Click on a day for an hourly weather forecast
The temperatures in Thurso in September are usually low and can range between 10°C and 14°C.
You can expect rain for roughly half of the month of September in Thurso. 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 Thurso in September 2025.
If you’re planning to visit Thurso in the near future, we highly recommend that you review the 14 day weather forecast for Thurso before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 3° | 12 | 11 | 8 | 119 mm | Awful | Thurso in January |
| February | 6° / 3° | 10 | 11 | 7 | 109 mm | Awful | Thurso in February |
| March | 8° / 4° | 10 | 17 | 4 | 94 mm | Awful | Thurso in March |
| April | 9° / 5° | 9 | 19 | 3 | 81 mm | Awful | Thurso in April |
| May | 11° / 7° | 9 | 22 | 0 | 102 mm | Bad | Thurso in May |
| June | 14° / 9° | 7 | 23 | 0 | 87 mm | Ok | Thurso in June |
| July | 15° / 11° | 9 | 22 | 0 | 116 mm | Ok | Thurso in July |
| August | 15° / 11° | 8 | 23 | 0 | 127 mm | Ok | Thurso in August |
| September | 14° / 10° | 9 | 21 | 0 | 116 mm | Ok | Thurso in September |
| October | 11° / 8° | 10 | 21 | 0 | 148 mm | Bad | Thurso in October |
| November | 9° / 6° | 10 | 19 | 2 | 130 mm | Awful | Thurso in November |
| December | 7° / 4° | 11 | 15 | 5 | 116 mm | Awful | Thurso in December |