September 20 is generally a great time to visit Paris. While there is a slight chance of rain (20%), showers are usually brief. Expect comfortable 21°C weather. You'll enjoy Paris with reasonable crowd levels and competitive accommodation options.
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Essential Travel Info for Paris
Currency
EUR
€ Euro
Language
French
Driving
Right side
Connect
As of Sept 2021, Paris has 5G from all F...
Safety
High Safety
GPI: 1.895
Paris Weather Forecast for September 20
"Mild & Comfortable. Expect average highs of 20.9°C. 20% chance of rain."
What to Wear in Paris in September
Based on historical data for September 20, Paris typically experiences temperatures between 11.5°C and 20.9°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (20% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Paris
Smart Suitcase
- Light Jacket
- Long Pants
Average High
20.9°C
Daytime Peak
Average Low
11.5°C
Nighttime Low
Feels Like
21°C
☀️ Feels accurate
Rain Chance
20%
Avg 0.9mm if it rains
Cloud Cover
53%
Overcast
Pressure
1017.4 hPa
Medium volatility
Paris Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 92% 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
🔴 32 min to burn
Type III-IV
🟡 48 min to burn
Type V-VI
🟢 80 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.7°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 France
Flight Traffic
Moderate
51/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~654
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Paris
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:35
☀️ Noon
12:45
🌇 Sunset
18:55
⏱️ Daylight
12h 20m
Wind Speed
15 km/h
Gentle breeze
Sunshine
8.6 hrs
Direct Sun (Cloud-free)
Humidity
72%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Paris
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Paris
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
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Paris on September 20 averages 20.9°C with a 20% precipitation probability. Wedding/Outdoor Event Score: 98/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Paris Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (September 20) in other destinations
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United Kingdom
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🌍 Explore the same date in different destinations around the world
📍 Is Paris Worth Visiting on September 20?
Planning a trip to Paris on September 20? 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 20.9°C with a 20% historical precipitation risk.
✈️ Travel Logistics: Approximately 654 landing slots available daily during this period, indicating peak tourist activity.
💉 Health Advisory: 7 vaccinations are recommended for France, including COVID-19.
📊 Historical Extremes: The hottest September 20 recorded in the last 30 years saw temperatures hit 27.5°C in 2020, while the coldest dropped to 6.6°C in 2017.