Water temperature in San Juan
68.7
°F
October 9, 08:36
Trend:
stableYesterday:
67.4°FTomorrow:
68.6°F
Sunrise:
Sunset:
Day Length:
12 h. 20 min.San Juan in October
Minimum:
60.9°FAverage:
65.6°FMaximum:
69.4°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 68.7°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 10.7°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.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 61.6°F on 2018, while the historical minimum was 55.1°F on 2022.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Sep 25 | 66.2°F | 57.7°F | 59.0°F |
| Sep 26 | 65.8°F | 57.9°F | 58.8°F |
| Sep 27 | 65.7°F | 58.6°F | 58.9°F |
| Sep 28 | 66.0°F | 58.3°F | 59.0°F |
| Sep 29 | 66.3°F | 58.7°F | 58.6°F |
| Sep 30 | 66.3°F | 58.2°F | 58.6°F |
| Oct 1 | 65.8°F | 57.1°F | 58.6°F |
| Oct 2 | 66.2°F | 56.4°F | 58.6°F |
| Oct 3 | 66.3°F | 58.0°F | 58.8°F |
| Oct 4 | 65.8°F | 58.5°F | 58.5°F |
| Oct 5 | 66.5°F | 58.7°F | 58.8°F |
| Oct 6 | 66.3°F | 58.9°F | 58.6°F |
| Oct 7 | 67.0°F | 59.0°F | 58.8°F |
| Oct 8 | 67.4°F | 57.0°F | 58.9°F |
| Oct 9 | 68.7°F | 57.1°F | 58.0°F |
| Oct 10 | 68.6°F | 57.2°F | 57.9°F |
| Oct 11 | 68.4°F | 57.7°F | 57.7°F |
| Oct 12 | 68.5°F | 57.9°F | 57.8°F |
| Oct 13 | 68.6°F | 57.5°F | 57.9°F |
| Oct 14 | 68.9°F | 60.5°F | 58.2°F |
| Oct 15 | 68.8°F | 60.7°F | 58.1°F |
| Oct 16 | 68.7°F | 59.9°F | 58.0°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.