SeasonScore
Cologne, Germany
Photo: Ahgee · CC BY-SA 3.0

Germany

Cologne in September

🍂 Autumn

Pleasant and some showers.

Best months: Jul (9.3), Aug (9.3), Sep (9.3)

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Why September scores 9.3What goes into the score

How it works
🌡️ 20° / 10°C🌧️ 67 mm💧 dew pt 10°🍃 PM2.5 6
  • Weather comfort9.2
    • ✓Comfortable temperatures (20°C highs / 10°C lows)
    • ✓Comfortable humidity (dew point 10.3°C)
    • ✓Mostly dry (~67 mm rain)
  • Air quality9.9
    • ✓Good (within WHO guideline) (PM2.5 ~6 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline7.5
    • ·Increased caution
Compare monthsPut September side by side with another month
SepJul
Score9.3 Excellent9.3 Excellent
Season🍂 Autumn☀️ Summer
High / low20° / 10°25° / 13°
Rain67 mm87 mm
Humiditydew pt 10°dew pt 13°
PM2.56 µg/m³7 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Cologne weather-station normals. Rainfall: Cologne weather-station normals (national met service).

Holidays & crowdsSeptember 2027

No long holidays

No long public-holiday weekends this month. School holidays aren't counted, so check those if you want to avoid family crowds.

No national public holidays in Germany this month.

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Nature calendarBlossoms, leaves & seasons in Cologne

  • Snowy daysTypical dates
    Snow likely Dec–Feb (most in Jan: ~4 days)

    Average number of days with snowfall at Cologne.

    Source: Cologne weather-station normals (national weather service, via Wikipedia climate table)

Explore CologneEvents, sights, food & souvenirs

Check event dates locally

A city on the Rhine in western Germany known for its giant Gothic cathedral, Carnival, Kölsch beer and art museums.

Events in September

No major events on our calendar for September.

Coming up later

Start of Carnival seasonEvery year11 November every year, at 11:11

The official opening of the Carnival season with costumed crowds.

Why go: The Old Town is extremely crowded.

Where: Heumarkt and the Old Town

Christmas marketsDate variesUsually late November to 23 December

Several large markets with stalls, mulled wine and lights.

Why go: Weekends are very busy.

Where: Cathedral square, Old Town and other squares

CarnivalDate variesUsually February or early March, from Weiberfastnacht to Rosenmontag; date moves with Easter

Street parties, costumes and the big Rosenmontag parade.

Why go: Hotels book up early; expect closures on the main days.

Where: Citywide