Click on a day for an hourly weather forecast
The temperatures in Saint James 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 Saint James. 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 Saint James in September 2025.
If you’re planning to visit Saint James in the near future, we highly recommend that you review the 14 day weather forecast for Saint James before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 27° / 24° | 4 | 27 | 0 | 64 mm | Perfect | Saint James in January |
| February | 27° / 24° | 3 | 26 | 0 | 43 mm | Perfect | Saint James in February |
| March | 27° / 24° | 3 | 28 | 0 | 47 mm | Perfect | Saint James in March |
| April | 28° / 25° | 7 | 23 | 0 | 104 mm | Good | Saint James in April |
| May | 29° / 25° | 13 | 18 | 0 | 215 mm | Ok | Saint James in May |
| June | 29° / 26° | 12 | 18 | 0 | 171 mm | Ok | Saint James in June |
| July | 30° / 27° | 12 | 19 | 0 | 135 mm | Ok | Saint James in July |
| August | 30° / 27° | 15 | 16 | 0 | 196 mm | Ok | Saint James in August |
| September | 30° / 27° | 13 | 17 | 0 | 199 mm | Ok | Saint James in September |
| October | 29° / 26° | 13 | 18 | 0 | 214 mm | Ok | Saint James in October |
| November | 28° / 25° | 6 | 24 | 0 | 118 mm | Perfect | Saint James in November |
| December | 28° / 25° | 4 | 27 | 0 | 57 mm | Perfect | Saint James in December |