Water temperature in San Juan
66.3
°F
April 20, 23:23
Trend:
stableYesterday:
64.1°FTomorrow:
66.3°F
Sunrise:
Sunset:
Day Length:
11 h. 41 min.San Juan in April
Minimum:
61.2°FAverage:
65.0°FMaximum:
68.5°FSea water temperature in San Juan today
As of now, in San Juan, the water temperature is 66.3°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 3.3°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 69.6°F on 2023, while the historical minimum was 58.1°F on 2022.
Daily water temperature in San Juan
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Apr 6 | 63.7°F | 60.1°F | 63.8°F |
| Apr 7 | 64.6°F | 60.6°F | 64.1°F |
| Apr 8 | 63.4°F | 60.4°F | 63.4°F |
| Apr 9 | 63.2°F | 63.1°F | 63.9°F |
| Apr 10 | 64.6°F | 60.4°F | 63.5°F |
| Apr 11 | 63.7°F | 61.1°F | 63.3°F |
| Apr 12 | 66.4°F | 62.1°F | 63.6°F |
| Apr 13 | 63.3°F | 63.1°F | 63.8°F |
| Apr 14 | 65.1°F | 61.0°F | 63.4°F |
| Apr 15 | 63.5°F | 60.5°F | 63.2°F |
| Apr 16 | 63.4°F | 58.6°F | 62.9°F |
| Apr 17 | 63.2°F | 58.8°F | 62.6°F |
| Apr 18 | 63.0°F | 58.5°F | 62.5°F |
| Apr 19 | 64.1°F | 59.5°F | 63.1°F |
| Apr 20 | 66.3°F | 59.8°F | 63.0°F |
| Apr 21 | 66.3°F | 62.0°F | 63.0°F |
| Apr 22 | 66.4°F | 61.9°F | 63.1°F |
| Apr 23 | 66.5°F | 61.6°F | 63.2°F |
| Apr 24 | 65.9°F | 61.4°F | 62.6°F |
| Apr 25 | 65.7°F | 59.3°F | 62.4°F |
| Apr 26 | 65.4°F | 57.9°F | 62.2°F |
| Apr 27 | 65.2°F | 58.6°F | 61.9°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.