Updated 2 Nov 2026 · recomputed nightly
Is September 2027 a good month to visit New York City?
Packed — the typical September day in New York City is busier than 84% of its year.
If you are coming for something that only happens in September, that is the trade. If not, February is quieter.
Calm · Lively · Busy · Packed rank a day against New York City's own year — not a headcount.
This month's verified events: UN General Assembly high-level week (General Debate, 82nd session) (21–30 — expected) · US Open Tennis Championships (1–12).
September is one of New York City's busiest months: warm and wet, around 25°C / 76°F with rain on about 10 days, and Packed on 15 of 30 days.
Probably not. The typical September day in New York City is Packed, and 17 of the 30 days in our window run Busy or Packed, so most days feel crowded. Expect around 25 °C by day, with rain on about 10 days. The crowd comes with the school holidays in Germany. Cruise ships call on 10 of the 30 days, 2 at once on Tuesday 21 September. US Open Tennis Championships falls on 1–12 September. Late September is the month's quietest stretch in New York City — the typical day at 36%, against 99% in early September. For similar weather with fewer people, come in June or April. The crush is at Times Square's bowtie; the quiet is at Central Park's Ramble and North Woods.
In short, a hard sell — heavy crowds without the best of the weather.
Among the 12 months we forecast for New York City, September ranks 4th for crowd pressure. Its heaviest day is Wed 1 Sep, busier than 99% of the year; its lightest is Tue 14 Sep at 36%.
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 →
Pack for wet first — rain on 10 of 30 days.
A folding one lives in the day bag and weighs nothing.
See umbrellas →
Wet stone is the thing to plan around in a month this wet.
See walking shoes →
How busy is New York City in September?
The busiest days are the 1st, 2nd, 3rd and 4th, and 13 more. Away from those, most days sit Calm. The calmest stretch is the 22nd–30th.
Ships call on 10 of 30 days, a typical call day carrying at least 928 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 36% of the year and its heaviest at 99%, so where you land inside it matters. Daylight runs about 12 hours.
Either side of it, August is busier still and October is a little calmer.
The calmest days include the 14th, 15th and 18th — 11 days share that level, so there is room to choose.
Wed 01 Sep Packed busier than 99% of days here · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
Record New York City on Wed 1 Sep 2027 is forecast Packed. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-01 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 02 Sep Packed busier than 99% of days here · ⚓1 · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
- Silver Shadow — guest capacity 388 07:00–17:00
Record New York City on Thu 2 Sep 2027 is forecast Packed. Why: school holidays in Germany; US Open Tennis Championships. 1 cruise ship scheduled, at least 388 guests at double occupancy; ships in port 07:00–17:00. Nearest calmer day: Tue 14 Sep (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-02 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 03 Sep Packed busier than 99% of days here · ⚓1 · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
- Crystal Serenity — guest capacity 740 07:00–18:00
Record New York City on Fri 3 Sep 2027 is forecast Packed. 1 cruise ship scheduled, at least 740 guests at double occupancy; ships in port 07:00–18:00. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-03 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 04 Sep Packed busier than 99% of days here · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
Record New York City on Sat 4 Sep 2027 is forecast Packed. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-04 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 05 Sep Packed busier than 99% of days here · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
Record New York City on Sun 5 Sep 2027 is forecast Packed. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-05 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 06 Sep Packed busier than 99% of days here · United States public holiday · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
Record New York City on Mon 6 Sep 2027 is forecast Packed. Why: United States public holiday; Germany school holidays; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-06 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 07 Sep Packed busier than 99% of days here · ⚓1 · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
- Oceania Vista — guest capacity 1,218 08:00–19:00
Record New York City on Tue 7 Sep 2027 is forecast Packed. 1 cruise ship scheduled, at least 1,218 guests at double occupancy; ships in port 08:00–19:00. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-07 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 08 Sep Packed busier than 99% of days here · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
Record New York City on Wed 8 Sep 2027 is forecast Packed. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-08 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 09 Sep Packed busier than 99% of days here · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
Record New York City on Thu 9 Sep 2027 is forecast Packed. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-09 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 10 Sep Packed busier than 99% of days here · ⚓1 · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
- Azamara Quest — guest capacity 722 06:00–18:00
Record New York City on Fri 10 Sep 2027 is forecast Packed. 1 cruise ship scheduled, at least 722 guests at double occupancy; ships in port 06:00–18:00. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-10 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 11 Sep Packed busier than 99% of days here · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
Record New York City on Sat 11 Sep 2027 is forecast Packed. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-11 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 12 Sep Packed busier than 99% of days here · Germany school holidays · US Open Tennis Championships
Event on this day
29 Aug – 12 Sep 2027The last Grand Slam of the tennis year, played on the hard courts of the National Tennis Center in Flushing, Queens — a free Fan Week of qualifying first, then the fortnight of the main draw, with the finals on the closing weekend.
