California water temperature in October
| Min (°C/°F) | Avg (°C/°F) | Max (°C/°F) | Current (°C/°F) | |
|---|---|---|---|---|
| Blacks Beach | 16.9 (62.3) | 18.3 (64.9) | 19.8 (67.6) | 15.9 (60.6) |
| Carlsbad | 16.6 (61.8) | 18.1 (64.6) | 19.7 (67.4) | 15.5 (59.8) |
| Coronado | 16.9 (62.3) | 18.3 (64.9) | 19.8 (67.6) | 15.9 (60.6) |
| Del Mar | 16.9 (62.3) | 18.3 (64.9) | 19.8 (67.6) | 15.9 (60.6) |
| Huntington Beach | 16.6 (61.8) | 18.1 (64.6) | 19.7 (67.4) | 15.1 (59.2) |
| La Jolla | 16.9 (62.3) | 18.3 (64.9) | 19.8 (67.6) | 16.1 (60.9) |
| Laguna Beach | 16.6 (61.8) | 18.1 (64.6) | 19.7 (67.4) | 15.3 (59.6) |
| Lake Tahoe | 12 (53.6) | 13.3 (55.9) | 14.6 (58.3) | 7 (44.6) |
| Long Beach | 16.2 (61.1) | 17.8 (64) | 19.5 (67) | 15 (59) |
| Los Angeles | 15.2 (59.3) | 16.3 (61.3) | 17.5 (63.4) | 15 (59) |
| Malibu | 15.2 (59.3) | 16.3 (61.3) | 17.5 (63.4) | 14.7 (58.5) |
| Malibu Beach | 15.2 (59.3) | 16.3 (61.3) | 17.5 (63.4) | 14.8 (58.7) |
| Mission Bay | 16.9 (62.3) | 18.3 (64.9) | 19.8 (67.6) | 15.9 (60.7) |
| Monterey | 12.8 (55) | 14.3 (57.7) | 15.9 (60.5) | 13 (55.5) |
| Newport Beach | 16.6 (61.8) | 18.1 (64.6) | 19.7 (67.4) | 15.2 (59.4) |
| Ocean Beach | 12.4 (54.3) | 13.7 (56.7) | 15 (59) | 12.9 (55.3) |
| Oceanside | 16.6 (61.8) | 18.1 (64.6) | 19.7 (67.4) | 15.4 (59.7) |
| San Clemente | 16.6 (61.8) | 18.1 (64.6) | 19.7 (67.4) | 15.5 (59.9) |
| San Diego | 16.9 (62.3) | 18.3 (64.9) | 19.8 (67.6) | 15.8 (60.4) |
| San Francisco | 12.4 (54.3) | 13.7 (56.7) | 15 (59) | 12.9 (55.2) |
| San Onofre | 16.6 (61.8) | 18.1 (64.6) | 19.7 (67.4) | 15.4 (59.7) |
| Santa Barbara | 14.3 (57.7) | 15.7 (60.3) | 17.2 (62.9) | 12.8 (55.1) |
| Santa Catalina Island | 16.2 (61.1) | 17.8 (64) | 19.5 (67) | 15.5 (59.8) |
| Santa Cruz | 13 (55.4) | 14.4 (57.9) | 15.8 (60.4) | 12.7 (54.9) |
| Santa Monica | 15.2 (59.3) | 16.3 (61.3) | 17.5 (63.4) | 15.3 (59.5) |
| Tomales Bay | 12.1 (53.7) | 13.4 (56.1) | 14.8 (58.6) | 11.8 (53.3) |
| Ventura | 14.3 (57.7) | 15.7 (60.3) | 17.2 (62.9) | 13.7 (56.6) |