Water temperature in San Juan
83.8
°F
December 22, 13:00
Trend:
decreasingYesterday:
83.8°FTomorrow:
83.6°F
Sunrise:
Sunset:
Day Length:
11 h. 29 min.San Juan in December
Minimum:
79.2°FAverage:
81.7°FMaximum:
84.1°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 83.8°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. 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 84.3°F on 2020, while the historical minimum was 82.2°F on 2014.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Dec 8 | 84.4°F | 84.1°F | 84.1°F |
| Dec 9 | 84.2°F | 84.0°F | 84.1°F |
| Dec 10 | 83.9°F | 84.4°F | 83.9°F |
| Dec 11 | 84.7°F | 84.4°F | 84.1°F |
| Dec 12 | 84.5°F | 84.4°F | 84.1°F |
| Dec 13 | 84.4°F | 84.7°F | 84.1°F |
| Dec 14 | 84.8°F | 84.7°F | 84.1°F |
| Dec 15 | 84.5°F | 84.5°F | 83.9°F |
| Dec 16 | 84.4°F | 84.3°F | 83.8°F |
| Dec 17 | 84.3°F | 84.1°F | 83.8°F |
| Dec 18 | 84.1°F | 84.0°F | 83.6°F |
| Dec 19 | 84.1°F | 84.0°F | 83.5°F |
| Dec 20 | 83.9°F | 83.7°F | 83.3°F |
| Dec 21 | 83.8°F | 83.2°F | 83.3°F |
| Dec 22 | 83.8°F | 83.4°F | 83.2°F |
| Dec 23 | 83.6°F | 83.5°F | 83.1°F |
| Dec 24 | 83.5°F | 83.6°F | 83.0°F |
| Dec 25 | 83.6°F | 83.7°F | 83.0°F |
| Dec 26 | 83.4°F | 83.5°F | 82.9°F |
| Dec 27 | 83.3°F | 83.5°F | 82.8°F |
| Dec 28 | 83.3°F | 83.2°F | 82.7°F |
| Dec 29 | 83.4°F | 83.9°F | 82.9°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.