Click on a day for an hourly weather forecast
The temperatures in Sylt in September are usually low and can range between 14°C and 16°C.
You can expect rain for roughly half of the month of September in Sylt. 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 Sylt in September 2025.
If you’re planning to visit Sylt in the near future, we highly recommend that you review the 14 day weather forecast for Sylt before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / 2° | 11 | 14 | 6 | 100 mm | Awful | Sylt in January |
| February | 4° / 2° | 8 | 13 | 7 | 74 mm | Awful | Sylt in February |
| March | 5° / 3° | 6 | 23 | 2 | 61 mm | Awful | Sylt in March |
| April | 8° / 6° | 5 | 24 | 1 | 47 mm | Ok | Sylt in April |
| May | 12° / 9° | 6 | 25 | 0 | 73 mm | Ok | Sylt in May |
| June | 15° / 13° | 5 | 25 | 0 | 88 mm | Good | Sylt in June |
| July | 18° / 15° | 8 | 23 | 0 | 121 mm | Ok | Sylt in July |
| August | 18° / 16° | 9 | 22 | 0 | 181 mm | Ok | Sylt in August |
| September | 16° / 14° | 9 | 21 | 0 | 154 mm | Ok | Sylt in September |
| October | 13° / 11° | 9 | 22 | 0 | 155 mm | Bad | Sylt in October |
| November | 9° / 8° | 9 | 20 | 1 | 129 mm | Bad | Sylt in November |
| December | 6° / 5° | 10 | 18 | 3 | 121 mm | Awful | Sylt in December |