Click on a day for an hourly weather forecast
The temperatures in Seymour in September are comfortable with low of 15°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Seymour during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Seymour in September 2025.
If you’re planning to visit Seymour in the near future, we highly recommend that you review the 14 day weather forecast for Seymour before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -4° | 8 | 21 | 3 | 89 mm | Awful | Seymour in January |
| February | 6° / -3° | 8 | 17 | 3 | 109 mm | Awful | Seymour in February |
| March | 12° / 2° | 8 | 22 | 1 | 132 mm | Bad | Seymour in March |
| April | 18° / 7° | 9 | 20 | 0 | 168 mm | Ok | Seymour in April |
| May | 23° / 13° | 10 | 21 | 0 | 142 mm | Good | Seymour in May |
| June | 28° / 17° | 10 | 20 | 0 | 133 mm | Good | Seymour in June |
| July | 29° / 19° | 10 | 21 | 0 | 117 mm | Ok | Seymour in July |
| August | 29° / 19° | 8 | 23 | 0 | 82 mm | Ok | Seymour in August |
| September | 26° / 15° | 7 | 23 | 0 | 85 mm | Good | Seymour in September |
| October | 19° / 9° | 7 | 24 | 0 | 98 mm | Ok | Seymour in October |
| November | 11° / 3° | 6 | 23 | 1 | 100 mm | Ok | Seymour in November |
| December | 6° / -1° | 8 | 21 | 2 | 107 mm | Awful | Seymour in December |