United States New York Weather in September — Climate Guide
September in New York is Excellent
New York Weather in September — Quick Answer
As of 2026- Avg temp
- 25° / 16°
- Rainfall
- 100mm · 9 days
- Crowds
- Busy
As of 2026, New York in September averages a high of 25°C and low of 16°C with 100mm of rain over about 9 days. Sweater + light jacket. Daytime mild (22-25°C), evenings cooler (15-17°C). Crisp NYC autumn light is photographically perfect.
September is Excellent for New York.
September is genuinely the best month to visit NYC. Weather is ideal: 22-25°C / 72-77°F daytime, 15-17°C / 59-63°F evenings, lower humidity than summer. Crisp light is photographically perfect — September is often considered NYC's most photogenic month.
US Open tennis Grand Slam (late August through early September) is the biggest sporting event of the NYC year. Main draw tickets sell out months ahead but qualifying-week and outer-court tickets ($30-100) are more accessible.
Travel score
Year's best month — perfect weather, Fashion Week, and US Open all collide
September Weather at a Glance
September is NYC's most-recommended month. Average 25°C / 77°F highs and 17°C / 63°F lows — a near-perfect match for the human comfort zone. Humidity drops to 65% (significantly less sticky than July-August). Daylight 12h 45min (sunrise 6:30, sunset 7:15). Rain frequency drops to 9 days (lowest tied with October). Early September still feels summer; late September introduces autumn cool. Foliage starts late September in Central Park's Conservatory Garden.
September Travel Advice
Short-sleeves with a light cardigan for early-morning and late-evening cool. Comfortable walking shoes and a light jacket for late September. NYFW (first two weeks of September) brings models, influencers, and celebrities to Chelsea, SoHo, and Midtown — some shows accept public RSVP. Feast of San Gennaro (mid-September, 11 days, Mulberry Street in Little Italy, since 1926) is the Italian-American street festival — food, games, live music across 11 blocks. September 11 is the 9/11 commemoration day at the World Trade Center memorial — public ceremonies all day, the city pauses.
Flying In from Overseas
Post-peak season but US schools' Labor Day weekend (first Monday) is the year's last domestic-travel surge — schedule departure mid-September for value. Asian travelers face Korean Chuseok and Chinese mid-autumn holiday spikes (dates vary year-to-year). The last month before Daylight Saving Time ends — North American time difference shifts back by an hour in early November.
September Pricing Trends
Hotels: 3-star Midtown $400-550/night, 4-star $600-800. NYFW weeks see 30-40% premiums in Chelsea and SoHo. Mid-to-late September weekdays are the September value window.
New York September Weather Stats
Avg High
25°C
Avg Low
16°C
Rainy Days
9
100mm total
Sunshine
8.5h
Daily avg
Humidity
68%
Comfortable
UV Index
7
High
Wind
13 km/h
Gusts 25
Crowds
Busy
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
21 μg/m³
PM10
30 μg/m³
Status
Moderate
Feels-Like Temperature & Wind
Feels like
Daytime
25°C
Nighttime
16°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 25 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Best weather of the year (22-25°C, low humidity)
- Fashion Week celebrity energy
- Photographically perfect light
Cons
- Hotel prices remain at peak
- Fashion Week fills central hotels
- 9/11 Memorial Day brings somber atmosphere downtown
September Events & Festivals
- US Open tennis main draw (late August through early September)
- Fashion Week (early September) — biggest fashion event of the year
- 9/11 Memorial Day (September 11)
- Feast of San Gennaro in Little Italy (mid-September, 11 days)
New York in September — Full Picture
September is genuinely the best month to visit NYC. Weather is ideal: 22-25°C / 72-77°F daytime, 15-17°C / 59-63°F evenings, lower humidity than summer. Crisp light is photographically perfect — September is often considered NYC's most photogenic month.
US Open tennis Grand Slam (late August through early September) is the biggest sporting event of the NYC year. Main draw tickets sell out months ahead but qualifying-week and outer-court tickets ($30-100) are more accessible.
NYC Fashion Week (early September) brings runway shows, designer parties, and street-style energy. While main shows are industry-only, Spring Studios, Park Avenue Armory, and major hotel venues see celebrity arrivals from 4 PM onwards. Hotels around the Lincoln Center area get fashion-week premium pricing.
9/11 Memorial Day (September 11) is the somber annual commemoration. The reflecting pools and museum at Ground Zero become quiet, contemplative places. Annual Tribute in Light beams from Lower Manhattan (visible 60+ miles).
Feast of San Gennaro in Little Italy (mid-September, 11 days) is one of NYC's most colorful free street festivals — Italian food, music, religious processions on Mulberry Street.
Hotel prices remain in spring peak range but with one advantage: NYC is at its most enjoyable.
What to Wear & What to Pack
Sweater + light jacket. Daytime mild (22-25°C), evenings cooler (15-17°C). Crisp NYC autumn light is photographically perfect.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
16.7°C
7°C
12/mo
Summer (Jun·Jul·Aug)
28.7°C
19°C
10.3/mo
Autumn (Sep·Oct·Nov)
Current18.7°C
10.3°C
9.3/mo
Winter (Dec·Jan·Feb)
5.3°C
-1.7°C
10.3/mo
New York Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 4° | -3° | 11d·84mm | 5h | 64% | 1 | Moderate | Low season | |
| 6° | -2° | 10d·78mm | 6h | 64% | 2 | Moderate | Low season | |
| 11° | 2° | 12d·95mm | 7h | 62% | 4 | Moderate | Shoulder | |
| April (Best) | 17° | 7° | 12d·110mm | 8h | 60% | 6 | Busy | Peak |
| May (Best) | 22° | 12° | 12d·115mm | 9h | 64% | 8 | Busy | Peak |
| June (Best) | 27° | 17° | 11d·105mm | 10h | 65% | 9 | Very busy | Peak |
| 30° | 20° | 10d·105mm | 10h | 64% | 9 | Very busy | Peak | |
| 29° | 20° | 10d·105mm | 9h | 67% | 8 | Busy | Shoulder | |
| September (Best) | 25° | 16° | 9d·100mm | 8.5h | 68% | 7 | Busy | Peak |
| October (Best) | 19° | 10° | 9d·95mm | 8h | 65% | 5 | Busy | Shoulder |
| 12° | 5° | 10d·95mm | 6h | 65% | 3 | Busy | Peak | |
| 6° | 0° | 10d·90mm | 5h | 64% | 1 | Very busy | Peak |
View Other Months
New York September Hotel Picks
Frequently Asked Questions
Is September a good time to visit New York?
New York in September is Excellent. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in New York in September?
New York September averages a high of 25°C and a low of 16°C.
Does it rain much in New York in September?
New York September averages 100mm of rainfall over about 9 rainy days.
What should I wear in New York in September?
Sweater + light jacket. Daytime mild (22-25°C), evenings cooler (15-17°C). Crisp NYC autumn light is photographically perfect.
What time are sunrise and sunset in New York in September?
New York September sunrise is 06:30 and sunset is 19:00, with 12h 30m of daylight.
What's the air quality like in New York in September?
New York September air quality (AQI) averages 50, rated Good. PM2.5 averages 21μg/m³.
What activities are recommended in New York in September?
In September, New York is great for US Open tennis, Fashion Week street-style watching, Feast of San Gennaro.
Is September peak season in New York?
New York September crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit New York
View Other Months
Planning a September trip to New York?
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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.