Click on a day for an hourly weather forecast
The temperatures in Aachen in August are comfortable with low of 14°C and and high up to 23°C.
You can expect about 3 to 8 days of rain in Aachen during the month of August. 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 Aachen in August 2025.
If you’re planning to visit Aachen in the near future, we highly recommend that you review the 14 day weather forecast for Aachen before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 4° / 1° | 9 | 13 | 9 | 86 mm | Awful | Aachen in January |
| February | 6° / 1° | 8 | 13 | 7 | 74 mm | Awful | Aachen in February |
| March | 10° / 3° | 7 | 21 | 3 | 71 mm | Awful | Aachen in March |
| April | 14° / 6° | 5 | 24 | 1 | 51 mm | Good | Aachen in April |
| May | 17° / 9° | 7 | 24 | 0 | 96 mm | Ok | Aachen in May |
| June | 21° / 12° | 6 | 24 | 0 | 102 mm | Good | Aachen in June |
| July | 23° / 14° | 6 | 25 | 0 | 93 mm | Perfect | Aachen in July |
| August | 23° / 14° | 5 | 26 | 0 | 89 mm | Perfect | Aachen in August |
| September | 19° / 11° | 4 | 26 | 0 | 63 mm | Good | Aachen in September |
| October | 14° / 8° | 6 | 25 | 0 | 66 mm | Good | Aachen in October |
| November | 9° / 5° | 8 | 20 | 2 | 71 mm | Awful | Aachen in November |
| December | 6° / 2° | 10 | 15 | 6 | 100 mm | Awful | Aachen in December |