Click on a day for an hourly weather forecast
The temperatures in Wismar in September are usually low and can range between 11°C and 19°C.
You can expect about 3 to 8 days of rain in Wismar 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 Wismar in September 2026.
If you’re planning to visit Wismar in the near future, we highly recommend that you review the 14 day weather forecast for Wismar before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -1° | 7 | 14 | 11 | 63 mm | Awful | Wismar in January |
| February | 4° / -1° | 7 | 11 | 10 | 55 mm | Awful | Wismar in February |
| March | 8° / 1° | 5 | 22 | 4 | 44 mm | Bad | Wismar in March |
| April | 13° / 4° | 5 | 24 | 2 | 44 mm | Bad | Wismar in April |
| May | 16° / 7° | 5 | 26 | 0 | 72 mm | Good | Wismar in May |
| June | 20° / 11° | 5 | 25 | 0 | 83 mm | Good | Wismar in June |
| July | 23° / 14° | 6 | 25 | 0 | 100 mm | Perfect | Wismar in July |
| August | 23° / 14° | 4 | 27 | 0 | 76 mm | Perfect | Wismar in August |
| September | 19° / 11° | 4 | 26 | 0 | 61 mm | Good | Wismar in September |
| October | 13° / 7° | 6 | 25 | 0 | 62 mm | Ok | Wismar in October |
| November | 8° / 4° | 7 | 22 | 1 | 58 mm | Bad | Wismar in November |
| December | 4° / 1° | 8 | 16 | 7 | 64 mm | Awful | Wismar in December |