Water temperature in San Juan
85.4
°F
June 29, 22:57
Trend:
decreasingYesterday:
85.6°FTomorrow:
85.3°F
Sunrise:
Sunset:
Day Length:
12 h. 56 min.San Juan in July
Minimum:
78.5°FAverage:
80.6°FMaximum:
81.9°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 85.4°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 1.2°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 considerably 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 87.9°F on 2024, while the historical minimum was 85.4°F on 2018.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Jun 15 | 87.3°F | 87.7°F | 86.9°F |
| Jun 16 | 87.3°F | 88.3°F | 87.2°F |
| Jun 17 | 87.4°F | 88.4°F | 87.3°F |
| Jun 18 | 87.4°F | 87.7°F | 87.4°F |
| Jun 19 | 87.0°F | 87.7°F | 87.4°F |
| Jun 20 | 87.0°F | 87.7°F | 87.4°F |
| Jun 21 | 86.8°F | 87.6°F | 87.3°F |
| Jun 22 | 86.6°F | 88.1°F | 87.2°F |
| Jun 23 | 86.4°F | 88.3°F | 87.3°F |
| Jun 24 | 86.5°F | 88.1°F | 87.2°F |
| Jun 25 | 86.2°F | 87.8°F | 87.0°F |
| Jun 26 | 85.9°F | 87.5°F | 86.9°F |
| Jun 27 | 85.7°F | 87.1°F | 86.5°F |
| Jun 28 | 85.6°F | 86.9°F | 86.4°F |
| Jun 29 | 85.4°F | 87.9°F | 86.5°F |
| Jun 30 | 85.3°F | 87.8°F | 86.5°F |
| Jul 1 | 85.5°F | 87.5°F | 86.6°F |
| Jul 2 | 85.4°F | 87.8°F | 86.6°F |
| Jul 3 | 85.5°F | 87.7°F | 86.7°F |
| Jul 4 | 85.3°F | 87.6°F | 86.5°F |
| Jul 5 | 85.3°F | 87.3°F | 86.4°F |
| Jul 6 | 85.1°F | 87.4°F | 86.3°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.