Swimming in San Clemente in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in San Clemente in september 2025.
In september, according to seasonal norms, the sea temperature in San Clemente is:
Minimum: 65°F
Average: 68°F
Maximum: 70°F
Other useful seasonal weather averages in september:
- Outside temperature: 71°F to 80°F
- Most common weather: "Clear/Sunny"
- The wind blows at 13.7mph
- It rains a total of 0.5in, over 1 day(s).
Should we swim in San Clemente in september?
Yes... and no. The water temperature in San Clemente in september is cool
Swimming in september on the beaches of San Clemente is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 70°F, it can also be as low as 65°F! Note that the average is 68°F.
Note also that in september, the climate is perfect with an average outside temperature of 75°F, 0.5in of precipitation (over 1 days) and 69.11 % humidity.
Water and normal seasonal temperatures in San Clemente in september
| September | |||
| Average sea temperature | 68°F | ||
| Minimum sea temperature | 65°F | ||
| Maximum sea temperature | 70°F | ||
| Average outside temperature | 76°F | ||
| Maximum outside temperature | 81°F | ||
| Minimum outside temperature | 72°F | ||
| Wind speed | 9.9mph | ||
| Wind temperature | 72°F | ||
| Precipitation | 0.5in | ||
| Number of days of rain | 1 jour(s) (2%) | ||
| Humidity | 70% | ||
| Visibility in kilometers | 9.86km | ||
| Cloud cover | 11% | ||
| Our opinion | cool swimming |
Chart of the tides in september 2025
Tide times in september 2025 in San Clemente
Swim elsewhere in California in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Los Angeles in september | 67°F | 70°F | cool swimming | San Francisco in september | 58°F | 59°F | freezing swimming | San Diego in september | 67°F | 70°F | cool swimming | Big Sur in september | 58°F | 60°F | freezing swimming | Carmel-by-the-Sea in september | 59°F | 61°F | freezing swimming | Eureka in september | 53°F | 57°F | freezing swimming | Half Moon Bay in september | 58°F | 59°F | freezing swimming | Hollywood in september | 67°F | 70°F | cool swimming | Malibu in september | 66°F | 69°F | cool swimming | Mendocino in september | 55°F | 57°F | freezing swimming | Morro Bay in september | 59°F | 62°F | freezing swimming | Oakland in september | 58°F | 59°F | freezing swimming | Pismo Beach in september | 59°F | 62°F | freezing swimming | Santa Barbara in september | 62°F | 65°F | cold swimming | Santa Cruz California in september | 58°F | 60°F | freezing swimming | Santa Monica in september | 67°F | 70°F | cool swimming | Ventura in september | 64°F | 67°F | cool swimming | Bodega Bay in september | 56°F | 58°F | freezing swimming | Carlsbad in september | 68°F | 70°F | cool swimming | Huntington Beach in september | 67°F | 70°F | cool swimming |