Water temperature in San Juan
83.8
°F
May 19, 19:41
Trend:
decreasingYesterday:
85.0°FTomorrow:
83.8°F
Sunrise:
Sunset:
Day Length:
12 h. 34 min.San Juan in May
Minimum:
80.9°FAverage:
82.1°FMaximum:
83.3°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 0.7°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 slightly varies from the average of the past two weeks. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 85.6°F on 2023, while the historical minimum was 83.2°F on 2016.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| May 5 | 83.4°F | 84.3°F | 83.8°F |
| May 6 | 83.3°F | 84.3°F | 83.8°F |
| May 7 | 83.4°F | 84.3°F | 84.0°F |
| May 8 | 82.6°F | 85.0°F | 83.8°F |
| May 9 | 83.7°F | 85.9°F | 83.9°F |
| May 10 | 83.7°F | 85.8°F | 83.7°F |
| May 11 | 83.9°F | 85.7°F | 83.9°F |
| May 12 | 84.0°F | 85.3°F | 84.0°F |
| May 13 | 84.1°F | 85.4°F | 84.1°F |
| May 14 | 84.2°F | 85.6°F | 84.2°F |
| May 15 | 84.6°F | 86.0°F | 84.2°F |
| May 16 | 84.5°F | 85.7°F | 84.2°F |
| May 17 | 84.9°F | 85.3°F | 84.3°F |
| May 18 | 85.0°F | 85.8°F | 84.5°F |
| May 19 | 83.8°F | 85.6°F | 84.6°F |
| May 20 | 83.8°F | 85.6°F | 84.6°F |
| May 21 | 84.0°F | 85.6°F | 84.7°F |
| May 22 | 84.0°F | 85.4°F | 84.7°F |
| May 23 | 84.1°F | 85.4°F | 84.8°F |
| May 24 | 84.1°F | 85.3°F | 84.9°F |
| May 25 | 84.2°F | 85.6°F | 84.9°F |
| May 26 | 84.3°F | 85.6°F | 85.0°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.
