Weather in Aachen in September
In an average September, Aachen sees a daily high around 18°C and a low around 11°C, based on 1980–2026 of local climate records.
| Average high | 18°C |
|---|---|
| Typical high range | 14°C to 24°C |
| Average low | 11°C |
| Typical low range | 7°C to 15°C |
| Average daily precipitation | 3 mm |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
32°C
2020-09-15
Lowest
9°C
1986-09-17
Low
Highest
19°C
2016-09-14
Lowest
2°C
2018-09-29
Feels-like
Highest
37°C
2024-09-01
Lowest
-1°C
2018-09-29
Humidity
Highest
16.0 g/m³
2024-09-05
Lowest
6.0 g/m³
2019-09-20
Wind
Highest
42 km/h
1988-09-24
Lowest
6 km/h
2016-09-20
Gust
Highest
89 km/h
2017-09-13
Lowest
12 km/h
1994-09-30
Precip
Wettest
169 mm
1984
Driest
27 mm
1997
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