France Paris Weather in September — Climate Guide
September in Paris is Excellent
September is Excellent for Paris.
September is genuinely the best month to visit Paris. La Rentrée (back-to-school week, first week of September) marks the city's return from summer holidays — bistros reopen, locals return, and Paris hits full operating capacity.
Weather is ideal: 20-22°C / 68-72°F daytime, 12-14°C / 54-57°F evenings, lower humidity than summer. Crisp light is photographically perfect — September is often considered Paris's most photogenic month.
Travel score
Paris September Weather Stats
Avg High
21°C
Avg Low
12°C
Rainy Days
9
55mm total
Sunshine
5.5h
Daily avg
Humidity
73%
Comfortable
UV Index
5
Moderate
Wind
11 km/h
Gusts 23
Crowds
Busy
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
19 μg/m³
PM10
28 μg/m³
Status
Moderate
Feels-Like Temperature & Wind
Feels like
Daytime
21°C
Nighttime
12°C
Humidity and wind affect how the actual temperature feels.
Wind
11 km/h
Max gust 23 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Best weather of the year (20-22°C, low humidity)
- Heritage Days — free Élysée Palace entry
- Photographically perfect light
Cons
- Hotel prices remain at peak
- Fashion Week fills central hotels
- Some museum collections rotated for autumn programming
September Events & Festivals
- La Rentrée — back to school, reopening of bistros after August
- Paris Fashion Week (last week of September)
- Heritage Days (Journées du Patrimoine, 3rd weekend) — free entry to government buildings normally closed to public
Paris in September — Full Picture
September is genuinely the best month to visit Paris. La Rentrée (back-to-school week, first week of September) marks the city's return from summer holidays — bistros reopen, locals return, and Paris hits full operating capacity.
Weather is ideal: 20-22°C / 68-72°F daytime, 12-14°C / 54-57°F evenings, lower humidity than summer. Crisp light is photographically perfect — September is often considered Paris's most photogenic month.
Paris Fashion Week (last week of September) brings a glamorous energy. While runway shows are industry-only, you can see street-style influencers and watch arrivals at the Louvre, Trocadéro, and major hotels. Hotels around the Right Bank fashion district get fashion-week premium pricing.
Journeys du Patrimoine (Heritage Days, third weekend of September) opens 1,000+ government buildings normally closed to the public — including the Élysée Palace (presidential residence), Senate, French Constitutional Council. Free entry. Massive queues but unique experience.
Hotel prices remain in spring peak range but with one advantage: Paris is at its most enjoyable.
What to Wear & What to Pack
Sweater + light jacket. Daytime mild (21-23°C), evenings cooler (12-14°C). Crisp Paris autumn light is photographically perfect.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
16°C
7.3°C
10/mo
Summer (Jun·Jul·Aug)
24.3°C
15.3°C
8.3/mo
Autumn (Sep·Oct·Nov)
Current16°C
8.7°C
10.3/mo
Winter (Dec·Jan·Feb)
7.7°C
2.3°C
10/mo
Paris Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 7° | 2° | 10d·51mm | 2h | 84% | 1 | Quiet | Low season | |
| 8° | 2° | 9d·41mm | 3h | 81% | 2 | Quiet | Low season | |
| 12° | 4° | 10d·48mm | 4.5h | 75% | 3 | Moderate | Shoulder | |
| April (Best) | 16° | 7° | 9d·47mm | 5.5h | 70% | 4 | Busy | Peak |
| May (Best) | 20° | 11° | 11d·63mm | 6.5h | 70% | 6 | Busy | Peak |
| June (Best) | 23° | 14° | 9d·50mm | 7.5h | 67% | 7 | Busy | Peak |
| 25° | 16° | 8d·53mm | 8h | 67% | 8 | Very busy | Peak | |
| 25° | 16° | 8d·58mm | 7.5h | 70% | 7 | Very busy | Peak | |
| September (Best) | 21° | 12° | 9d·55mm | 5.5h | 73% | 5 | Busy | Peak |
| 16° | 9° | 11d·62mm | 4h | 80% | 3 | Busy | Shoulder | |
| 11° | 5° | 11d·56mm | 2.5h | 84% | 2 | Moderate | Low season | |
| 8° | 3° | 11d·59mm | 1.5h | 85% | 1 | Busy | Peak |
View Other Months
Paris September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Paris?
Paris in September is Excellent. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Paris in September?
Paris September averages a high of 21°C and a low of 12°C.
Does it rain much in Paris in September?
Paris September averages 55mm of rainfall over about 9 rainy days.
What should I wear in Paris in September?
Sweater + light jacket. Daytime mild (21-23°C), evenings cooler (12-14°C). Crisp Paris autumn light is photographically perfect.
What time are sunrise and sunset in Paris in September?
Paris September sunrise is 07:32 and sunset is 20:00, with 12h 28m of daylight.
What's the air quality like in Paris in September?
Paris September air quality (AQI) averages 45, rated Good. PM2.5 averages 19μg/m³.
What activities are recommended in Paris in September?
In September, Paris is great for Heritage Days (Élysée Palace tour), Fashion Week street-style watching, Bistro reopenings.
Is September peak season in Paris?
Paris September crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Paris
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.