Key West in March
Find out everything about the water temperature in Key West in March. Average, minimum and maximum recorded temperatures as well as daily temperature in March for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in March
Minimum:
71.7 °F
Average:
76.2 °F
Maximum:
80.3 °F
Sea water temperature in Key West in March
In the city of Key West, the month of March is a great time for swimming. The minimum recorded temperature during this month was 71.7°F on March 2, 2016, with an average temperature being 76.2°F and a maximum temperature reaching 80.3°F on March 28, 2020.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Mar 1 | 75.6°F | 72.2°F | 78.9°F |
| Mar 2 | 75.7°F | 73.1°F | 78.5°F |
| Mar 3 | 75.7°F | 73.1°F | 78.2°F |
| Mar 4 | 75.9°F | 73.6°F | 78.5°F |
| Mar 5 | 75.9°F | 74.6°F | 79.5°F |
| Mar 6 | 76.0°F | 76.0°F | 79.2°F |
| Mar 7 | 76.1°F | 75.8°F | 80.1°F |
| Mar 8 | 75.8°F | 76.9°F | 79.7°F |
| Mar 9 | 75.6°F | 77.4°F | 79.8°F |
| Mar 10 | 75.2°F | 77.3°F | 78.9°F |
| Mar 11 | 75.5°F | 78.0°F | 78.7°F |
| Mar 12 | 75.8°F | 76.5°F | 78.2°F |
| Mar 13 | 76.0°F | 76.2°F | 78.9°F |
| Mar 14 | 76.2°F | 77.5°F | 80.0°F |
| Mar 15 | 76.2°F | 77.2°F | 79.1°F |
| Mar 16 | 76.1°F | 77.3°F | 77.5°F |
| Mar 17 | 76.5°F | 77.9°F | 77.3°F |
| Mar 18 | 76.5°F | 78.5°F | 76.5°F |
| Mar 19 | 76.8°F | 79.2°F | 76.8°F |
| Mar 20 | 77.0°F | 78.7°F | 77.6°F |
| Mar 21 | 76.7°F | 77.3°F | 76.4°F |
| Mar 22 | 76.3°F | 78.0°F | 74.7°F |
| Mar 23 | 76.0°F | 77.4°F | 74.9°F |
| Mar 24 | 76.0°F | 76.3°F | 75.6°F |
| Mar 25 | 76.4°F | 76.6°F | 76.6°F |
| Mar 26 | 76.5°F | 76.1°F | 77.7°F |
| Mar 27 | 76.8°F | 75.6°F | 79.0°F |
| Mar 28 | 77.1°F | 76.9°F | 79.2°F |
| Mar 29 | 77.1°F | 76.4°F | 79.7°F |
| Mar 30 | 77.0°F | 76.2°F | 80.0°F |
| Mar 31 | 77.1°F | 75.9°F | 80.2°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.
The average temperature in March is slightly warmer than February's average of 73.7°F. And in April, the temperature is expected to rise further, potentially reaching an average of 78.9°F.