Water temperature in San Juan
81.9
°F
May 13, 10:03
Trend:
stableYesterday:
81.9°FTomorrow:
81.9°F
Sunrise:
Sunset:
Day Length:
12 h. 58 min.San Juan in May
Minimum:
80.5°FAverage:
81.0°FMaximum:
81.9°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 81.9°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 1.1°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 stay about the same.Recent sea temperature and forecast
The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 82.5°F on 2023, while the historical minimum was 79.3°F on 2018.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Apr 29 | 81.3°F | 81.9°F | 80.8°F |
| Apr 30 | 81.4°F | 81.7°F | 80.9°F |
| May 1 | 81.6°F | 81.2°F | 80.7°F |
| May 2 | 81.4°F | 80.7°F | 80.6°F |
| May 3 | 81.2°F | 80.6°F | 80.6°F |
| May 4 | 80.8°F | 80.9°F | 80.7°F |
| May 5 | 81.2°F | 82.1°F | 80.9°F |
| May 6 | 81.3°F | 82.1°F | 80.9°F |
| May 7 | 81.1°F | 82.5°F | 81.0°F |
| May 8 | 81.5°F | 82.4°F | 81.1°F |
| May 9 | 82.0°F | 82.3°F | 80.9°F |
| May 10 | 82.2°F | 82.6°F | 81.1°F |
| May 11 | 81.9°F | 82.4°F | 80.8°F |
| May 12 | 81.9°F | 82.3°F | 80.8°F |
| May 13 | 81.9°F | 82.4°F | 80.8°F |
| May 14 | 81.9°F | 82.4°F | 80.8°F |
| May 15 | 82.1°F | 83.2°F | 81.0°F |
| May 16 | 82.1°F | 83.1°F | 81.0°F |
| May 17 | 82.2°F | 83.2°F | 81.1°F |
| May 18 | 82.5°F | 83.2°F | 81.4°F |
| May 19 | 82.6°F | 83.9°F | 81.5°F |
| May 20 | 82.7°F | 84.2°F | 81.6°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.