Water temperature in San Juan
84.3
°F
August 22, 10:28
Trend:
stableYesterday:
84.3°FTomorrow:
84.2°F
Sunrise:
Sunset:
Day Length:
12 h. 38 min.San Juan in August
Minimum:
81.4°FAverage:
82.2°FMaximum:
83.1°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 84.3°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 1.5°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 slightly 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 87.1°F on 2017, while the historical minimum was 84.8°F on 2025.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Aug 8 | 85.6°F | 84.8°F | 85.6°F |
| Aug 9 | 85.5°F | 84.9°F | 85.7°F |
| Aug 10 | 85.2°F | 84.8°F | 85.6°F |
| Aug 11 | 85.1°F | 84.9°F | 85.7°F |
| Aug 12 | 84.9°F | 84.7°F | 85.7°F |
| Aug 13 | 84.6°F | 84.9°F | 85.7°F |
| Aug 14 | 84.8°F | 85.0°F | 85.9°F |
| Aug 15 | 85.1°F | 85.2°F | 86.1°F |
| Aug 16 | 85.7°F | 85.2°F | 86.4°F |
| Aug 17 | 86.1°F | 85.2°F | 86.3°F |
| Aug 18 | 84.7°F | 85.1°F | 86.0°F |
| Aug 19 | 84.6°F | 85.0°F | 85.8°F |
| Aug 20 | 84.6°F | 84.8°F | 85.7°F |
| Aug 21 | 84.3°F | 84.9°F | 85.8°F |
| Aug 22 | 84.3°F | 84.8°F | 85.8°F |
| Aug 23 | 84.2°F | 84.9°F | 85.7°F |
| Aug 24 | 84.0°F | 84.8°F | 85.5°F |
| Aug 25 | 83.9°F | 84.8°F | 85.4°F |
| Aug 26 | 84.0°F | 84.8°F | 85.5°F |
| Aug 27 | 83.8°F | 84.7°F | 85.3°F |
| Aug 28 | 83.8°F | 84.6°F | 85.2°F |
| Aug 29 | 83.9°F | 85.4°F | 85.4°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** |
|---|---|---|
| Santo Domingo |
84.3°F
|
8mi |
| San Sebastian |
84.2°F
|
10mi |
| Santa Maria |
84.2°F
|
26mi |
| Burgos |
84.2°F
|
28mi |
| Santiago |
84.2°F
|
31mi |
| Santa Maria |
84.1°F
|
55mi |
| Burgos |
84.5°F
|
55mi |
| Pamplona |
84.6°F
|
77mi |
* current water temperature in this city
** straight line distance from San Juan