Water temperature in San Juan
84.0
°F
September 16, 07:39
Trend:
stableYesterday:
84.2°FTomorrow:
84.2°F
Sunrise:
Sunset:
Day Length:
12 h. 11 min.San Juan in September
Minimum:
80.7°FAverage:
82.1°FMaximum:
83.5°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 84.0°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 0.4°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 rise 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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 85.9°F on 2017, while the historical minimum was 83.4°F on 2015.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Sep 2 | 84.6°F | 85.1°F | 84.9°F |
| Sep 3 | 85.1°F | 85.2°F | 85.1°F |
| Sep 4 | 84.7°F | 85.8°F | 85.1°F |
| Sep 5 | 84.7°F | 85.2°F | 85.1°F |
| Sep 6 | 84.5°F | 85.2°F | 85.0°F |
| Sep 7 | 84.6°F | 85.2°F | 85.2°F |
| Sep 8 | 84.4°F | 85.1°F | 84.9°F |
| Sep 9 | 84.7°F | 85.6°F | 85.1°F |
| Sep 10 | 84.5°F | 85.2°F | 84.9°F |
| Sep 11 | 84.3°F | 85.2°F | 84.8°F |
| Sep 12 | 84.3°F | 85.0°F | 84.6°F |
| Sep 13 | 84.2°F | 84.9°F | 84.6°F |
| Sep 14 | 84.3°F | 84.7°F | 84.5°F |
| Sep 15 | 84.2°F | 84.6°F | 84.6°F |
| Sep 16 | 84.0°F | 84.4°F | 84.5°F |
| Sep 17 | 84.2°F | 84.3°F | 84.6°F |
| Sep 18 | 84.2°F | 84.4°F | 84.7°F |
| Sep 19 | 84.3°F | 84.4°F | 84.7°F |
| Sep 20 | 84.4°F | 84.4°F | 84.8°F |
| Sep 21 | 84.3°F | 84.3°F | 84.7°F |
| Sep 22 | 84.4°F | 85.0°F | 84.9°F |
| Sep 23 | 84.4°F | 85.4°F | 84.8°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 |
84.0°F
|
14mi |
| San Jose |
84.4°F
|
27mi |
| San Francisco |
83.6°F
|
38mi |
| San Jose |
85.6°F
|
51mi |
| San Francisco |
84.5°F
|
55mi |
* current water temperature in this city
** straight line distance from San Juan