Swimming in Half Moon Bay in july 2025: Average sea temperature in july and tide times in july 2025

Average sea temperature in Half Moon Bay in july 2025.

In july, according to seasonal norms, the sea temperature in Half Moon Bay is:

Minimum: 53°F

Average: 56°F

Maximum: 58°F

Other useful seasonal weather averages in july:

  • Outside temperature: 59°F to 66°F
  • Most common weather: "Clear/Sunny"
  • The wind blows at 9.3mph
  • It rains a total of 0.4in, over 0 day(s).

Should we swim in Half Moon Bay in july?

No... The water temperature in Half Moon Bay in july is freezing

You won't be able to swim in Half Moon Bay in july! The water temperature is freezing, reaching as low as 53°F (and only 58°F at best)! Our advice: if you are going to Half Moon Bay this month, plan to sightsee and forget the beach!

Note also that in july, the climate is good with an average outside temperature of 63°F, 0.3in of precipitation (over 0 days) and 84.41 % humidity.

Water and normal seasonal temperatures in Half Moon Bay in july

July
Average sea temperature 56°F
Minimum sea temperature 53°F
Maximum sea temperature 58°F
Average outside temperature 63°F
Maximum outside temperature 67°F
Minimum outside temperature 59°F
Wind speed 11.2mph
Wind temperature 59°F
Precipitation 0.4in
Humidity 85%
Visibility in kilometers 9.51km
Cloud cover 18%
Our opinion freezing swimming

Chart of the tides in july 2025

Tide times in july 2025 in Half Moon Bay

Swim elsewhere in California in july

City Average T° Max. T° Our opinion
Los Angeles in july68°F72°Fcool swimming
San Francisco in july56°F58°Ffreezing swimming
San Diego in july68°F70°Fcool swimming
Big Sur in july57°F60°Ffreezing swimming
Carmel-by-the-Sea in july58°F60°Ffreezing swimming
Eureka in july53°F57°Ffreezing swimming
Hollywood in july68°F72°Fcool swimming
Malibu in july66°F70°Fcool swimming
Mendocino in july54°F57°Ffreezing swimming
Morro Bay in july58°F61°Ffreezing swimming
Oakland in july56°F58°Ffreezing swimming
Pismo Beach in july58°F61°Ffreezing swimming
San Clemente in july68°F72°Fcool swimming
Santa Barbara in july63°F66°Fcold swimming
Santa Cruz California in july57°F60°Ffreezing swimming
Santa Monica in july68°F72°Fcool swimming
Ventura in july64°F68°Fcool swimming
Bodega Bay in july54°F57°Ffreezing swimming
Carlsbad in july68°F71°Fcool swimming
Huntington Beach in july68°F72°Fcool swimming

Swim in California in july: sea temperature by city

Change units