Water temperature in San Diego
73.8
°F
September 23, 01:51
Trend:
decreasingYesterday:
74.7°FTomorrow:
73.5°F
Sunrise:
Sunset:
Day Length:
12 h. 7 min.San Diego in September
Minimum:
56.4°FAverage:
59.5°FMaximum:
62.2°FSea water temperature in San Diego today
As of now, in San Diego, the water temperature is 73.8°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 6.6°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 reading indicates a minor change compared to the average water temperature of the last two weeks, but the overall trend remains steady. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 70.9°F on 2019, while the historical minimum was 63.5°F on 2025.
Daily water temperature in San Diego
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Sep 9 | 71.9°F | 69.4°F | 70.1°F |
| Sep 10 | 72.2°F | 68.9°F | 70.0°F |
| Sep 11 | 72.7°F | 68.1°F | 70.0°F |
| Sep 12 | 73.4°F | 67.1°F | 69.8°F |
| Sep 13 | 73.7°F | 66.8°F | 69.4°F |
| Sep 14 | 73.9°F | 67.0°F | 69.2°F |
| Sep 15 | 73.6°F | 67.5°F | 69.1°F |
| Sep 16 | 73.7°F | 67.8°F | 69.1°F |
| Sep 17 | 74.5°F | 67.1°F | 69.0°F |
| Sep 18 | 74.4°F | 67.4°F | 68.7°F |
| Sep 19 | 74.7°F | 66.9°F | 68.5°F |
| Sep 20 | 74.8°F | 67.4°F | 68.2°F |
| Sep 21 | 75.0°F | 66.8°F | 68.3°F |
| Sep 22 | 74.7°F | 65.2°F | 68.2°F |
| Sep 23 | 73.8°F | 63.5°F | 67.2°F |
| Sep 24 | 73.5°F | 63.1°F | 67.0°F |
| Sep 25 | 73.3°F | 63.9°F | 66.7°F |
| Sep 26 | 73.1°F | 64.4°F | 66.6°F |
| Sep 27 | 73.3°F | 63.9°F | 66.7°F |
| Sep 28 | 73.3°F | 64.9°F | 66.7°F |
| Sep 29 | 73.6°F | 65.8°F | 67.0°F |
| Sep 30 | 73.9°F | 67.8°F | 67.3°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.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Tijuana |
73.4°F
|
17mi |
| Oceanside |
73.8°F
|
35mi |
| Laguna Beach |
73.7°F
|
67mi |
* current water temperature in this city
** straight line distance from San Diego