Ocean Temperatures Along the California Coast in Summer

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Average water temperatures of the Pacific Ocean along the California coast during summer are listed below. You'll find separate tables for each region of the state: Southern Coast, Los Angeles Area, Central Coast, San Francisco Area and Northern Coast.

The Pacific Ocean continues to warm throughout June and July along the entire Californian coast. At most beaches, the water temperature peaks in August and early September.

Sea temperatures rise most rapidly in southern California to create the widest temperature range for the year between the northern and southern Pacific coast. Water along the southern coast reaches around 68 degrees F (20 degrees Celsius) during summer, while off northern beaches the ocean temperature hovers at just 52 degrees F (11 C).

These coastal water temperatures are averages compiled by the National Oceanographic Data Center. Actual ocean temperatures do vary from year to year depending upon the weather and the flow of ocean currents.

Southern California Coast

The warmest ocean water of the year in California lies off Newport Beach and Santa Catalina Island in August when temperatures average 70 degrees F (21 C).

Average ocean water temperature in °F
Place June
16-30
July
1-15
July
16-31
Aug
1-15
Aug
16-31
Sep
1-15
Balboa 64 65 66 67 67 65
Dana Point 67 67 68 68 68 67
La Jolla 65 66 67 68 68 66
Newport Beach 66 69 69 70 69 69
Oceanside 65 66 67 69 69 67
San Clemente 63 64 66 68 67 66
Santa Catalina Island 64 66 67 69 70 69

Los Angeles Area

Average ocean water temperature in °F
Place June
16-30
July
1-15
July
16-31
Aug
1-15
Aug
16-31
Sep
1-15
Anacapa Island 61 63 64 65 65 65
Gaviota 60 62 63 64 64 64
Los Angeles 64 65 67 68 68 67
Point Mugu 58 59 60 62 61 61
Port Hueneme 60 60 62 62 62 62
Santa Monica 65 66 67 68 68 67
Ventura 64 64 65 67 67 66
Zuma Beach 60 61 63 66 66 65

Central California Coast

Average ocean water temperature in °F
Place June
16-30
July
1-15
July
16-31
Aug
1-15
Aug
16-31
Sep
1-15
Avila Beach 57 58 60 60 60 60
Morro Bay 57 57 58 58 58 58
Pacific Grove 57 57 57 57 57 58
Point Lobos 53 53 54 54 55 55
Santa Barbara 62 63 63 64 65 64

San Francisco Area

Average ocean water temperature in °F
Place June
16-30
July
1-15
July
16-31
Aug
1-15
Aug
16-31
Sep
1-15
Alameda 65 66 66 66 66 66
Bodega Bay 51 51 53 53 54 54
San Francisco, Fort Point 58 58 58 59 60 60
Santa Cruz 57 58 59 59 60 60

Northern California Coast

Average ocean water temperature in °F
Place June
16-30
July
1-15
July
16-31
Aug
1-15
Aug
16-31
Sep
1-15
Crescent City 56 57 58 59 59 58
Fort Ross 50 51 52 52 53 53
Mendocino 51 51 51 52 52 53
Trinidad 51 53 53 53 55 55
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