Best time to swim in California Sea temperature by month
Do you want to go to the seaside in California? 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 California.
Swimming in California by month
Discover swimming conditions in detail in California by month below. Click on the links for each month to see details about the sea temperature in the cities of: Los Angeles , San Diego, San Francisco, San Clemente and Santa Barbara.
Month | Averagesea temperature | Our opinion | Details |
---|---|---|---|
January | 51°F to 60°F | cold swimming* | Sea temperature in California in january |
February | 51°F to 59°F | freezing swimming | Sea temperature in California in february |
March | 51°F to 60°F | cold swimming* | Sea temperature in California in march |
April | 51°F to 61°F | cold swimming* | Sea temperature in California in april |
May | 52°F to 63°F | cool swimming* | Sea temperature in California in may |
June | 52°F to 66°F | cool swimming* | Sea temperature in California in june |
July | 53°F to 68°F | cool swimming* | Sea temperature in California in july |
August | 52°F to 69°F | cool swimming* | Sea temperature in California in august |
September | 53°F to 68°F | cool swimming* | Sea temperature in California in september |
October | 53°F to 66°F | cool swimming* | Sea temperature in California in october |
November | 53°F to 63°F | cool swimming* | Sea temperature in California in november |
December | 52°F to 61°F | cold swimming* | Sea temperature in California in december |
* in at least part of the area.
Where and when should you swim in California?

Best time to swim in San Francisco
No month is favorable as far as sea temperature for swimming in San Francisco.

Best time to swim in Santa Barbara
No month is favorable as far as sea temperature for swimming in Santa Barbara.
Other cities and places in California:
Water temperatures in California over the entire year
On this chart, we show you the variation of the average sea water temperature in California for the cities of: Los Angeles , San Diego, San Francisco, San Clemente and Santa Barbara.