Click on a day for an hourly weather forecast
The temperatures in Mayen in September are usually low and can range between 10°C and 18°C.
You can expect about 3 to 8 days of rain in Mayen 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 Mayen in September 2026.
If you’re planning to visit Mayen in the near future, we highly recommend that you review the 14 day weather forecast for Mayen before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -2° | 8 | 7 | 17 | 73 mm | Awful | Mayen in January |
| February | 4° / -1° | 6 | 8 | 15 | 63 mm | Awful | Mayen in February |
| March | 8° / 1° | 7 | 15 | 9 | 60 mm | Awful | Mayen in March |
| April | 13° / 4° | 6 | 20 | 4 | 60 mm | Bad | Mayen in April |
| May | 16° / 7° | 8 | 22 | 1 | 111 mm | Ok | Mayen in May |
| June | 20° / 11° | 7 | 23 | 0 | 102 mm | Ok | Mayen in June |
| July | 22° / 12° | 6 | 25 | 0 | 110 mm | Good | Mayen in July |
| August | 21° / 13° | 5 | 26 | 0 | 91 mm | Good | Mayen in August |
| September | 18° / 10° | 4 | 26 | 0 | 61 mm | Good | Mayen in September |
| October | 12° / 6° | 6 | 24 | 1 | 63 mm | Ok | Mayen in October |
| November | 7° / 3° | 6 | 18 | 6 | 59 mm | Bad | Mayen in November |
| December | 4° / 0° | 8 | 10 | 13 | 80 mm | Awful | Mayen in December |