Updated 2 Nov 2026 · recomputed nightly
Is September 2027 a good month to visit Paris?
Lively — the typical September day in Paris is calmer than 56% of its year.
The weather is the trade-off here, not the crowds.
Calm · Lively · Busy · Packed rank a day against Paris's own year — not a headcount.
September 2027 is a shoulder month in Paris: warm and showery, around 23°C / 73°F with rain on about 8 days, Lively on 26 of 30 days — 4 days run Busy or Packed.
Yes. The typical September day in Paris is Lively, and only 4 of the 30 days in our window run Busy or Packed. Expect around 23 °C by day, with rain on about 8 days. The crowd comes with the school holidays in Germany. Cruise ships call on 16 of the 30 days, 3 at once on Tuesday 21 September. Late September is the month's quietest stretch in Paris — the typical day at 42%, against 47% in mid September. The crush is at the Louvre pyramid and Tuileries axis; the quiet is at the covered passages. The calmest day is Thursday 16 September, the busiest Tuesday 21 September.
In short, a solid middle-ground pick.
Among the 12 months we forecast for Paris, September ranks 10th for crowd pressure. Its heaviest day is Tue 21 Sep, busier than 83% of the year; its lightest is Thu 16 Sep at 41%.
Preparing pays off in a month like this: timed-entry tickets and pre-booked tours turn the queue time into sightseeing time. see the options →
Nothing extreme to plan around — rain on 8 of 30 days.
The one thing you wear all day, every day of the trip.
See walking shoes →
A folding one lives in the day bag and weighs nothing.
See umbrellas →
How busy is Paris in September?
The busiest days are the 15th, 20th, 21st and 22nd. Away from those, most days sit Lively. The calmest stretch is the 1st–14th.
Ships call on 16 of 30 days, a typical call day carrying at least 2,996 guests between them — real, but a secondary part of the crowd here; the season moves the needle more.
The month is not one thing: its lightest day sits at 41% of the year and its heaviest at 83%, so where you land inside it matters. Daylight runs about 12 hours.
Either side of it, August picks up and October picks up.
The calmest days include the 16th, 17th and 19th — 8 days share that level, so there is room to choose.
Wed 01 Sep Lively busier than 44% of days here · ⚓1 · Germany school holidays
- Seven Seas Voyager — guest capacity 706 07:00–21:00
Record Paris on Wed 1 Sep 2027 is forecast Lively. Why: school holidays in Germany. 1 cruise ship scheduled, at least 706 guests at double occupancy; ships in port 07:00–21:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-01 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 02 Sep Lively busier than 42% of days here · Germany school holidays
Record Paris on Thu 2 Sep 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-02 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 03 Sep Lively busier than 53% of days here · ⚓1 · Germany school holidays
- Celebrity Eclipse — guest capacity 2,850 07:00–23:00
Record Paris on Fri 3 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 2,850 guests at double occupancy; ships in port 07:00–23:00. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-03 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 04 Sep Lively busier than 42% of days here · ⚓1 · Germany school holidays
- Amadeus Diamond — guest capacity 146 03:00–09:00
Record Paris on Sat 4 Sep 2027 is forecast Lively. Why: school holidays in Germany. 1 cruise ship scheduled, at least 146 guests at double occupancy; ships in port 03:00–09:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-04 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 05 Sep Lively busier than 42% of days here · Germany school holidays
Record Paris on Sun 5 Sep 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-05 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 06 Sep Lively busier than 43% of days here · Germany school holidays
Record Paris on Mon 6 Sep 2027 is forecast Lively. Why: Germany school holidays; United States public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-06 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 07 Sep Lively busier than 49% of days here · ⚓1 · Germany school holidays
- AIDAperla — guest capacity 3,286 08:00–20:00
Record Paris on Tue 7 Sep 2027 is forecast Lively. Why: school holidays in Germany. 1 cruise ship scheduled, at least 3,286 guests at double occupancy; ships in port 08:00–20:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-07 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 08 Sep Lively busier than 43% of days here · Germany school holidays
Record Paris on Wed 8 Sep 2027 is forecast Lively. Why: Germany school holidays; Spain public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-08 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 09 Sep Lively busier than 55% of days here · ⚓1 · Germany school holidays
- Majestic Princess — guest capacity 3,560 07:00–20:00
Record Paris on Thu 9 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 3,560 guests at double occupancy; ships in port 07:00–20:00. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-09 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 10 Sep Lively busier than 42% of days here · Germany school holidays
Record Paris on Fri 10 Sep 2027 is forecast Lively. Why: school holidays in Germany. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-10 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 11 Sep Lively busier than 48% of days here · ⚓2 · Germany school holidays
- Mein Schiff 2 — guest capacity 2,534 07:00–19:00
- Tauck MS Serene — guest capacity 124
Record Paris on Sat 11 Sep 2027 is forecast Lively. Why: Germany school holidays; Spain public holiday. 2 cruise ships scheduled, at least 2,658 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-11 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 12 Sep Lively busier than 47% of days here · ⚓1 · Germany school holidays
- Carnival Miracle — guest capacity 2,124 07:00–20:00
Record Paris on Sun 12 Sep 2027 is forecast Lively. Why: school holidays in Germany. 1 cruise ship scheduled, at least 2,124 guests at double occupancy; ships in port 07:00–20:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-12 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 13 Sep Lively busier than 47% of days here · ⚓2 · Germany school holidays
- Oceania Insignia — guest capacity 698 08:00–19:00
- Queen Anne — guest capacity 2,996
Record Paris on Mon 13 Sep 2027 is forecast Lively. Why: school holidays in Germany. 2 cruise ships scheduled, at least 3,694 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-13 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 14 Sep Lively busier than 52% of days here · ⚓2
- Costa Diadema — guest capacity 3,772 07:00–18:00
