In January warmest sea in California is usually observed in the following locations: Monterey, Santa Cruz, San Francisco.
Table below shows the average sea water temperature for marine resorts of California in January for the last three years.
| Place name | January 2026 | January 2025 | January 2024 |
|---|---|---|---|
| Monterey | 57.7°F | 53.6°F | 57.2°F |
| Santa Cruz | 57.4°F | 53.8°F | 56.5°F |
| San Francisco | 54.5°F | 52.7°F | 54.8°F |
| Sausalito | 54.1°F | 52.3°F | 54.3°F |
| Oakland | 53.8°F | 52.5°F | 54.3°F |
| Fremont | 53.4°F | 52.5°F | 53.6°F |
| San Jose | 53.4°F | 52.5°F | 53.5°F |
| Incline Village | 44.6°F | 42.9°F | 43.5°F |
| Lake Tahoe | 44.4°F | 42.8°F | 43.4°F |
| Stateline | 44.3°F | 42.7°F | 43.4°F |
| South Lake Tahoe | 44.3°F | 42.6°F | 43.4°F |
| Yosemite | 39.1°F | 39.1°F | 39.1°F |
Charts below show average sea water temperature for California resorts with the warmest sea in January.
You can also check other months of the year to see sea temperature of California resorts at that time.
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