Water temperature in San Juan
84.7
°F
April 19, 10:50
Trend:
stableYesterday:
84.8°FTomorrow:
85.0°F
Sunrise:
Sunset:
Day Length:
12 h. 32 min.San Juan in April
Minimum:
81.7°FAverage:
82.6°FMaximum:
83.8°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 84.7°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 about the same as 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
The water temperature today is above average for the last two weeks, showing a small increase in temperature. 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 86.0°F on 2024, while the historical minimum was 83.8°F on 2015.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Apr 5 | 83.2°F | 85.1°F | 83.7°F |
| Apr 6 | 83.8°F | 84.5°F | 83.7°F |
| Apr 7 | 83.8°F | 84.7°F | 83.9°F |
| Apr 8 | 83.6°F | 84.7°F | 83.9°F |
| Apr 9 | 84.3°F | 85.3°F | 84.0°F |
| Apr 10 | 84.5°F | 85.4°F | 84.2°F |
| Apr 11 | 84.5°F | 85.1°F | 84.3°F |
| Apr 12 | 85.4°F | 85.0°F | 84.4°F |
| Apr 13 | 85.5°F | 85.4°F | 84.5°F |
| Apr 14 | 85.7°F | 86.1°F | 84.7°F |
| Apr 15 | 84.7°F | 85.8°F | 84.6°F |
| Apr 16 | 84.5°F | 86.5°F | 84.6°F |
| Apr 17 | 84.3°F | 86.0°F | 84.7°F |
| Apr 18 | 84.8°F | 86.0°F | 84.8°F |
| Apr 19 | 84.7°F | 86.0°F | 84.8°F |
| Apr 20 | 85.0°F | 86.3°F | 85.0°F |
| Apr 21 | 85.1°F | 86.3°F | 85.1°F |
| Apr 22 | 85.3°F | 86.3°F | 85.3°F |
| Apr 23 | 85.3°F | 86.2°F | 85.3°F |
| Apr 24 | 85.3°F | 86.8°F | 85.3°F |
| Apr 25 | 85.3°F | 86.7°F | 85.4°F |
| Apr 26 | 85.4°F | 86.8°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.