July weather forecastCape Cod National Seashore, MA
July
Weather in July
July epitomizes summer at Cape Cod National Seashore, presenting maximum sea temperatures for the year. With the sea warming up to an average of 65.8°F (18.8°C), the month is favorable for water activities. Daylight hours remain abundant, just slightly less than June, enhancing outdoor endeavors. As the heart of the summer, July sees the most significant changes in weather compared to its successor and predecessor.Ocean temperature
In Cape Cod National Seashore, the average seawater temperature in July is 65.8°F (18.8°C).Note: The majority of individuals find swimming in 65.8°F (18.8°C) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
In Cape Cod National Seashore, the average length of the day in July is 14h and 52min.On the first day of July, sunrise is at 5:08 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 7:59 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
In Cape Cod National Seashore, in July, the average water temperature is 65.8°F (18.8°C). Swimming in 65.8°F (18.8°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).
In July, the average day length is 14h and 52min.
In July, on the first day of the month, sunrise is at 5:08 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 7:59 pm EDT.
Average sea temperature in July
Cape Cod National Seashore, MA
- Average sea temperature in July: 65.8°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 July
Cape Cod National Seashore, MA
- Average daylight in July: 14h and 54min
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).





