Water temperature in San Francisco
77.7
°F
March 18, 21:49
Trend:
decreasingYesterday:
78.0°FTomorrow:
77.4°F
Sunrise:
Sunset:
Day Length:
12 h. 4 min.San Francisco in March
Minimum:
71.6°FAverage:
78.2°FMaximum:
80.5°FSea water temperature in San Francisco today
As of now, in San Francisco, the water temperature is 77.7°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.9°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.Recent sea temperature and forecast
Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 77.6°F on 2016, while the historical minimum was 72.3°F on 2025.
Daily water temperature in San Francisco
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Mar 4 | 79.6°F | 75.0°F | 76.6°F |
| Mar 5 | 79.6°F | 75.9°F | 76.6°F |
| Mar 6 | 80.3°F | 76.4°F | 76.7°F |
| Mar 7 | 80.1°F | 75.5°F | 76.6°F |
| Mar 8 | 79.9°F | 75.8°F | 76.5°F |
| Mar 9 | 79.1°F | 74.9°F | 76.4°F |
| Mar 10 | 79.8°F | 74.3°F | 76.3°F |
| Mar 11 | 79.3°F | 73.5°F | 76.2°F |
| Mar 12 | 78.9°F | 73.3°F | 76.2°F |
| Mar 13 | 78.6°F | 73.9°F | 76.3°F |
| Mar 14 | 79.1°F | 74.3°F | 76.4°F |
| Mar 15 | 79.5°F | 73.7°F | 76.2°F |
| Mar 16 | 78.6°F | 73.3°F | 76.1°F |
| Mar 17 | 78.0°F | 72.4°F | 75.9°F |
| Mar 18 | 77.7°F | 72.3°F | 75.9°F |
| Mar 19 | 77.4°F | 72.1°F | 75.6°F |
| Mar 20 | 77.5°F | 73.0°F | 75.6°F |
| Mar 21 | 77.6°F | 72.0°F | 75.7°F |
| Mar 22 | 77.8°F | 72.0°F | 75.9°F |
| Mar 23 | 77.8°F | 72.2°F | 76.0°F |
| Mar 24 | 77.9°F | 71.9°F | 76.0°F |
| Mar 25 | 78.0°F | 72.2°F | 76.1°F |
* actual - actual temperature values
** forecast - projected values for the next week
Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.
Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.