Cologne · AutumnMonth summary
Cologne weather in September
✅ Good
🌡️ Temperature min / max
13°C – 20°C
🌧 Rainy days
34% of days
☀️ Sunshine
10.5h per day on average
🌊 🌊 Season
Autumn
⭐ ⭐ Weather score
7.3/10
📅 📅 Best month
July (7.8/10)
Quick decision
Should you visit Cologne in September?
✅ Good
✅ Yes if: you want to explore the city on foot without suffering from heat.
❌ No if: you're looking for a beach destination — water and air are still cool.
Our take: Favourable conditions in September (7.3/10). July scores higher but the gap is small.
By trip type
Cologne in September by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ⚠️ Possible
- 🏖️ Beach / swimming : — No sea access
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in September
Autumn in Cologne is often underrated: 20°C, golden light and declining crowds. An interesting window. Expect rain on 34% of days — a light raincoat in the bag is recommended. Not the best window, but acceptable if dates are constrained. July (7.8/10) is significantly better if possible.
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All months for Cologne
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌦️ January | 1°C | 6°C | 51% | 2.8 | 3.7h | 1.5/10 |
| 🌦️ February | 2°C | 9°C | 45% | 2.5 | 6.1h | 4.0/10 |
| 🌦️ March | 3°C | 11°C | 42% | 2.3 | 8.3h | 4.4/10 |
| ⛅ April | 6°C | 15°C | 38% | 1.9 | 10.7h | 7.0/10 |
| 🌤️ May | 10°C | 19°C | 38% | 2.2 | 12.3h | 7.2/10 |
| 🌤️ June | 14°C | 23°C | 40% | 2.7 | 12.8h | 7.7/10 |
| 🌤️ July | 15°C | 24°C | 40% | 2.9 | 12.7h | 7.8/10 |
| 🌤️ August | 15°C | 24°C | 39% | 2.1 | 11.8h | 7.7/10 |
| 🌤️ September | 13°C | 20°C | 34% | 2.7 | 10.5h | 7.3/10 |
| 🌦️ October | 9°C | 15°C | 45% | 2.4 | 6.1h | 4.6/10 |
| 🌦️ November | 5°C | 10°C | 47% | 2.5 | 4.9h | 4.0/10 |
| 🌦️ December | 3°C | 7°C | 53% | 2.7 | 2.8h | 1.4/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In September, Cologne averages 20°C, 34% rainy days and 10.5h of sunshine per day. Overall weather score: 7.3/10.
See methodology →
Comparison
September vs July (best month)
The best month is July (score 7.8/10). Difference:
- 🌡️ Max temperature : +4°C
- 🌧 Rainy days : +6%
- ☀️ Sunshine : +2.2h/day
FAQ
FAQ — Cologne in September
Is September a good time to visit Cologne?
September is an acceptable time for Cologne (score 7.3/10). Conditions are decent but not optimal — consider July (7.8/10) if possible.
What to do in Cologne in September?
With 20°C max and 10.5h of sunshine, focus on cultural sites, museums and local gastronomy.
Accommodation
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Activities & tours
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