Water temperature in San Juan
82.0
°F
December 22, 13:47
Trend:
decreasingYesterday:
82.1°FTomorrow:
81.8°F
Sunrise:
Sunset:
Day Length:
11 h. 19 min.San Juan in December
Minimum:
77.6°FAverage:
80.1°FMaximum:
81.4°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 82.0°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.5°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 slightly 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 82.4°F on 2023, while the historical minimum was 80.5°F on 2014.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Dec 8 | 83.9°F | 82.8°F | 82.6°F |
| Dec 9 | 83.5°F | 82.8°F | 82.4°F |
| Dec 10 | 83.1°F | 83.3°F | 82.2°F |
| Dec 11 | 83.2°F | 83.5°F | 82.3°F |
| Dec 12 | 83.1°F | 83.4°F | 82.3°F |
| Dec 13 | 83.0°F | 83.4°F | 82.3°F |
| Dec 14 | 83.3°F | 83.4°F | 82.3°F |
| Dec 15 | 82.8°F | 83.0°F | 82.1°F |
| Dec 16 | 82.6°F | 82.7°F | 82.0°F |
| Dec 17 | 82.6°F | 82.7°F | 82.0°F |
| Dec 18 | 82.5°F | 82.6°F | 81.8°F |
| Dec 19 | 82.4°F | 82.3°F | 81.6°F |
| Dec 20 | 82.3°F | 82.2°F | 81.5°F |
| Dec 21 | 82.1°F | 82.7°F | 81.6°F |
| Dec 22 | 82.0°F | 82.4°F | 81.5°F |
| Dec 23 | 81.8°F | 82.3°F | 81.3°F |
| Dec 24 | 81.8°F | 82.3°F | 81.3°F |
| Dec 25 | 81.9°F | 82.4°F | 81.4°F |
| Dec 26 | 81.9°F | 82.1°F | 81.4°F |
| Dec 27 | 81.7°F | 82.2°F | 81.2°F |
| Dec 28 | 81.5°F | 82.3°F | 81.1°F |
| Dec 29 | 81.5°F | 82.2°F | 81.1°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.