Click on a day for an hourly weather forecast
The weather in Key West in March is hot. The average temperatures are between 22°C and 23°C.
You can expect a few rainy days in Key West during March, but usually the weather is comfortable in March.
Our weather forecast can give you a great sense of what weather to expect in Key West in March 2025.
If you’re planning to visit Key West in the near future, we highly recommend that you review the 14 day weather forecast for Key West before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 22° / 20° | 3 | 28 | 0 | 67 mm | Good | Key West in January |
| February | 23° / 21° | 2 | 26 | 0 | 60 mm | Perfect | Key West in February |
| March | 23° / 22° | 1 | 30 | 0 | 36 mm | Perfect | Key West in March |
| April | 25° / 24° | 3 | 27 | 0 | 81 mm | Perfect | Key West in April |
| May | 27° / 26° | 6 | 25 | 0 | 150 mm | Perfect | Key West in May |
| June | 28° / 27° | 9 | 21 | 0 | 198 mm | Good | Key West in June |
| July | 29° / 28° | 10 | 21 | 0 | 221 mm | Ok | Key West in July |
| August | 30° / 28° | 11 | 20 | 0 | 260 mm | Ok | Key West in August |
| September | 29° / 28° | 12 | 18 | 0 | 286 mm | Ok | Key West in September |
| October | 28° / 27° | 8 | 23 | 0 | 251 mm | Good | Key West in October |
| November | 25° / 24° | 3 | 27 | 0 | 93 mm | Perfect | Key West in November |
| December | 24° / 22° | 2 | 29 | 0 | 70 mm | Perfect | Key West in December |