Click on a day for an hourly weather forecast
The temperatures in Lerwick in September are usually low and can range between 11°C and 13°C.
You can expect rain for roughly half of the month of September in Lerwick. 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 Lerwick in September 2025.
If you’re planning to visit Lerwick in the near future, we highly recommend that you review the 14 day weather forecast for Lerwick before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / 5° | 13 | 18 | 0 | 122 mm | Bad | Lerwick in January |
| February | 7° / 5° | 11 | 17 | 0 | 91 mm | Bad | Lerwick in February |
| March | 7° / 5° | 9 | 21 | 1 | 84 mm | Bad | Lerwick in March |
| April | 8° / 6° | 6 | 24 | 0 | 51 mm | Ok | Lerwick in April |
| May | 9° / 8° | 6 | 25 | 0 | 56 mm | Ok | Lerwick in May |
| June | 12° / 10° | 6 | 25 | 0 | 47 mm | Ok | Lerwick in June |
| July | 13° / 12° | 6 | 25 | 0 | 69 mm | Ok | Lerwick in July |
| August | 14° / 12° | 8 | 23 | 0 | 94 mm | Ok | Lerwick in August |
| September | 13° / 11° | 9 | 21 | 0 | 99 mm | Bad | Lerwick in September |
| October | 11° / 9° | 12 | 19 | 0 | 128 mm | Bad | Lerwick in October |
| November | 10° / 7° | 12 | 18 | 0 | 133 mm | Bad | Lerwick in November |
| December | 8° / 6° | 13 | 18 | 0 | 132 mm | Bad | Lerwick in December |