September 21 is generally a great time to visit Düsseldorf. While there is a slight chance of rain (18%), showers are usually brief. Expect comfortable 19°C weather. Düsseldorf is currently in its most popular travel window, meaning vibrant crowds and premium pricing.
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Essential Travel Info for Düsseldorf
Currency
EUR
€ Euro
Language
German
Driving
Right side
Safety
Very High Safety
GPI: 1.462
Düsseldorf Weather Forecast for September 21
"Mild & Comfortable. Expect average highs of 19.4°C. 18% chance of rain."
What to Wear in Düsseldorf in September
Based on historical data for September 21, Düsseldorf typically experiences temperatures between 10.9°C and 19.4°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (18% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Düsseldorf
Smart Suitcase
- Light Jacket
- Long Pants
Average High
19.4°C
Daytime Peak
Average Low
10.9°C
Nighttime Low
Feels Like
19.4°C
🌤️ Feels accurate
Rain Chance
18%
Avg 0.9mm if it rains
Cloud Cover
58%
Overcast
Pressure
1017.8 hPa
Medium volatility
Düsseldorf Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 94% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 36 min to burn
Type III-IV
🟡 54 min to burn
Type V-VI
🟢 90 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
14.8°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Germany
Flight Traffic
High
100/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~267
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Düsseldorf
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:18
☀️ Noon
12:27
🌇 Sunset
18:36
⏱️ Daylight
12h 18m
Wind Speed
15.1 km/h
Gentle breeze
Sunshine
8.5 hrs
Direct Sun (Cloud-free)
Humidity
75%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Düsseldorf
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Düsseldorf
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Moderate fluctuations. Some sensitivity possible.
Weather unlikely to affect joint pain.
Moderate fish activity expected.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Rare minor tremors. Buildings are earthquake-resistant.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Düsseldorf on September 21 averages 19.4°C with a 18% precipitation probability. Wedding/Outdoor Event Score: 98/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Düsseldorf Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (September 21) in other destinations
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📍 Is Düsseldorf Worth Visiting on September 21?
Planning a trip to Düsseldorf on September 21? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 19.4°C with a 18% historical precipitation risk.
✈️ Travel Logistics: Approximately 267 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 8 vaccinations are recommended for Germany, including COVID-19.
📊 Historical Extremes: The hottest September 21 recorded in the last 30 years saw temperatures hit 24.7°C in 2020, while the coldest dropped to 5.7°C in 2022.