Weather in December
Ocean temperature
In December, the average ocean temperature in Ocean Bluff-Brant Rock, Massachusetts, is 46.2°F (7.9°C).Note: Without suitable protection, venturing into 46.2°F (7.9°C) waters cooler than 50°F (10°C) can lead to pronounced cold shock and rapid breaths.
Daylight
The month with the shortest days in Ocean Bluff-Brant Rock is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:52 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:21 pm EST.
Frequently asked questions
What is the water temperature in December in Ocean Bluff-Brant Rock?
In Ocean Bluff-Brant Rock, the average seawater temperature in December is 46.2°F (7.9°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.
What is the month with the shortest days in Ocean Bluff-Brant Rock?
The month with the shortest days in Ocean Bluff-Brant Rock, Massachusetts, is December, with an average of 9h and 12min of daylight.
How many hours of daylight does Ocean Bluff-Brant Rock have in December?
In Ocean Bluff-Brant Rock, the average day length in December is 9h and 10min.
What time are sunrise and sunset in December in Ocean Bluff-Brant Rock?
On the first day of December in Ocean Bluff-Brant Rock, sunrise is at 6:52 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:21 pm EST.
Average sea temperature in December
Ocean Bluff-Brant Rock, MA
- Average sea temperature in December: 46.3°F
The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is March (38.8°F).
Average daylight in December
Ocean Bluff-Brant Rock, MA
- Average daylight in December: 9h and 1min
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).
Ocean Bluff-Brant Rock, Massachusetts, USA
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