Germany in September: Weather, Crowds & What to Expect
Climate Map for September
Average temperature across Germany in September.
City Weather in September
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| Berlin | 19° | 10° | 46 mm | moderate | Cool |
| Hamburg | 18° | 10° | 69 mm | moderate | Cool |
| München | 20° | 10° | 84 mm | moderate | Cool |
| Cologne | 19° | 11° | 68 mm | moderate | Cool |
| Frankfurt | 20° | 10° | 52 mm | moderate | Cool |
| Stuttgart | 20° | 10° | 55 mm | moderate | Cool |
| Düsseldorf | 19° | 11° | 66 mm | moderate | Cool |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
North Sea & Baltic Coast (Northern Lowlands)
Early autumn in September offers mild temperatures and fewer crowds; the Baltic’s waters are at their warmest, so islands like Rügen and Usedom still see swimmers and long bike rides. Migratory flocks begin to pass south along the coast and the first autumn storms can make for dramatic tides on the North Sea. Perfect for off-season breaks - bring layers for cool mornings and a mid-weight jacket for gusty evenings.
Northeast & Berlin-Brandenburg (Potsdam, Mecklenburg Lakes, Rügen)
September’s cooler mornings and clear afternoons are ideal for cycling the Brandenburg backroads or exploring Potsdam’s parks after the main crowds leave. Grape harvests begin further south, but the northeast enjoys calm, pleasant days and good visibility for photography on Rügen’s cliffs. Shoulder-season calm makes it an excellent month for quieter sightseeing and comfortable outdoor excursions.
Central Uplands & Harz/Thuringian Forest (Göttingen, Harz, Weimar)
October often produces the region’s best fall colour and cool, clear mornings are common, with the first light frosts possible at higher elevations. Tourist traffic drops, making it a fine time for cultural visits to Weimar and Quedlinburg while outdoor activities remain comfortable. Pack warm layers for evenings and expect damp leaf-covered tracks after rain.
Rhine Valley & Rhineland (Cologne, Düsseldorf, Mainz, Moselle)
October sees autumn colour on the slopes and pleasant, crisp days that highlight castle views; harvest festivals continue into early October in some years. Rain becomes more frequent as the Atlantic influence grows, and river fogs return in the mornings, enhancing the valley’s moody atmosphere. Bring layered clothing and a waterproof, and if you want quieter travel aim for midweek visits outside the Oktoberfest crowd in Munich.
Southwest: Black Forest & Upper Rhine Plain (Freiburg, Baden-Baden, Schwarzwald)
November can be damp and grey in the valleys with increasing chill, while the hills begin to show the first snows on exposed ridges. Spa and cultural visits are a pleasant option as outdoor attractions quieten; many walking routes remain usable but get muddy. Bring warm clothing and expect shorter opening hours at rural attractions.
Bavaria & the Alps (Munich, Garmisch-Partenkirchen, Berchtesgaden)
October brings early autumn colour to the pre-alpine forests, and many mountain lifts start seasonal maintenance, reducing access to some high routes. Lower-level walks remain pleasant and thermal spa visits are a good alternative as temperatures fall. Expect colder nights and possible early snow above 1,500-2,000 m; bring warm clothing and check lift schedules if you rely on them for alpine access.