Click on a day for an hourly weather forecast
The weather in Marco Island in September is very hot. The average temperatures are between 26°C and 31°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in Marco Island.
Marco Island should expect an average of 15 to 22 days of rain, so be sure to bring along a waterproof jacket to stay dry this month!
Our weather forecast can give you a great sense of what weather to expect in Marco Island in September 2025.
If you’re planning to visit Marco Island in the near future, we highly recommend that you review the 14 day weather forecast for Marco Island before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 22° / 16° | 2 | 29 | 0 | 44 mm | Good | Marco Island in January |
| February | 23° / 17° | 2 | 26 | 0 | 33 mm | Perfect | Marco Island in February |
| March | 25° / 18° | 2 | 29 | 0 | 38 mm | Perfect | Marco Island in March |
| April | 27° / 21° | 3 | 27 | 0 | 46 mm | Perfect | Marco Island in April |
| May | 29° / 23° | 7 | 24 | 0 | 117 mm | Ok | Marco Island in May |
| June | 31° / 26° | 13 | 17 | 0 | 211 mm | Ok | Marco Island in June |
| July | 31° / 27° | 16 | 15 | 0 | 248 mm | Ok | Marco Island in July |
| August | 32° / 27° | 18 | 13 | 0 | 272 mm | Ok | Marco Island in August |
| September | 31° / 26° | 15 | 15 | 0 | 228 mm | Ok | Marco Island in September |
| October | 29° / 24° | 6 | 25 | 0 | 103 mm | Good | Marco Island in October |
| November | 26° / 20° | 2 | 28 | 0 | 49 mm | Perfect | Marco Island in November |
| December | 24° / 18° | 2 | 29 | 0 | 45 mm | Perfect | Marco Island in December |