Weather in April
With spring in full blossom, April presents Cape Cod National Seashore with significant improvements compared to March. The sea temperature sees a rise, reaching an average of 43.5°F (6.4°C). Alongside the climbing temperature trend, daylight hours stretch further, with nearly 13.5 hours per day on average. April's burgeoning spring conditions illustrate a stark contrast with the preceding months' cold and dark days.
Note: You can swim in 43.5°F (6.4°C) below 50°F (10°C) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 55.4°F (13°C) without it is tough.
On the first day of April, sunrise is at 6:21 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 7:37 pm EDT.
Ocean temperature
In April, the average ocean temperature is 43.5°F (6.4°C).Note: You can swim in 43.5°F (6.4°C) below 50°F (10°C) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 55.4°F (13°C) without it is tough.
Daylight
The average length of the day in April in Cape Cod National Seashore is 13h and 23min.On the first day of April, sunrise is at 6:21 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 7:37 pm EDT.
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the ocean temperature in April?
In Cape Cod National Seashore, in April, the average water temperature is 43.5°F (6.4°C). Swimming in 43.5°F (6.4°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.
How many hours of daylight does Cape Cod National Seashore have in April?
The average day length in April is 13h and 23min.
What time are sunrise and sunset in April?
In April, on the first day of the month, sunrise is at 6:21 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 7:37 pm EDT.
Average sea temperature in April
Cape Cod National Seashore, MA
- Average sea temperature in April: 43.5°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).
Average daylight in April
Cape Cod National Seashore, MA
- Average daylight in April: 13h and 2min
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).
Cape Cod National Seashore, Massachusetts, USA
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