Click on a day for an hourly weather forecast
The temperatures in Dumfries in September are quite cold with temperatures between 9°C and 15°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Dumfries. 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 Dumfries in September 2025.
If you’re planning to visit Dumfries in the near future, we highly recommend that you review the 14 day weather forecast for Dumfries before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 2° | 12 | 15 | 5 | 134 mm | Awful | Dumfries in January |
| February | 6° / 2° | 11 | 12 | 5 | 146 mm | Awful | Dumfries in February |
| March | 8° / 2° | 9 | 19 | 3 | 118 mm | Awful | Dumfries in March |
| April | 11° / 4° | 8 | 22 | 1 | 75 mm | Bad | Dumfries in April |
| May | 13° / 6° | 9 | 22 | 0 | 124 mm | Bad | Dumfries in May |
| June | 16° / 9° | 9 | 21 | 0 | 131 mm | Ok | Dumfries in June |
| July | 17° / 11° | 10 | 21 | 0 | 154 mm | Ok | Dumfries in July |
| August | 17° / 11° | 11 | 20 | 0 | 176 mm | Ok | Dumfries in August |
| September | 15° / 9° | 9 | 21 | 0 | 126 mm | Ok | Dumfries in September |
| October | 12° / 7° | 11 | 20 | 0 | 171 mm | Bad | Dumfries in October |
| November | 9° / 5° | 11 | 19 | 0 | 149 mm | Bad | Dumfries in November |
| December | 6° / 3° | 13 | 16 | 2 | 164 mm | Awful | Dumfries in December |