Click on a day for an hourly weather forecast
The weather in Key Largo in May is very hot. The average temperatures are between 25°C and 27°C, drinking water regularly is advisable.
You can expect about 3 to 8 days of rain in Key Largo during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Key Largo in May 2025.
If you’re planning to visit Key Largo in the near future, we highly recommend that you review the 14 day weather forecast for Key Largo before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 22° / 20° | 2 | 29 | 0 | 51 mm | Good | Key Largo in January |
| February | 23° / 21° | 3 | 26 | 0 | 51 mm | Perfect | Key Largo in February |
| March | 24° / 22° | 2 | 29 | 0 | 38 mm | Perfect | Key Largo in March |
| April | 25° / 24° | 3 | 27 | 0 | 82 mm | Perfect | Key Largo in April |
| May | 27° / 25° | 7 | 24 | 0 | 139 mm | Good | Key Largo in May |
| June | 29° / 27° | 11 | 19 | 0 | 219 mm | Ok | Key Largo in June |
| July | 29° / 28° | 12 | 19 | 0 | 227 mm | Ok | Key Largo in July |
| August | 30° / 28° | 14 | 17 | 0 | 287 mm | Ok | Key Largo in August |
| September | 29° / 28° | 13 | 17 | 0 | 283 mm | Ok | Key Largo in September |
| October | 28° / 26° | 7 | 24 | 0 | 198 mm | Good | Key Largo in October |
| November | 25° / 24° | 3 | 27 | 0 | 82 mm | Perfect | Key Largo in November |
| December | 24° / 22° | 2 | 29 | 0 | 60 mm | Perfect | Key Largo in December |