Click on a day for an hourly weather forecast
The temperatures in Starnberg in September are quite cold with temperatures between 9°C and 19°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Starnberg 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 Starnberg in September 2026.
If you’re planning to visit Starnberg in the near future, we highly recommend that you review the 14 day weather forecast for Starnberg before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -3° | 6 | 9 | 15 | 110 mm | Awful | Starnberg in January |
| February | 4° / -3° | 5 | 9 | 14 | 80 mm | Awful | Starnberg in February |
| March | 9° / 1° | 7 | 16 | 9 | 84 mm | Awful | Starnberg in March |
| April | 14° / 4° | 7 | 20 | 4 | 86 mm | Bad | Starnberg in April |
| May | 17° / 7° | 13 | 17 | 1 | 228 mm | Ok | Starnberg in May |
| June | 22° / 11° | 12 | 18 | 0 | 250 mm | Ok | Starnberg in June |
| July | 24° / 13° | 11 | 20 | 0 | 232 mm | Good | Starnberg in July |
| August | 24° / 13° | 10 | 21 | 0 | 211 mm | Good | Starnberg in August |
| September | 19° / 9° | 7 | 23 | 0 | 133 mm | Ok | Starnberg in September |
| October | 14° / 5° | 7 | 23 | 1 | 117 mm | Ok | Starnberg in October |
| November | 9° / 2° | 4 | 20 | 6 | 61 mm | Bad | Starnberg in November |
| December | 4° / -1° | 7 | 11 | 13 | 86 mm | Awful | Starnberg in December |