Best time to swim in the United States (USA) Sea temperature by month
Do you want to go to the seaside in the United States (USA)? But when should you go to be sure to enjoy good sea water temperature and be able to swim for a long time? Now or another month during the year? On this page, find the sea temperature by month in the United States (USA).
Swimming in the United States (USA) by month
Discover swimming conditions in detail in the United States (USA) by month below. Click on the links for each month to see details about the sea temperature in the cities of: California, Washington D. C., Boston, Hawaii (Honolulu) and Miami (Florida).
| Month | Average Sea temperature | Our opinion |
|---|---|---|
| January | 33°F to 77°F | pleasant swimming* |
| February | 32°F to 77°F | pleasant swimming* |
| March | 33°F to 76°F | pleasant swimming* |
| April | 34°F to 79°F | ideal swimming* |
| May | 40°F to 81°F | ideal swimming* |
| June | 45°F to 85°F | ideal swimming* |
| July | 49°F to 87°F | ideal swimming* |
| August | 50°F to 88°F | ideal swimming* |
| September | 49°F to 86°F | ideal swimming* |
| October | 47°F to 83°F | ideal swimming* |
| November | 41°F to 80°F | ideal swimming* |
| December | 36°F to 78°F | pleasant swimming* |
* in at least part of the area.
Where and when should you swim in the United States (USA)?
Best time to swim in California
The best months for swimming in California are june, july, august, september et october.
Best time to swim in Washington D. C.
The best months for swimming in Washington D. C. are july, august et september.
Best time to swim in Boston
The best months for swimming in Boston are july, august et september.
Other cities and places in the United States (USA):
Water temperatures in the United States (USA) over the entire year
On this chart, we show you the variation of the average sea water temperature in the United States (USA) for the cities of: California, Washington D. C., Boston, Hawaii (Honolulu) and Miami (Florida).