Ocean Temperatures Along the California Coast in Fall

Average water temperatures of the Pacific Ocean along the California coast during fall are listed below. You can jump to a separate table for each region of the state: Southern Coast, Los Angeles Area, Central Coast, San Francisco Area and Northern Coast.

Ocean temperatures continue to stay warm along the coast through September and even into October at some beaches. Indeed, a few places on the state's northern coast reach their highest temperature of the year in October.

During autumn, sea temperatures along California range from the mid 60s Fahrenheit (18 degrees Celsius) in the south to the mid 50s (12 C) in the north. Particularly warm waters in fall occur off Catalina Island, Newport Beach and Alameda in San Francisco Bay.

Actual ocean temperatures do of course vary from year to year depending upon the weather and the flow of ocean currents.

These coastal water temperatures are averages compiled by the US National Oceanographic Data Center of the National Oceanic and Atmospheric Administration.

Southern California Coast

Average ocean water temperature in °F
Place Sep 16-30 Oct 1-15 Oct 16-31 Nov
Balboa 65 65 63 61
Dana Point 66 65 64 61
La Jolla 66 65 63 61
Newport Beach 68 68 65 64
Oceanside 66 65 63 61
San Clemente 66 65 63 61
Santa Catalina Island 68 68 66 63

Los Angeles Area

Average ocean water temperature in °F
Place Sep 16-30 Oct 1-15 Oct 16-31 Nov
Anacapa Island 64 64 63 61
Gaviota 63 62 62 61
Los Angeles 66 66 66 64
Point Mugu 62 62 60 60
Port Hueneme 62 62 61 60
Santa Monica 66 65 63 61
Ventura 65 65 62 60
Zuma Beach 64 64 62 61

Central California Coast

Average ocean water temperature in °F
Place Sep 16-30 Oct 1-15 Oct 16-31 Nov
Avila Beach 60 59 59 57
Morro Bay 58 57 57 56
Pacific Grove 58 57 56 55
Point Lobos 56 55 55 55
Santa Barbara 64 64 62 60

San Francisco Area

Average ocean water temperature in °F
Place Sep 16-30 Oct 1-15 Oct 16-31 Nov
Alameda 65 64 61 58
Bodega Bay 55 55 54 54
San Francisco, Fort Point 60 59 58 56
Santa Cruz 59 59 59 56

Northern California Coast

Average ocean water temperature in °F
Place Sep 16-30 Oct 1-15 Oct 16-31 Nov
Crescent City 56 54 54 53
Fort Ross 54 54 54 54
Mendocino 53 54 53 53
Trinidad 54 54 54 53
Reference

National Oceanographic Data Center. NOAA. NODC Coastal Water Temperature Guide (CWTG).

California Ocean Temperatures
Pacific Temperatures
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