When to go · Cologne
Cologne in September
Great month. Inside Cologne's best window: Apr–Oct; also Dec for Christmas markets.
Key facts
- Verdict
- Great
- Temperature
- 20°C (68°F)68°F (20°C) / 10°C (50°F)50°F (10°C)
- average high / low
- Rain days
- 11
- Crowds
- Medium
- Germany overall
- Prices
- High
- Germany overall
Verdict
Inside Cologne's best window: Apr–Oct; also Dec for Christmas markets.
Is another month better than September?
No other month rates higher than September for Cologne in this guide.
Weather in September
- CologneHighs around 20 °C (68 °F), lows around 10 °C (50 °F), rain on about 11 daysHighs around 68 °F (20 °C), lows around 50 °F (10 °C), rain on about 11 days
- Rhine and the west, Germany · Cologne, Frankfurt, Rhine and Moselle valleys, Heidelbergbest weather
Mildest winters; wine harvest and river trips at their best in September–October.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Oktoberfest (Munich) big impact
Mid Sep – early Oct (19 Sep – 4 Oct 2026) · Germany
Munich hotels triple in price; trains from Munich crowded in the evenings.
Crowds and prices
- Crowds · Germany overall
- Medium
- Prices · Germany overall
- High
Germany overall: Best all-round month; Oktoberfest starts in the second half and Munich prices triple.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Cologne, side by side.
Verdict
Sep: Great
Apr: Great
Daytime high
Sep: 20 °C (68 °F)68 °F (20 °C)
Apr: 16 °C (61 °F)61 °F (16 °C)
Night low
Sep: 10 °C (50 °F)50 °F (10 °C)
Apr: 5 °C (41 °F)41 °F (5 °C)
Rain days
Sep: 11
Apr: 10 (better)
Crowds
Sep: Medium
Apr: Medium
Prices
Sep: High
Apr: Medium
Festivals listed
Sep: 1
Apr: 0
September: Inside Cologne's best window: Apr–Oct; also Dec for Christmas markets.
April: Inside Cologne's best window: Apr–Oct; also Dec for Christmas markets.
Cologne: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings
- A rain jacket or umbrella and shoes that dry fast