Water temperature in Key West
87.2
°F
September 17, 15:07
Trend:
stableYesterday:
87.7°FTomorrow:
87.2°F
Sunrise:
Sunset:
Day Length:
12 h. 15 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 87.2°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 0.7°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 stay about the same.Recent sea temperature and forecast
The water temperature today is above average for the last two weeks, showing a small increase in temperature. 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 89.6°F on 2024, while the historical minimum was 85.4°F on 2017.
Daily water temperature in Key West
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Sep 3 | 88.5°F | 86.1°F | 86.6°F |
| Sep 4 | 88.3°F | 86.7°F | 86.6°F |
| Sep 5 | 87.8°F | 87.2°F | 86.5°F |
| Sep 6 | 87.2°F | 87.3°F | 86.6°F |
| Sep 7 | 85.4°F | 87.4°F | 86.3°F |
| Sep 8 | 85.3°F | 88.0°F | 86.5°F |
| Sep 9 | 86.6°F | 87.6°F | 86.7°F |
| Sep 10 | 86.7°F | 87.3°F | 86.7°F |
| Sep 11 | 86.6°F | 88.1°F | 86.5°F |
| Sep 12 | 87.2°F | 89.0°F | 86.7°F |
| Sep 13 | 86.8°F | 88.3°F | 86.4°F |
| Sep 14 | 86.9°F | 88.4°F | 86.5°F |
| Sep 15 | 86.9°F | 88.8°F | 86.4°F |
| Sep 16 | 87.7°F | 89.6°F | 86.7°F |
| Sep 17 | 87.2°F | 89.6°F | 86.5°F |
| Sep 18 | 87.2°F | 88.5°F | 86.5°F |
| Sep 19 | 87.2°F | 88.1°F | 86.5°F |
| Sep 20 | 87.2°F | 87.8°F | 86.4°F |
| Sep 21 | 87.2°F | 87.7°F | 86.5°F |
| Sep 22 | 87.2°F | 88.3°F | 86.5°F |
| Sep 23 | 87.1°F | 88.8°F | 86.4°F |
| Sep 24 | 87.0°F | 88.1°F | 86.2°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.