Click on a day for an hourly weather forecast
The temperatures in Glasgow in September are quite cold with temperatures between 9°C and 14°C, warm clothes are a must.
You can expect rain for roughly half of the month of September in Glasgow. 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 Glasgow in September 2025.
If you’re planning to visit Glasgow in the near future, we highly recommend that you review the 14 day weather forecast for Glasgow before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / 1° | 13 | 9 | 9 | 147 mm | Awful | Glasgow in January |
| February | 5° / 1° | 12 | 8 | 9 | 148 mm | Awful | Glasgow in February |
| March | 8° / 2° | 10 | 15 | 6 | 121 mm | Awful | Glasgow in March |
| April | 10° / 3° | 8 | 20 | 2 | 87 mm | Awful | Glasgow in April |
| May | 13° / 6° | 10 | 21 | 0 | 118 mm | Bad | Glasgow in May |
| June | 16° / 8° | 9 | 21 | 0 | 131 mm | Ok | Glasgow in June |
| July | 17° / 10° | 11 | 20 | 0 | 159 mm | Ok | Glasgow in July |
| August | 16° / 10° | 11 | 20 | 0 | 176 mm | Ok | Glasgow in August |
| September | 14° / 9° | 9 | 21 | 0 | 122 mm | Ok | Glasgow in September |
| October | 11° / 6° | 12 | 19 | 0 | 173 mm | Bad | Glasgow in October |
| November | 7° / 3° | 12 | 17 | 2 | 158 mm | Awful | Glasgow in November |
| December | 5° / 2° | 14 | 11 | 6 | 166 mm | Awful | Glasgow in December |