Click on a day for an hourly weather forecast
The temperatures in Cancun during September are extremely high, between 27°C and hot as 31°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Cancun. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Cancun in September 2025.
If you’re planning to visit Cancun in the near future, we highly recommend that you review the 14 day weather forecast for Cancun before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 26° / 22° | 5 | 26 | 0 | 125 mm | Perfect | Cancun in January |
| February | 27° / 23° | 3 | 25 | 0 | 73 mm | Perfect | Cancun in February |
| March | 27° / 23° | 3 | 28 | 0 | 52 mm | Perfect | Cancun in March |
| April | 29° / 25° | 4 | 26 | 0 | 79 mm | Good | Cancun in April |
| May | 30° / 26° | 7 | 24 | 0 | 161 mm | Ok | Cancun in May |
| June | 30° / 26° | 10 | 20 | 0 | 246 mm | Ok | Cancun in June |
| July | 31° / 27° | 8 | 23 | 0 | 131 mm | Ok | Cancun in July |
| August | 31° / 27° | 10 | 21 | 0 | 184 mm | Ok | Cancun in August |
| September | 31° / 27° | 13 | 17 | 0 | 214 mm | Ok | Cancun in September |
| October | 29° / 26° | 11 | 20 | 0 | 283 mm | Ok | Cancun in October |
| November | 28° / 24° | 7 | 23 | 0 | 164 mm | Good | Cancun in November |
| December | 27° / 23° | 4 | 27 | 0 | 120 mm | Perfect | Cancun in December |