Water temperature in San Juan
84.1
°F
December 21, 23:25
Trend:
decreasingYesterday:
84.1°FTomorrow:
83.9°F
Sunrise:
Sunset:
Day Length:
11 h. 32 min.San Juan in December
Minimum:
79.4°FAverage:
81.8°FMaximum:
83.7°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 84.1°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 1.3°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
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 83.9°F on 2020, while the historical minimum was 81.2°F on 2015.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Dec 7 | 83.7°F | 84.1°F | 83.5°F |
| Dec 8 | 83.8°F | 83.9°F | 83.5°F |
| Dec 9 | 83.3°F | 83.8°F | 83.4°F |
| Dec 10 | 83.5°F | 83.4°F | 83.4°F |
| Dec 11 | 83.7°F | 83.8°F | 83.5°F |
| Dec 12 | 83.4°F | 83.6°F | 83.4°F |
| Dec 13 | 83.8°F | 83.8°F | 83.4°F |
| Dec 14 | 83.6°F | 84.2°F | 83.3°F |
| Dec 15 | 83.9°F | 83.7°F | 83.2°F |
| Dec 16 | 84.3°F | 83.6°F | 83.1°F |
| Dec 17 | 84.1°F | 83.5°F | 83.1°F |
| Dec 18 | 84.1°F | 83.4°F | 83.1°F |
| Dec 19 | 84.3°F | 83.3°F | 83.1°F |
| Dec 20 | 84.1°F | 83.2°F | 82.9°F |
| Dec 21 | 84.1°F | 83.2°F | 82.7°F |
| Dec 22 | 83.9°F | 83.0°F | 82.6°F |
| Dec 23 | 83.8°F | 82.9°F | 82.5°F |
| Dec 24 | 83.8°F | 82.7°F | 82.5°F |
| Dec 25 | 83.7°F | 82.5°F | 82.4°F |
| Dec 26 | 83.6°F | 82.3°F | 82.3°F |
| Dec 27 | 83.5°F | 81.9°F | 82.2°F |
| Dec 28 | 83.4°F | 81.9°F | 82.1°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.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| San Francisco |
84.3°F
|
14mi |
| San Jose |
83.9°F
|
27mi |
| San Francisco |
83.8°F
|
38mi |
| San Jose |
84.3°F
|
51mi |
| San Francisco |
84.0°F
|
55mi |
* current water temperature in this city
** straight line distance from San Juan