Water temperature in San Juan
63.8
°F
February 16, 10:29
Trend:
stableYesterday:
65.8°FTomorrow:
63.8°F
Sunrise:
Sunset:
Day Length:
12 h. 35 min.San Juan in February
Minimum:
61.5°FAverage:
64.8°FMaximum:
66.9°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 63.8°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 3.2°F lower 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 stay about the same.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 minimum temperature for this date. The maximum temperature recorded for this date was 71.7°F on 2025, while the historical minimum was 61.5°F on 2022.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Feb 2 | 67.4°F | 65.9°F | 66.8°F |
| Feb 3 | 66.9°F | 66.8°F | 67.2°F |
| Feb 4 | 67.6°F | 63.6°F | 66.8°F |
| Feb 5 | 68.7°F | 65.5°F | 67.3°F |
| Feb 6 | 69.4°F | 65.9°F | 67.7°F |
| Feb 7 | 68.7°F | 66.1°F | 67.6°F |
| Feb 8 | 65.6°F | 66.6°F | 67.1°F |
| Feb 9 | 64.9°F | 66.6°F | 66.7°F |
| Feb 10 | 68.3°F | 66.9°F | 67.5°F |
| Feb 11 | 66.9°F | 67.5°F | 67.4°F |
| Feb 12 | 67.0°F | 68.3°F | 67.4°F |
| Feb 13 | 68.3°F | 68.3°F | 67.1°F |
| Feb 14 | 64.9°F | 68.4°F | 66.4°F |
| Feb 15 | 65.8°F | 69.9°F | 66.8°F |
| Feb 16 | 63.8°F | 71.7°F | 66.9°F |
| Feb 17 | 63.8°F | 69.2°F | 67.0°F |
| Feb 18 | 63.3°F | 68.2°F | 66.5°F |
| Feb 19 | 63.3°F | 68.5°F | 66.4°F |
| Feb 20 | 63.5°F | 68.0°F | 66.7°F |
| Feb 21 | 63.8°F | 69.6°F | 67.0°F |
| Feb 22 | 63.8°F | 66.2°F | 67.0°F |
| Feb 23 | 64.3°F | 69.3°F | 67.5°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.