California water temperature in March
| Min (°C/°F) | Avg (°C/°F) | Max (°C/°F) | Current (°C/°F) | |
|---|---|---|---|---|
| Blacks Beach | 13.9 (57) | 15.2 (59.4) | 16.5 (61.7) | 19.1 (66.4) | 
| Carlsbad | 13.1 (55.5) | 14.7 (58.5) | 16.4 (61.4) | 19.4 (66.9) | 
| Coronado | 13.9 (57) | 15.2 (59.4) | 16.5 (61.7) | 18.7 (65.6) | 
| Del Mar | 13.9 (57) | 15.2 (59.4) | 16.5 (61.7) | 19.3 (66.7) | 
| Huntington Beach | 13.1 (55.5) | 14.7 (58.5) | 16.4 (61.4) | 19.1 (66.5) | 
| La Jolla | 13.9 (57) | 15.2 (59.4) | 16.5 (61.7) | 19.3 (66.8) | 
| Laguna Beach | 13.1 (55.5) | 14.7 (58.5) | 16.4 (61.4) | 19 (66.2) | 
| Lake Tahoe | 9.1 (48.4) | 10.8 (51.4) | 12.5 (54.5) | 7.4 (45.3) | 
| Long Beach | 12.5 (54.4) | 14.4 (57.9) | 16.4 (61.4) | 19.7 (67.4) | 
| Los Angeles | 11.4 (52.4) | 13.4 (56.1) | 15.5 (59.8) | 18.5 (65.2) | 
| Malibu | 11.4 (52.4) | 13.4 (56.1) | 15.5 (59.8) | 17.9 (64.2) | 
| Malibu Beach | 11.4 (52.4) | 13.4 (56.1) | 15.5 (59.8) | 17.9 (64.3) | 
| Mission Bay | 13.9 (57) | 15.2 (59.4) | 16.5 (61.7) | 19 (66.1) | 
| Monterey | 10.6 (51.1) | 12.5 (54.5) | 14.4 (57.9) | 14.7 (58.4) | 
| Newport Beach | 13.1 (55.5) | 14.7 (58.5) | 16.4 (61.4) | 19.1 (66.4) | 
| Ocean Beach | 10.1 (50.1) | 12.1 (53.8) | 14.2 (57.5) | 14.9 (58.8) | 
| Oceanside | 13.1 (55.5) | 14.7 (58.5) | 16.4 (61.4) | 19.3 (66.8) | 
| San Clemente | 13.1 (55.5) | 14.7 (58.5) | 16.4 (61.4) | 19.1 (66.5) | 
| San Diego | 13.9 (57) | 15.2 (59.4) | 16.5 (61.7) | 18.6 (65.4) | 
| San Francisco | 10.1 (50.1) | 12.1 (53.8) | 14.2 (57.5) | 14.9 (58.8) | 
| San Onofre | 13.1 (55.5) | 14.7 (58.5) | 16.4 (61.4) | 19.1 (66.4) | 
| Santa Barbara | 11 (51.8) | 13.2 (55.8) | 15.4 (59.7) | 17.1 (62.8) | 
| Santa Catalina Island | 12.5 (54.4) | 14.4 (57.9) | 16.4 (61.4) | 19.5 (67) | 
| Santa Cruz | 11 (51.7) | 12.6 (54.7) | 14.3 (57.7) | 14.5 (58.1) | 
| Santa Monica | 11.4 (52.4) | 13.4 (56.1) | 15.5 (59.8) | 18.1 (64.5) | 
| Tomales Bay | 9.9 (49.8) | 11.7 (53.1) | 13.5 (56.3) | 13.5 (56.4) | 
| Ventura | 11 (51.8) | 13.2 (55.8) | 15.4 (59.7) | 17.7 (63.9) |