Water temperature in Key West
89.5
°F
August 25, 15:20
Trend:
decreasingYesterday:
89.8°FTomorrow:
89.3°F
Sunrise:
Sunset:
Day Length:
12 h. 47 min.Key West in September
Minimum:
71.4°FAverage:
73.9°FMaximum:
76.2°FSea water temperature in Key West today
As of now, in Key West, the water temperature is 89.5°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 2.3°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 fall 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 88.3°F on 2024, while the historical minimum was 86.0°F on 2023.
Daily water temperature in Key West
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Aug 11 | 88.6°F | 87.6°F | 87.6°F |
| Aug 12 | 86.9°F | 87.6°F | 87.6°F |
| Aug 13 | 87.3°F | 87.6°F | 87.6°F |
| Aug 14 | 86.9°F | 87.4°F | 87.5°F |
| Aug 15 | 87.0°F | 87.4°F | 87.4°F |
| Aug 16 | 88.7°F | 88.6°F | 87.8°F |
| Aug 17 | 88.1°F | 88.4°F | 87.6°F |
| Aug 18 | 88.7°F | 88.5°F | 87.7°F |
| Aug 19 | 89.3°F | 87.9°F | 87.6°F |
| Aug 20 | 89.5°F | 88.0°F | 87.6°F |
| Aug 21 | 89.5°F | 88.0°F | 87.6°F |
| Aug 22 | 89.4°F | 88.4°F | 87.5°F |
| Aug 23 | 90.6°F | 87.7°F | 87.4°F |
| Aug 24 | 89.8°F | 88.5°F | 87.5°F |
| Aug 25 | 89.5°F | 88.3°F | 87.2°F |
| Aug 26 | 89.3°F | 87.6°F | 87.0°F |
| Aug 27 | 89.2°F | 87.4°F | 86.9°F |
| Aug 28 | 89.1°F | 87.0°F | 86.8°F |
| Aug 29 | 89.0°F | 86.8°F | 86.6°F |
| Aug 30 | 88.8°F | 86.2°F | 86.5°F |
| Aug 31 | 88.6°F | 86.3°F | 86.3°F |
| Sep 1 | 88.8°F | 86.5°F | 86.5°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.