Swimming in Carlsbad in september 2025: Average sea temperature in september and tide times in september 2025

Average sea temperature in Carlsbad in september 2025.

In september, according to seasonal norms, the sea temperature in Carlsbad is:

Minimum: 65°F

Average: 68°F

Maximum: 70°F

Other useful seasonal weather averages in september:

  • Outside temperature: 72°F to 81°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at 14.3mph
  • It rains a total of 0.7in, over 1 day(s).

Should we swim in Carlsbad in september?

Yes... and no. The water temperature in Carlsbad in september is cool

Swimming in september on the beaches of Carlsbad 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 76°F, 0.7in of precipitation (over 1 days) and 67.23 % humidity.

Water and normal seasonal temperatures in Carlsbad in september

September
Average sea temperature 68°F
Minimum sea temperature 65°F
Maximum sea temperature 70°F
Average outside temperature 77°F
Maximum outside temperature 81°F
Minimum outside temperature 74°F
Wind speed 10.6mph
Wind temperature 74°F
Precipitation 0.7in
Number of days of rain 1 jour(s)
(3%)
Humidity 68%
Visibility in kilometers 9.91km
Cloud cover 9%
Our opinion cool swimming

Chart of the tides in september 2025

Tide times in september 2025 in Carlsbad

Swim elsewhere in California in september

City Average T° Max. T° Our opinion
Los Angeles in september67°F70°Fcool swimming
San Francisco in september58°F59°Ffreezing swimming
San Diego in september67°F70°Fcool swimming
Big Sur in september58°F60°Ffreezing swimming
Carmel-by-the-Sea in september59°F61°Ffreezing swimming
Eureka in september53°F57°Ffreezing swimming
Half Moon Bay in september58°F59°Ffreezing swimming
Hollywood in september67°F70°Fcool swimming
Malibu in september66°F69°Fcool swimming
Mendocino in september55°F57°Ffreezing swimming
Morro Bay in september59°F62°Ffreezing swimming
Oakland in september58°F59°Ffreezing swimming
Pismo Beach in september59°F62°Ffreezing swimming
San Clemente in september68°F70°Fcool swimming
Santa Barbara in september62°F65°Fcold swimming
Santa Cruz California in september58°F60°Ffreezing swimming
Santa Monica in september67°F70°Fcool swimming
Ventura in september64°F67°Fcool swimming
Bodega Bay in september56°F58°Ffreezing swimming
Huntington Beach in september67°F70°Fcool swimming

Swim in California in september: sea temperature by city

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