett Center, MA
- Average sea temperature in December: 46.9°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 December
Mattapoisett Center, MA
- Average daylight in December: 9h and 12min
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).
