Key West in August
Find out everything about the water temperature in Key West in August. Average, minimum and maximum recorded temperatures as well as daily temperature in August for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in August
Minimum:
84.9 °F
Average:
87.2 °F
Maximum:
91.4 °F
Sea water temperature in Key West in August
In the city of Key West, the month of August is a great time for swimming. The minimum recorded temperature during this month was 84.9°F on August 31, 2021, with an average temperature being 87.2°F and a maximum temperature reaching 91.4°F on August 12, 2023.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Aug 1 | 87.4°F | 89.3°F | 88.6°F |
| Aug 2 | 87.2°F | 88.6°F | 88.7°F |
| Aug 3 | 87.1°F | 88.7°F | 89.0°F |
| Aug 4 | 87.1°F | 88.3°F | 89.5°F |
| Aug 5 | 87.0°F | 87.9°F | 88.7°F |
| Aug 6 | 87.0°F | 87.2°F | 89.7°F |
| Aug 7 | 87.1°F | 86.3°F | 89.6°F |
| Aug 8 | 87.2°F | 87.0°F | 89.3°F |
| Aug 9 | 87.3°F | 87.2°F | 89.9°F |
| Aug 10 | 87.4°F | 87.4°F | 90.6°F |
| Aug 11 | 87.6°F | 87.6°F | 91.1°F |
| Aug 12 | 87.7°F | 87.6°F | 91.4°F |
| Aug 13 | 87.7°F | 87.6°F | 90.6°F |
| Aug 14 | 87.6°F | 87.5°F | 90.1°F |
| Aug 15 | 87.5°F | 87.4°F | 90.5°F |
| Aug 16 | 87.7°F | 88.6°F | 90.4°F |
| Aug 17 | 87.6°F | 88.4°F | 89.7°F |
| Aug 18 | 87.6°F | 88.5°F | 89.2°F |
| Aug 19 | 87.4°F | 87.9°F | 89.0°F |
| Aug 20 | 87.4°F | 88.0°F | 88.6°F |
| Aug 21 | 87.5°F | 88.0°F | 88.5°F |
| Aug 22 | 87.4°F | 88.4°F | 87.4°F |
| Aug 23 | 87.1°F | 87.7°F | 86.6°F |
| Aug 24 | 87.4°F | 88.5°F | 87.2°F |
| Aug 25 | 87.2°F | 88.3°F | 86.0°F |
| Aug 26 | 87.0°F | 87.6°F | 86.5°F |
| Aug 27 | 86.9°F | 87.4°F | 87.6°F |
| Aug 28 | 86.8°F | 87.0°F | 87.6°F |
| Aug 29 | 86.6°F | 86.8°F | 87.4°F |
| Aug 30 | 86.5°F | 86.2°F | 87.5°F |
| Aug 31 | 86.3°F | 86.3°F | 86.5°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.
In August, the temperature is higher than July's average of 86.9°F and September's average of 86.2°F.