Water temperature in San Juan
60.0
°F
June 30, 18:46
Trend:
stableYesterday:
60.1°FTomorrow:
60.0°F
Sunrise:
Sunset:
Day Length:
11 h. 14 min.San Juan in July
Minimum:
60.0°FAverage:
65.9°FMaximum:
70.1°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 60.0°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. 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 stay about the same.Recent sea temperature and forecast
Today's water temperature closely matches the previous two weeks' average, indicating a stable trend. 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 64.5°F on 2015, while the historical minimum was 57.2°F on 2022.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Jun 16 | 58.0°F | 59.2°F | 60.7°F |
| Jun 17 | 58.7°F | 56.8°F | 60.2°F |
| Jun 18 | 60.6°F | 56.7°F | 60.4°F |
| Jun 19 | 60.6°F | 57.5°F | 60.2°F |
| Jun 20 | 60.5°F | 58.2°F | 60.3°F |
| Jun 21 | 60.7°F | 57.8°F | 60.2°F |
| Jun 22 | 60.6°F | 56.9°F | 60.0°F |
| Jun 23 | 60.8°F | 56.8°F | 60.1°F |
| Jun 24 | 60.2°F | 57.6°F | 60.2°F |
| Jun 25 | 60.2°F | 57.1°F | 60.2°F |
| Jun 26 | 60.2°F | 57.5°F | 60.1°F |
| Jun 27 | 60.4°F | 58.7°F | 60.2°F |
| Jun 28 | 60.2°F | 58.2°F | 60.3°F |
| Jun 29 | 60.1°F | 58.5°F | 59.9°F |
| Jun 30 | 60.0°F | 57.9°F | 59.9°F |
| Jul 1 | 60.0°F | 58.4°F | 59.9°F |
| Jul 2 | 59.7°F | 58.1°F | 59.6°F |
| Jul 3 | 59.7°F | 56.1°F | 59.6°F |
| Jul 4 | 59.7°F | 57.0°F | 59.6°F |
| Jul 5 | 60.0°F | 57.5°F | 59.9°F |
| Jul 6 | 59.7°F | 55.1°F | 59.6°F |
| Jul 7 | 59.7°F | 56.1°F | 59.6°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.