Key Biscayne — Water Temperature in February
Water Temperature Range
20°C
minimum
23°C
average
27°C
maximum
Water Temperature Chart for Month
The chart shows the average daily water temperature for each day of the month based on historical data.
Table of Water Temperatures by Day of the Month for Previous Years
| Day | 2026 | 2025 | 2024 | 2023 |
|---|---|---|---|---|
| FEB 1 | -10°C | 21°C | 21°C | 23°C |
| FEB 2 | 23°C | 21°C | 22°C | 22°C |
| FEB 3 | 22°C | 22°C | 23°C | 21°C |
| FEB 4 | 22°C | 22°C | 23°C | 21°C |
| FEB 5 | 21°C | 21°C | 23°C | 21°C |
| FEB 6 | 20°C | 23°C | 23°C | 23°C |
| FEB 7 | 20°C | 22°C | 23°C | 22°C |
| FEB 8 | 20°C | 23°C | 23°C | 23°C |
| FEB 9 | 20°C | 23°C | 23°C | 24°C |
| FEB 10 | 20°C | 24°C | 23°C | 24°C |
| FEB 11 | 20°C | 22°C | 23°C | 25°C |
| FEB 12 | 21°C | 23°C | 24°C | 24°C |
| FEB 13 | 21°C | 23°C | 24°C | 24°C |
| FEB 14 | 21°C | 23°C | 24°C | 25°C |
| FEB 15 | 21°C | 24°C | 25°C | 24°C |
| FEB 16 | 22°C | 24°C | 24°C | 26°C |
| FEB 17 | 21°C | 23°C | 24°C | 26°C |
| FEB 18 | 22°C | 24°C | 24°C | 25°C |
| FEB 19 | 22°C | 23°C | 25°C | 25°C |
| FEB 20 | 22°C | 24°C | 25°C | 26°C |
| FEB 21 | 23°C | 23°C | 25°C | 24°C |
| FEB 22 | 23°C | 23°C | 25°C | 23°C |
| FEB 23 | 23°C | 24°C | 24°C | 24°C |
| FEB 24 | 23°C | 23°C | 24°C | 24°C |
| FEB 25 | 24°C | 23°C | 24°C | 26°C |
| FEB 26 | 23°C | 23°C | 23°C | 25°C |
| FEB 27 | 23°C | 23°C | 23°C | 26°C |
| FEB 28 | 22°C | 23°C | 23°C | 26°C |
| FEB 29 | -10°C | 21°C | 23°C | 20°C |
February: Climate and Swimming Opportunities
Average Night Air Temperature
17°C
Average Day Air Temperature
24°C
Precipitation Amount per Month
61 mm
Number of Rainy Days
8
Daylight per Day
11 hrs
Sunshine per Day
8 hrs
Average Wind Speed
17 km/h
Average Humidity
72%
With such a ratio between the average monthly temperatures of water and air, swimming feels warm and comfortable even if the day isn’t hot. The water can feel warmer than the air, so getting out may feel a bit cool.