Water temperature in San Juan
63.1
°F
May 30, 22:24
Trend:
decreasingYesterday:
63.5°FTomorrow:
63.0°F
Sunrise:
Sunset:
Day Length:
11 h. 17 min.San Juan in June
Minimum:
61.0°FAverage:
65.3°FMaximum:
69.5°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 63.1°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 2.5°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 stay about the same.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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 64.8°F on 2017, while the historical minimum was 57.1°F on 2022.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| May 16 | 61.5°F | 59.7°F | 61.2°F |
| May 17 | 62.5°F | 60.5°F | 61.3°F |
| May 18 | 61.8°F | 61.3°F | 61.2°F |
| May 19 | 63.2°F | 58.6°F | 61.0°F |
| May 20 | 63.2°F | 59.4°F | 61.3°F |
| May 21 | 63.2°F | 60.3°F | 61.1°F |
| May 22 | 63.3°F | 58.9°F | 61.0°F |
| May 23 | 64.0°F | 58.5°F | 60.7°F |
| May 24 | 64.1°F | 59.3°F | 60.9°F |
| May 25 | 64.0°F | 59.6°F | 61.2°F |
| May 26 | 64.3°F | 61.5°F | 61.4°F |
| May 27 | 63.2°F | 60.9°F | 61.2°F |
| May 28 | 63.6°F | 59.5°F | 61.2°F |
| May 29 | 63.5°F | 60.3°F | 60.8°F |
| May 30 | 63.1°F | 58.7°F | 60.6°F |
| May 31 | 63.0°F | 59.1°F | 60.5°F |
| Jun 1 | 63.1°F | 59.0°F | 60.6°F |
| Jun 2 | 63.1°F | 59.4°F | 60.7°F |
| Jun 3 | 63.2°F | 58.9°F | 60.7°F |
| Jun 4 | 62.9°F | 59.4°F | 60.5°F |
| Jun 5 | 63.1°F | 59.5°F | 60.7°F |
| Jun 6 | 62.9°F | 60.0°F | 60.5°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.