Record New York City on Sun 12 Sep 2027 is forecast Packed. Why: school holidays in Germany; US Open Tennis Championships. Nearest calmer day: Tue 14 Sep (Calm). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-12 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 13 Sep Packed busier than 94% of days here · ⚓1 · Germany school holidays
- Mein Schiff 1 — guest capacity 2,534 07:00–?
Record New York City on Mon 13 Sep 2027 is forecast Packed. 1 cruise ship scheduled, at least 2,534 guests at double occupancy. Why: school holidays in Germany. Nearest calmer day: Tue 14 Sep (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-13 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 14 Sep Calm busier than 36% of days here
Record New York City on Tue 14 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-14 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 15 Sep Calm busier than 36% of days here
Record New York City on Wed 15 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-15 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 16 Sep Busy busier than 73% of days here · ⚓1
- Viking Mars — guest capacity 928 02:00–?
Record New York City on Thu 16 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 928 guests at double occupancy. Nearest calmer day: Wed 15 Sep (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-16 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 17 Sep Packed busier than 95% of days here · ⚓1
- Queen Mary 2 — guest capacity 2,726
Record New York City on Fri 17 Sep 2027 is forecast Packed. 1 cruise ship scheduled, at least 2,726 guests at double occupancy. Nearest calmer day: Thu 16 Sep (Busy). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-17 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 18 Sep Calm busier than 36% of days here
Record New York City on Sat 18 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-18 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 19 Sep Busy busier than 65% of days here · ⚓1
- Oceania Sirena — guest capacity 684 08:00–17:00
Record New York City on Sun 19 Sep 2027 is forecast Busy. 1 cruise ship scheduled, at least 684 guests at double occupancy; ships in port 08:00–17:00. Nearest calmer day: Sat 18 Sep (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-19 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 20 Sep Lively busier than 51% of days here · Germany public holiday
Record New York City on Mon 20 Sep 2027 is forecast Lively. Why: Germany public holiday. The day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-20 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 21 Sep Packed busier than 95% of days here · ⚓2
- AIDAluna — guest capacity 2,050 08:00–?
- Seven Seas Grandeur — guest capacity 754 07:00–17:00
Record New York City on Tue 21 Sep 2027 is forecast Packed. 2 cruise ships scheduled, at least 2,804 guests at double occupancy. Nearest calmer day: Mon 20 Sep (Lively). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/new-york-city/#d-2027-09-21 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 22 Sep Calm busier than 36% of days here
Record New York City on Wed 22 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-22 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 23 Sep Calm busier than 36% of days here
Record New York City on Thu 23 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-23 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Fri 24 Sep Lively busier than 50% of days here · ⚓2
- Explora IV — size unknown (uncounted)
- Silver Shadow — guest capacity 388 19:00–?
Record New York City on Fri 24 Sep 2027 is forecast Lively. 2 cruise ships scheduled, at least 388 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/new-york-city/#d-2027-09-24 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sat 25 Sep Calm busier than 36% of days here
Record New York City on Sat 25 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-25 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Sun 26 Sep Calm busier than 36% of days here
Record New York City on Sun 26 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-26 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Mon 27 Sep Calm busier than 36% of days here
Record New York City on Mon 27 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-27 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Tue 28 Sep Calm busier than 36% of days here
Record New York City on Tue 28 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-28 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Wed 29 Sep Calm busier than 36% of days here
Record New York City on Wed 29 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-29 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Thu 30 Sep Calm busier than 36% of days here
Record New York City on Thu 30 Sep 2027 is forecast Calm. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/new-york-city/#d-2027-09-30 (Avoid-Crowds, as of 2 Nov 2026; recomputed nightly.)
Which week of September is quietest in New York City?
Late September is the month's quietest stretch in New York City — the typical day at 36%, against 99% in early September.
Can't move the dates? How to avoid the worst crowds
- Need flexibility? The 22nd–30th 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 New York City
Comfortably warm — around 25°C / 76°F, easy shirtsleeve weather, with rain on about 10 days, so keep a layer handy.
Book beds and the big-ticket sights well ahead, and start your days by eight — in a month this full, the early hours are the only uncrowded ones.
More about New York City in September
Based on: United States' public holidays · school vacations in Germany · the official airport-arrivals pattern (BTS T-100, measured 2023–2025; airport-arrivals proxy for visitor volume) · 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.
