Click on a day for an hourly weather forecast
The temperatures in Lysekil in September are usually low and can range between 13°C and 16°C.
You can expect about 3 to 8 days of rain in Lysekil 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 Lysekil in September 2026.
If you’re planning to visit Lysekil in the near future, we highly recommend that you review the 14 day weather forecast for Lysekil before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / 0° | 8 | 14 | 9 | 81 mm | Awful | Lysekil in January |
| February | 2° / 0° | 8 | 10 | 11 | 73 mm | Awful | Lysekil in February |
| March | 4° / 2° | 6 | 21 | 5 | 61 mm | Awful | Lysekil in March |
| April | 8° / 5° | 5 | 24 | 2 | 50 mm | Bad | Lysekil in April |
| May | 12° / 9° | 6 | 25 | 0 | 80 mm | Ok | Lysekil in May |
| June | 16° / 13° | 6 | 24 | 0 | 92 mm | Good | Lysekil in June |
| July | 18° / 15° | 7 | 24 | 0 | 122 mm | Ok | Lysekil in July |
| August | 18° / 15° | 10 | 21 | 0 | 168 mm | Ok | Lysekil in August |
| September | 16° / 13° | 7 | 23 | 0 | 120 mm | Ok | Lysekil in September |
| October | 11° / 9° | 9 | 22 | 0 | 135 mm | Bad | Lysekil in October |
| November | 8° / 6° | 8 | 20 | 2 | 109 mm | Awful | Lysekil in November |
| December | 4° / 2° | 9 | 15 | 6 | 96 mm | Awful | Lysekil in December |