Click on a day for an hourly weather forecast
The temperatures in Trelawny during September are extremely high, between 27°C and hot as 30°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Trelawny. 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 Trelawny in September 2025.
If you’re planning to visit Trelawny in the near future, we highly recommend that you review the 14 day weather forecast for Trelawny before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 27° / 23° | 2 | 29 | 0 | 63 mm | Perfect | Trelawny in January |
| February | 27° / 23° | 2 | 26 | 0 | 55 mm | Perfect | Trelawny in February |
| March | 27° / 23° | 3 | 28 | 0 | 58 mm | Perfect | Trelawny in March |
| April | 28° / 24° | 4 | 26 | 0 | 78 mm | Perfect | Trelawny in April |
| May | 28° / 25° | 8 | 23 | 0 | 145 mm | Good | Trelawny in May |
| June | 29° / 26° | 5 | 25 | 0 | 116 mm | Good | Trelawny in June |
| July | 29° / 26° | 7 | 24 | 0 | 104 mm | Ok | Trelawny in July |
| August | 30° / 26° | 8 | 23 | 0 | 108 mm | Ok | Trelawny in August |
| September | 30° / 27° | 10 | 20 | 0 | 158 mm | Ok | Trelawny in September |
| October | 29° / 26° | 10 | 21 | 0 | 195 mm | Ok | Trelawny in October |
| November | 28° / 25° | 5 | 25 | 0 | 121 mm | Perfect | Trelawny in November |
| December | 27° / 24° | 3 | 28 | 0 | 90 mm | Perfect | Trelawny in December |