Water temperature in San Juan
59.9
°F
October 16, 09:54
Trend:
stableYesterday:
60.7°FTomorrow:
60.2°F
Sunrise:
Sunset:
Day Length:
12 h. 27 min.San Juan in October
Minimum:
60.9°FAverage:
66.1°FMaximum:
69.4°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 59.9°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 1.8°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 is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 60.9°F on 2015, while the historical minimum was 55.1°F on 2021.
Daily water temperature in San Juan
Date |
Current Year
actual* / forecast** |
last year | 10 years average |
---|---|---|---|
Oct 2 | 56.4°F | 56.8°F | 58.2°F |
Oct 3 | 58.0°F | 56.5°F | 58.4°F |
Oct 4 | 58.5°F | 56.9°F | 58.2°F |
Oct 5 | 58.7°F | 57.4°F | 58.5°F |
Oct 6 | 58.9°F | 57.8°F | 58.3°F |
Oct 7 | 59.0°F | 58.0°F | 58.4°F |
Oct 8 | 57.0°F | 58.4°F | 58.4°F |
Oct 9 | 57.1°F | 56.5°F | 58.3°F |
Oct 10 | 57.2°F | 56.9°F | 58.2°F |
Oct 11 | 57.7°F | 55.8°F | 58.1°F |
Oct 12 | 57.9°F | 55.8°F | 58.1°F |
Oct 13 | 57.5°F | 56.7°F | 58.2°F |
Oct 14 | 60.5°F | 57.7°F | 58.5°F |
Oct 15 | 60.7°F | 57.4°F | 58.4°F |
Oct 16 | 59.9°F | 57.3°F | 58.1°F |
Oct 17 | 60.2°F | 58.3°F | 58.4°F |
Oct 18 | 60.2°F | 59.0°F | 58.4°F |
Oct 19 | 59.9°F | 56.6°F | 58.2°F |
Oct 20 | 60.4°F | 57.1°F | 58.7°F |
Oct 21 | 60.2°F | 57.4°F | 58.5°F |
Oct 22 | 60.2°F | 57.3°F | 58.4°F |
Oct 23 | 60.2°F | 57.8°F | 58.4°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.