Cologne Weather in September
Thinking of visiting Cologne in September? Expect pleasant temperatures reaching 21°C (70°F) during the day, dropping to 11°C (52°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Cologne in September
Historically, the month has about 15 days of rain, averaging 75 mm (3 in) in total. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Cologne in September
Weather in Cologne is at its perfect in September. Highs reach 21°C (70°F), while nights settle around 11°C (52°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Cologne in September
The month brings about 151 hours of sunlight, offering a comfortable mix of sun and overcast.If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August and September typically offer the best circumstances for Cologne.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Germany, check out our Cologne's climate page.
Cologne Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
21°C (70°F)
Chance of Rain
50%
Precipitation
75 mm (3 in)
Rainy days
15 days
Sunshine
151 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cologne typically drop from around 21°C (70°F) at the start of September to approximately 18°C (64°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 12°C (54°F).
Average temperatures in September
Historical weather for Cologne in September
Browse day-by-day weather records for Cologne spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cologne historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Cologne.
- The hottest September day on record in Cologne reached 34°C (93°F) (September 15, 2020).
- Cologne experienced its chilliest September day on September 30, 1995, reaching only 10°C (50°F).
- The coldest night in September in Cologne was on September 19, 1986, with a minimum of 1°C (34°F).
Best Places in Germany in September
Find out more about the weather in Germany and which places have the best travel conditions in this month. See all of Germany in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Cologne in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Cologne in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Germany, check out our Cologne's climate page.
See the full Cologne climate overview or explore weather in Germany.
