Water temperature in San Juan
83.8
°F
July 28, 20:46
Trend:
stableYesterday:
83.9°FTomorrow:
84.0°F
Sunrise:
Sunset:
Day Length:
13 h. 0 min.San Juan in August
Minimum:
80.5°FAverage:
81.0°FMaximum:
81.9°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 83.8°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 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 closely matches the previous two weeks' average, indicating a stable trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 84.5°F on 2024, while the historical minimum was 82.1°F on 2015.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Jul 14 | 83.2°F | 84.6°F | 83.4°F |
| Jul 15 | 83.3°F | 85.0°F | 83.3°F |
| Jul 16 | 83.7°F | 85.0°F | 83.4°F |
| Jul 17 | 83.6°F | 84.9°F | 83.4°F |
| Jul 18 | 83.6°F | 84.9°F | 83.4°F |
| Jul 19 | 84.0°F | 85.0°F | 83.5°F |
| Jul 20 | 83.9°F | 84.1°F | 83.3°F |
| Jul 21 | 83.9°F | 83.9°F | 83.4°F |
| Jul 22 | 84.0°F | 84.2°F | 83.4°F |
| Jul 23 | 84.0°F | 84.0°F | 83.4°F |
| Jul 24 | 84.0°F | 83.8°F | 83.4°F |
| Jul 25 | 83.9°F | 84.2°F | 83.4°F |
| Jul 26 | 83.9°F | 84.1°F | 83.4°F |
| Jul 27 | 83.9°F | 84.4°F | 83.4°F |
| Jul 28 | 83.8°F | 84.5°F | 83.4°F |
| Jul 29 | 84.0°F | 84.7°F | 83.6°F |
| Jul 30 | 84.0°F | 85.1°F | 83.7°F |
| Jul 31 | 83.9°F | 85.3°F | 83.6°F |
| Aug 1 | 83.9°F | 85.2°F | 83.5°F |
| Aug 2 | 84.0°F | 84.8°F | 83.6°F |
| Aug 3 | 84.1°F | 85.0°F | 83.8°F |
| Aug 4 | 84.2°F | 84.8°F | 83.8°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.