Water temperature in San Juan
86.6
°F
September 18, 07:28
Trend:
increasingYesterday:
86.5°FTomorrow:
86.9°F
Sunrise:
Sunset:
Day Length:
12 h. 12 min.San Juan in September
Minimum:
80.6°FAverage:
82.0°FMaximum:
83.2°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 86.6°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 1.0°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 rise a bit.Recent sea temperature and forecast
Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 87.4°F on 2020, while the historical minimum was 83.5°F on 2018.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Sep 4 | 85.0°F | 86.9°F | 85.2°F |
| Sep 5 | 85.0°F | 86.8°F | 85.4°F |
| Sep 6 | 85.0°F | 86.7°F | 85.4°F |
| Sep 7 | 84.9°F | 86.5°F | 85.3°F |
| Sep 8 | 84.8°F | 86.3°F | 85.3°F |
| Sep 9 | 85.2°F | 86.1°F | 85.5°F |
| Sep 10 | 84.7°F | 86.0°F | 85.4°F |
| Sep 11 | 84.8°F | 85.9°F | 85.4°F |
| Sep 12 | 85.2°F | 85.7°F | 85.4°F |
| Sep 13 | 85.9°F | 85.9°F | 85.5°F |
| Sep 14 | 85.8°F | 85.9°F | 85.6°F |
| Sep 15 | 85.9°F | 86.0°F | 85.6°F |
| Sep 16 | 85.9°F | 86.0°F | 85.6°F |
| Sep 17 | 86.5°F | 86.0°F | 85.6°F |
| Sep 18 | 86.6°F | 86.1°F | 85.7°F |
| Sep 19 | 86.9°F | 86.1°F | 86.0°F |
| Sep 20 | 86.8°F | 86.0°F | 85.9°F |
| Sep 21 | 86.8°F | 85.9°F | 85.8°F |
| Sep 22 | 86.8°F | 85.8°F | 85.8°F |
| Sep 23 | 86.9°F | 85.7°F | 85.9°F |
| Sep 24 | 86.8°F | 85.1°F | 85.9°F |
| Sep 25 | 87.0°F | 84.8°F | 86.0°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 |
86.6°F
|
8mi |
| San Sebastian |
86.8°F
|
10mi |
| Santa Maria |
86.2°F
|
26mi |
| Burgos |
86.4°F
|
28mi |
| Santiago |
86.5°F
|
31mi |
| Santa Maria |
86.7°F
|
55mi |
| Burgos |
86.6°F
|
55mi |
| Pamplona |
85.9°F
|
77mi |
* current water temperature in this city
** straight line distance from San Juan