Weather in December
Ocean temperature
In December, the average ocean temperature in Cobb Island, Maryland, is 53.4°F (11.9°C).Note: Diving into 53.4°F (11.9°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation.
Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Cobb Island.On the first day of the month, sunrise is at 7:05 am and sunset at 4:47 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:57 pm EST.
Frequently asked questions
What is the ocean temperature in December in Cobb Island?
In Cobb Island, the average seawater temperature in December is 53.4°F (11.9°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 Cobb Island?
With an average of 9h and 36min of daylight, December has the shortest days of the year in Cobb Island.
What is the average length of the day in December in Cobb Island?
The average day length in December in Cobb Island is 9h and 34min.
When are sunrise and sunset in December in Cobb Island?
On the first day of December in Cobb Island, Maryland, sunrise is at 7:05 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:57 pm EST.
Average sea temperature in December
Cobb Island, MD
- Average sea temperature in December: 53.3°F
The best month for swimming (with the highest average sea temperature) is August (78.4°F).
The coldest month (with the lowest average sea temperature) is February (47.1°F).
Average daylight in December
Cobb Island, MD
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
Cobb Island, Maryland, USA
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