Germany
Germany in September
Where it is warm, dry and good for swimming in Germany in September — compared across the country’s main destinations.
Quick answers
- Where is it warmest in Germany in September?
- Karlsruhe is the warmest of the 16 destinations compared, with highs of 21°C (70°F) in September; Bremen is the coolest at 18°C (65°F).
Warmest
21°
Karlsruhe
Coolest
18°
Bremen
Driest
43 mm
Potsdam
September in Germany ranges from 18°C (65°F) in Bremen to 21°C (70°F) in Karlsruhe — a spread of 3 degrees across the country. On average it is 4.5 °C (8 °F) cooler than August. Most destinations stay largely dry. Best bets this month: Karlsruhe, Heidelberg, and Mannheim.
Best places in Germany in September
72 
Karlsruhe
Baden-Wurttemberg · Germany
21° / 10° 61 mm Sep
69
Heidelberg
Baden-Wurttemberg · Germany
20° / 11° 66 mm Sep
71
Mannheim
Baden-Wurttemberg · Germany
21° / 11° 56 mm Sep
65
Dresden
Saxony · Germany
20° / 11° 49 mm Sep
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67
Frankfurt am Main
Hesse · Germany
20° / 10° 52 mm Sep
68
Mainz
Rhineland-Palatinate · Germany
20° / 10° 47 mm Sep
60
Berlin
State of Berlin · Germany
19° / 11° 46 mm Sep
64
Ulm
Baden-Wurttemberg · Germany
19° / 9° 63 mm Sep
Weather in September by city
| Place | Day | Night | Rain | Sea | Score |
|---|---|---|---|---|---|
| Karlsruhe | 21° | 10° | 61 mm | — | 72 |
| Mannheim | 21° | 11° | 56 mm | — | 71 |
| Heidelberg | 20° | 11° | 66 mm | — | 69 |
| Mainz | 20° | 10° | 47 mm | — | 68 |
| Frankfurt am Main | 20° | 10° | 52 mm | — | 67 |
| Freiburg im Breisgau | 20° | 11° | 67 mm | — | 66 |
| Dresden | 20° | 11° | 49 mm | — | 65 |
| Ulm | 19° | 9° | 63 mm | — | 64 |
| Leipzig | 19° | 10° | 47 mm | — | 62 |
| Mitte | 19° | 11° | 46 mm | — | 61 |
| Potsdam | 19° | 10° | 43 mm | — | 61 |
| Chemnitz | 19° | 9° | 60 mm | — | 61 |
| Berlin | 19° | 11° | 46 mm | — | 60 |
| Düsseldorf | 19° | 11° | 66 mm | — | 58 |
| Hamburg | 18° | 10° | 69 mm | — | 54 |
| Bremen | 18° | 9° | 62 mm | — | 53 |
Festivals in Germany in September
- Oktoberfest World's largest beer festival in Munich, Bavaria, Germany
- Folsom Europe Berlin-based queer festival
- Wurstmarkt Dürkheim Biggest wine festival in the world
- Eurobike Eurobike annual trade fair
- Berlin International Literature Festival Annual literary event in Berlin, Germany
- Oldenburg International Film Festival Annual film festival held in Oldenburg, Germany
- Superbloom Festival Music festival in Munich, Germany
- Nocturnal Culture Night
- Preetzer Papiertheatertreffen German festival of paper theater performers
School holidays in September
When schools are off, family travel peaks and prices rise.
- Jul 29, 2027 – Sep 11, 2027 Summer HolidaysBaden-Württemberg
- Aug 2, 2027 – Sep 13, 2027 Summer HolidaysBavaria
Frequently asked questions
What is the weather like in Germany in September?
Average daytime highs range from 18° in Bremen to 21° in Karlsruhe.