August weather forecast
Cape Cod National Seashore, MA

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Weather in August

August continues the peak summer conditions at Cape Cod National Seashore. The sea temperature reaches another high, with an average of 67.5°F (19.7°C) marking the warmest in the year. Daylight hours start their gradual decline from the peak in June and July but remain significant. August, sandwiched between July and September, keeps the favorable weather patterns of summer before the ensuing autumn.

Ocean temperature

With an average ocean temperature of 67.5°F (19.7°C), August is the month with the warmest seawater.
Note: Most people do not find pleasure in swimming when the water temperature is 67.5°F (19.7°C). Breathing becomes increasingly difficult to manage as the water temperature drops from 69.8°F (21°C) to 59°F (15°C).

Daylight

In August, the average length of the day is 13h and 49min.
On the first day of August in Cape Cod National Seashore, sunrise is at 5:34 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:14 pm EDT.
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Frequently asked questions

What is the month with the warmest ocean in Cape Cod National Seashore?

With an average ocean temperature of 67.5°F (19.7°C), August is the month with the warmest seawater in Cape Cod National Seashore, Massachusetts.

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

In August, the average ocean temperature in Cape Cod National Seashore, Massachusetts, is 67.5°F (19.7°C). For most, swimming in 67.5°F (19.7°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

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

In August, the average day length is 13h and 49min.

When is the sunrise / sunset in August in Cape Cod National Seashore?

On the first day of August in Cape Cod National Seashore, sunrise is at 5:34 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:14 pm EDT.

Average sea temperature in August
Cape Cod National Seashore, MA

Average sea temperature in August - Cape Cod National Seashore, MA
  • Average sea temperature in August: 67.5°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 August
Cape Cod National Seashore, MA

Average daylight in August - Cape Cod National Seashore, MA
  • Average daylight in August: 13h and 5min

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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