January weather forecast
Cape Cod National Seashore, MA

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Weather in January

Winter's grip descends steadily on Cape Cod National Seashore in January. Sea temperatures plummet to the low 41.5°F (5.3°C), their lowest of the year, making maritime activities less attractive. This month experiences a relatively robust transition into the New Year's winter, and one could expect less daylight—with just under 10 hours per day on average. Compared to December, January has lower sea temperatures and marginally increased daylight.

Ocean temperature

In January, the average ocean temperature is 41.5°F (5.3°C).
Note: Engaging in a swim in 41.5°F (5.3°C) can threaten life. Brief exposure to 55.4°F (13°C) waters is uneasy, and submersion below 50°F (10°C) can lead to cold shock and disrupted breathing patterns, varying by individual.

Daylight

In January, the average length of the day in Cape Cod National Seashore, Massachusetts, is 9h and 32min.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:19 pm. On the last day of January, sunrise is at 6:53 am and sunset at 4:53 pm EST.
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Frequently asked questions

What is the ocean temperature in January in Cape Cod National Seashore?

In Cape Cod National Seashore, the average seawater temperature in January is 41.5°F (5.3°C). Swimming in 41.5°F (5.3°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Cape Cod National Seashore have in January?

The average day length in January in Cape Cod National Seashore, Massachusetts, is 9h and 32min.

What time are sunrise and sunset in January in Cape Cod National Seashore?

In January, on the first day of the month, sunrise is at 7:07 am and sunset at 4:19 pm. On the last day of the month, in Cape Cod National Seashore, Massachusetts, sunrise is at 6:53 am and sunset at 4:53 pm EST.

Average sea temperature in January
Cape Cod National Seashore, MA

Average sea temperature in January - Cape Cod National Seashore, MA
  • Average sea temperature in January: 41.5°F

The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).

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Average daylight in January
Cape Cod National Seashore, MA

Average daylight in January - Cape Cod National Seashore, MA
  • Average daylight in January: 9h and 3min

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).

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Cape Cod National Seashore, Massachusetts, USA

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