Key West in October
Find out everything about the water temperature in Key West in October. Average, minimum and maximum recorded temperatures as well as daily temperature in October for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in October
Minimum:
78.0 °F
Average:
83.2 °F
Maximum:
86.9 °F
Sea water temperature in Key West in October
In the city of Key West, the month of October is a great time for swimming. The minimum recorded temperature during this month was 78.0°F on October 25, 2022, with an average temperature being 83.2°F and a maximum temperature reaching 86.9°F on October 4, 2024.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Oct 1 | 84.8°F | 85.5°F | 85.7°F |
| Oct 2 | 84.8°F | 85.9°F | 86.1°F |
| Oct 3 | 84.9°F | 86.5°F | 85.7°F |
| Oct 4 | 84.7°F | 86.9°F | 84.8°F |
| Oct 5 | 84.4°F | 86.5°F | 84.6°F |
| Oct 6 | 84.5°F | 86.6°F | 84.8°F |
| Oct 7 | 84.3°F | 85.9°F | 85.7°F |
| Oct 8 | 84.2°F | 85.6°F | 85.8°F |
| Oct 9 | 84.2°F | 84.9°F | 86.0°F |
| Oct 10 | 84.2°F | 84.9°F | 85.8°F |
| Oct 11 | 84.0°F | 83.8°F | 85.5°F |
| Oct 12 | 84.0°F | 82.8°F | 85.9°F |
| Oct 13 | 84.0°F | 82.6°F | 86.2°F |
| Oct 14 | 84.0°F | 82.5°F | 86.5°F |
| Oct 15 | 83.8°F | 82.2°F | 86.1°F |
| Oct 16 | 83.9°F | 83.1°F | 85.8°F |
| Oct 17 | 83.8°F | 83.2°F | 85.2°F |
| Oct 18 | 83.5°F | 82.8°F | 83.5°F |
| Oct 19 | 83.2°F | 82.6°F | 81.1°F |
| Oct 20 | 82.8°F | 81.3°F | 81.4°F |
| Oct 21 | 82.4°F | 80.6°F | 80.8°F |
| Oct 22 | 82.0°F | 80.5°F | 80.1°F |
| Oct 23 | 81.8°F | 80.3°F | 80.6°F |
| Oct 24 | 81.7°F | 80.0°F | 80.3°F |
| Oct 25 | 81.6°F | 80.3°F | 80.5°F |
| Oct 26 | 81.6°F | 81.0°F | 80.6°F |
| Oct 27 | 81.4°F | 80.8°F | 80.4°F |
| Oct 28 | 81.3°F | 80.8°F | 79.4°F |
| Oct 29 | 81.4°F | 80.5°F | 79.4°F |
| Oct 30 | 81.2°F | 79.8°F | 79.4°F |
| Oct 31 | 81.2°F | 79.3°F | 80.3°F |
In Key West, the water temperature is comfortable for swimming all year round.
The warmest water in Key West was recorded on August 12, 2023, reaching a 91.4°F. While the coldest temperature occurred on February 4, 2021, dipping to 67.5°F. The average readings by season are 74.4°F in Winter, 79.0°F in Spring, 86.3°F in Summer, and 82.9°F in Autumn.
October's average temperature is a slight drop from September's average of 86.2°F. In November, the temperature is expected to decrease further, potentially averaging around 79.2°F.