San Francisco in January
Find out everything about the water temperature in San Francisco in January. Average, minimum and maximum recorded temperatures as well as daily temperature in January for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in January
Minimum:
50.6 °F
Average:
52.8 °F
Maximum:
56.7 °F
Sea water temperature in San Francisco in January
In the city of San Francisco, the month of January is too cold for swimming. The minimum recorded temperature during this month was 50.6°F on January 7, 2017, with an average temperature being 52.8°F and a maximum temperature reaching 56.7°F on January 6, 2024.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Jan 1 | 52.7°F | 55.6°F | 51.8°F |
| Jan 2 | 52.6°F | 55.5°F | 52.2°F |
| Jan 3 | 52.5°F | 55.3°F | 52.1°F |
| Jan 4 | 52.4°F | 55.4°F | 52.0°F |
| Jan 5 | 52.4°F | 55.6°F | 52.1°F |
| Jan 6 | 52.6°F | 56.7°F | 52.4°F |
| Jan 7 | 52.5°F | 55.2°F | 51.9°F |
| Jan 8 | 52.6°F | 55.7°F | 51.9°F |
| Jan 9 | 52.7°F | 55.5°F | 52.3°F |
| Jan 10 | 52.8°F | 55.2°F | 52.5°F |
| Jan 11 | 52.6°F | 54.7°F | 52.0°F |
| Jan 12 | 52.5°F | 54.4°F | 51.8°F |
| Jan 13 | 52.5°F | 54.0°F | 52.1°F |
| Jan 14 | 52.6°F | 53.8°F | 52.4°F |
| Jan 15 | 52.6°F | 53.9°F | 52.5°F |
| Jan 16 | 52.7°F | 54.0°F | 52.2°F |
| Jan 17 | 52.8°F | 53.7°F | 52.5°F |
| Jan 18 | 52.9°F | 53.5°F | 51.6°F |
| Jan 19 | 53.0°F | 53.5°F | 51.5°F |
| Jan 20 | 53.0°F | 53.5°F | 51.9°F |
| Jan 21 | 52.9°F | 53.7°F | 52.5°F |
| Jan 22 | 52.9°F | 53.7°F | 51.7°F |
| Jan 23 | 53.0°F | 54.2°F | 52.5°F |
| Jan 24 | 52.9°F | 54.1°F | 52.1°F |
| Jan 25 | 53.0°F | 54.7°F | 51.7°F |
| Jan 26 | 53.0°F | 55.0°F | 51.5°F |
| Jan 27 | 53.2°F | 55.5°F | 52.6°F |
| Jan 28 | 53.1°F | 55.7°F | 51.4°F |
| Jan 29 | 53.2°F | 56.4°F | 51.5°F |
| Jan 30 | 53.2°F | 55.2°F | 51.6°F |
| Jan 31 | 53.2°F | 54.9°F | 51.4°F |
In an average year, San Francisco offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in San Francisco was recorded on August 28, 2023, reaching a 67.4°F. While the coldest temperature occurred on March 4, 2023, dipping to 49.3°F. The average readings by season are 53.7°F in Winter, 56.2°F in Spring, 60.9°F in Summer, and 60.7°F in Autumn.
January's temperature is a dip compared to warmer December at 54.4°F and February at 53.9°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Oakland |
54.3°F
|
8mi |
| Redwood City |
55.5°F
|
22mi |
| San Jose |
55.7°F
|
42mi |
* current water temperature in this city
** straight line distance from San Francisco