North Plymouth
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
North Plymouth, MA

Ocean temperature

In North Plymouth, Massachusetts, in December, the average water temperature is 46.9°F (8.3°C).
Note: Swimming in 46.9°F (8.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The month with the shortest days is December, with an average of 9.2h of daylight.

What is the ocean temperature in December in North Plymouth?

In North Plymouth, in December, the average water temperature 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.

What is the month with the shortest days in North Plymouth?

The month with the shortest days in North Plymouth is December, with an average of 9.2h of daylight.

How many hours of daylight does North Plymouth have in December?

The average length of the day in December in North Plymouth is 9.2h.
Average sea temperature in December - North Plymouth, 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 - North Plymouth, MA
  • Average daylight in December: 9.2h

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