- Tauck MS Reverie — guest capacity 124
Record Paris on Tue 14 Sep 2027 is forecast Lively. 2 cruise ships scheduled, at least 3,896 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-14 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 15 Sep Busy busier than 71% of days here · ⚓2 · Spain public holiday
- Costa Favolosa — guest capacity 3,014 07:00–20:00
- Norwegian Star — guest capacity 2,348 06:00–20:00
Record Paris on Wed 15 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 5,362 guests at double occupancy; ships in port 06:00–20:00. Why: Spain public holiday. Nearest calmer day: Tue 14 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/paris/#d-2027-09-15 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 16 Sep Lively busier than 41% of days here
Record Paris on Thu 16 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-16 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 17 Sep Lively busier than 41% of days here · ⚓1
- MS Jane Austen — guest capacity 148
Record Paris on Fri 17 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 148 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-17 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 18 Sep Lively busier than 44% of days here · ⚓2
- Amadeus Diamond — guest capacity 146 03:00–09:00
- Seven Seas Voyager — guest capacity 706 08:00–20:00
Record Paris on Sat 18 Sep 2027 is forecast Lively. 2 cruise ships scheduled, at least 852 guests at double occupancy; ships in port 03:00–20:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-18 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 19 Sep Lively busier than 41% of days here
Record Paris on Sun 19 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-19 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 20 Sep Busy busier than 67% of days here · ⚓2 · Germany public holiday
- Carnival Miracle — guest capacity 2,124 07:00–20:00
- Norwegian Jewel — guest capacity 2,388 07:00–21:00
Record Paris on Mon 20 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 4,512 guests at double occupancy; ships in port 07:00–21:00. Why: Germany public holiday. Nearest calmer day: Sun 19 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/paris/#d-2027-09-20 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 21 Sep Busy busier than 83% of days here · ⚓3
- AIDAperla — guest capacity 3,286 08:00–20:00
- Majestic Princess — guest capacity 3,560 07:00–20:00
- Oceania Marina — guest capacity 1,258 08:00–17:00
Record Paris on Tue 21 Sep 2027 is forecast Busy. 3 cruise ships scheduled, at least 8,104 guests at double occupancy; ships in port 07:00–20:00. Nearest calmer day: Sun 19 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/paris/#d-2027-09-21 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 22 Sep Busy busier than 67% of days here · ⚓2
- Costa Favolosa — guest capacity 3,014 08:00–20:00
- Norwegian Jewel — guest capacity 2,388 07:00–20:00
Record Paris on Wed 22 Sep 2027 is forecast Busy. 2 cruise ships scheduled, at least 5,402 guests at double occupancy; ships in port 07:00–20:00. Nearest calmer day: Thu 23 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/paris/#d-2027-09-22 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 23 Sep Lively busier than 46% of days here · ⚓1
- Queen Anne — guest capacity 2,996
Record Paris on Thu 23 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 2,996 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-23 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 24 Sep Lively busier than 41% of days here
Record Paris on Fri 24 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-24 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 25 Sep Lively busier than 41% of days here · ⚓1
- Amadeus Diamond — guest capacity 146 03:00–09:00
Record Paris on Sat 25 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 146 guests at double occupancy; ships in port 03:00–09:00. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-25 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 26 Sep Lively busier than 44% of days here · ⚓2
- Seven Seas Splendor — guest capacity 754 07:00–19:00
- Viking Astrea — size unknown (uncounted)
Record Paris on Sun 26 Sep 2027 is forecast Lively. 2 cruise ships scheduled, at least 754 guests at double occupancy, plus 1 of unknown size. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-26 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 27 Sep Lively busier than 56% of days here · ⚓2
- Mariner Of The Seas — guest capacity 3,334 07:00–21:00
- Tauck MS Serene — guest capacity 124
Record Paris on Mon 27 Sep 2027 is forecast Lively. 2 cruise ships scheduled, at least 3,458 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-27 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 28 Sep Lively busier than 41% of days here
Record Paris on Tue 28 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-28 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 29 Sep Lively busier than 41% of days here
Record Paris on Wed 29 Sep 2027 is forecast Lively. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-29 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 30 Sep Lively busier than 41% of days here · ⚓1
- Tauck MS Reverie — guest capacity 124
Record Paris on Thu 30 Sep 2027 is forecast Lively. 1 cruise ship scheduled, at least 124 guests at double occupancy. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/paris/#d-2027-09-30 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Which week of September is quietest in Paris?
Late September is the month's quietest stretch in Paris — the typical day at 42%, against 47% in mid September.
Can't move the dates? How to avoid the worst crowds
- Need flexibility? The 1st–14th is the month's calmest stretch — the easiest window to move around in.
- On the busy days, the walk-up queues for the big sights are the biggest time-sink — a timed-entry ticket skips them, which is where a busy month is won or lost.
Travelling on a busy day?
Timed-entry and skip-the-line tickets turn queue time into sightseeing time — sort them before you fly.
September weather in Paris
Comfortably warm — around 23°C / 73°F, easy shirtsleeve weather, with rain on about 8 days, so keep a layer handy.
Worth booking the marquee sights ahead for the busy days, but you can keep the rest of the trip flexible.
More about Paris in September
Based on: France's public holidays · school vacations across France and Germany · the season pattern from official overnight stays · five years of weather records (2019–2023) · confirmed event dates · the published cruise schedule
Every figure is recomputed nightly from real cruise schedules, public and school holidays, and long-run climate normals. Gaps are shown, not filled.
