April weather in Key West, FL
The average temperature in Key West in April is 76.8°F (70.9°F–82.7°F). Average precipitation: 2.17 inches.
April is a spring month in Key West, and is cooler than the annual average of 77.4°F. Daily temperatures swing about 11.8°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 35m. For travel, April is a comfortable month to visit.
Avg High
82.7°F
Avg Low
70.9°F
Precipitation
2.17 in
Daylight
12h 35m
April records in Key West
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 86.0°F (2016) | 63.0°F (2019) | 0.04 in (2020) |
| April 2 | 86.0°F (2016) | 64.9°F (2021) | 0.00 in (2012) |
| April 3 | 87.1°F (2017) | 66.9°F (2021) | 0.45 in (2022) |
| April 4 | 87.1°F (2023) | 66.9°F (2021) | 0.52 in (2024) |
| April 5 | 87.1°F (2022) | 64.9°F (2013) | 1.85 in (2013) |
| April 6 | 87.1°F (2023) | 64.0°F (2013) | 0.32 in (2012) |
| April 7 | 87.1°F (2023) | 64.0°F (2024) | 0.01 in (2015) |
| April 8 | 86.0°F (2014) | 64.0°F (2014) | 0.81 in (2014) |
| April 9 | 86.0°F (2015) | 61.0°F (2017) | 0.40 in (2019) |
| April 10 | 86.0°F (2015) | 63.0°F (2022) | 0.03 in (2023) |
| April 11 | 86.0°F (2015) | 64.9°F (2012) | 0.06 in (2021) |
| April 12 | 89.1°F (2020) | 69.1°F (2025) | 0.50 in (2023) |
| April 13 | 88.0°F (2020) | 66.0°F (2025) | 2.07 in (2017) |
| April 14 | 88.0°F (2020) | 66.0°F (2025) | 0.23 in (2019) |
| April 15 | 87.1°F (2015) | 68.0°F (2024) | 0.28 in (2018) |
| April 16 | 88.0°F (2020) | 66.9°F (2018) | 0.40 in (2014) |
| April 17 | 89.1°F (2020) | 66.9°F (2018) | 0.34 in (2017) |
| April 18 | 87.1°F (2020) | 64.0°F (2018) | 0.25 in (2017) |
| April 19 | 88.0°F (2020) | 69.1°F (2018) | 1.34 in (2019) |
| April 20 | 87.1°F (2013) | 68.0°F (2018) | 2.02 in (2021) |
| April 21 | 88.0°F (2020) | 66.0°F (2019) | 2.15 in (2012) |
| April 22 | 88.0°F (2020) | 64.0°F (2019) | 1.38 in (2017) |
| April 23 | 89.1°F (2020) | 66.9°F (2019) | 0.57 in (2015) |
| April 24 | 88.0°F (2020) | 66.0°F (2012) | 0.08 in (2017) |
| April 25 | 87.1°F (2020) | 66.9°F (2012) | 0.87 in (2023) |
| April 26 | 89.1°F (2015) | 68.0°F (2017) | 0.21 in (2025) |
| April 27 | 89.1°F (2015) | 69.1°F (2022) | 0.12 in (2024) |
| April 28 | 87.1°F (2014) | 70.0°F (2022) | 0.41 in (2015) |
| April 29 | 88.0°F (2020) | 70.0°F (2015) | 5.26 in (2015) |
| April 30 | 88.0°F (2014) | 69.1°F (2018) | 2.21 in (2012) |