Key West in January
Find out everything about the water temperature in Key West in January. Average, minimum and maximum recorded temperatures as well as daily temperature in January for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in January
Minimum:
69.0 °F
Average:
73.6 °F
Maximum:
78.9 °F
Sea water temperature in Key West in January
In the city of Key West, the month of January is a great time for swimming. The minimum recorded temperature during this month was 69.0°F on January 20, 2021, with an average temperature being 73.6°F and a maximum temperature reaching 78.9°F on January 3, 2016.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Jan 1 | 75.0°F | 69.2°F | 72.8°F |
| Jan 2 | 75.2°F | 70.1°F | 73.7°F |
| Jan 3 | 75.6°F | 71.9°F | 74.6°F |
| Jan 4 | 75.7°F | 72.1°F | 75.6°F |
| Jan 5 | 75.1°F | 69.6°F | 76.3°F |
| Jan 6 | 74.9°F | 70.8°F | 76.8°F |
| Jan 7 | 74.5°F | 72.1°F | 75.1°F |
| Jan 8 | 74.5°F | 73.0°F | 73.7°F |
| Jan 9 | 74.1°F | 72.4°F | 73.9°F |
| Jan 10 | 73.9°F | 71.6°F | 74.0°F |
| Jan 11 | 73.6°F | 71.9°F | 73.0°F |
| Jan 12 | 73.6°F | 72.1°F | 71.7°F |
| Jan 13 | 73.8°F | 74.2°F | 72.3°F |
| Jan 14 | 73.8°F | 74.0°F | 72.1°F |
| Jan 15 | 73.6°F | 74.2°F | 71.0°F |
| Jan 16 | 73.3°F | 74.4°F | 69.7°F |
| Jan 17 | 73.2°F | 75.0°F | 69.9°F |
| Jan 18 | 73.2°F | 74.9°F | 69.4°F |
| Jan 19 | 72.5°F | 73.0°F | 69.7°F |
| Jan 20 | 72.5°F | 72.7°F | 71.3°F |
| Jan 21 | 72.7°F | 72.8°F | 72.3°F |
| Jan 22 | 72.8°F | 72.2°F | 73.1°F |
| Jan 23 | 73.0°F | 72.4°F | 76.0°F |
| Jan 24 | 72.8°F | 72.3°F | 76.0°F |
| Jan 25 | 72.8°F | 73.4°F | 75.6°F |
| Jan 26 | 72.7°F | 73.1°F | 75.9°F |
| Jan 27 | 72.6°F | 73.8°F | 74.7°F |
| Jan 28 | 72.6°F | 74.0°F | 73.3°F |
| Jan 29 | 72.7°F | 74.4°F | 73.4°F |
| Jan 30 | 72.3°F | 73.5°F | 73.4°F |
| Jan 31 | 72.2°F | 72.5°F | 74.6°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.
January's temperature is a dip compared to warmer December at 75.9°F and February at 73.7°F.