Click on a day for an hourly weather forecast
The weather in Cayo Santa Maria in September is very hot. The average temperatures are between 25°C and 32°C, drinking water regularly is advisable.
There’s going to be many days of rain during the month of September in Cayo Santa Maria.
Cayo Santa Maria 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 Cayo Santa Maria in September 2025.
If you’re planning to visit Cayo Santa Maria in the near future, we highly recommend that you review the 14 day weather forecast for Cayo Santa Maria before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 27° / 19° | 2 | 29 | 0 | 34 mm | Perfect | Cayo Santa Maria in January |
| February | 28° / 20° | 2 | 27 | 0 | 48 mm | Perfect | Cayo Santa Maria in February |
| March | 29° / 20° | 2 | 29 | 0 | 35 mm | Good | Cayo Santa Maria in March |
| April | 31° / 22° | 5 | 25 | 0 | 85 mm | Good | Cayo Santa Maria in April |
| May | 31° / 23° | 13 | 18 | 0 | 226 mm | Ok | Cayo Santa Maria in May |
| June | 31° / 25° | 15 | 15 | 0 | 197 mm | Ok | Cayo Santa Maria in June |
| July | 32° / 25° | 19 | 12 | 0 | 242 mm | Ok | Cayo Santa Maria in July |
| August | 32° / 25° | 18 | 13 | 0 | 255 mm | Ok | Cayo Santa Maria in August |
| September | 32° / 25° | 19 | 11 | 0 | 300 mm | Ok | Cayo Santa Maria in September |
| October | 30° / 24° | 13 | 18 | 0 | 226 mm | Ok | Cayo Santa Maria in October |
| November | 28° / 21° | 4 | 26 | 0 | 61 mm | Perfect | Cayo Santa Maria in November |
| December | 28° / 20° | 2 | 29 | 0 | 35 mm | Perfect | Cayo Santa Maria in December |