When to go · New York
New York in September
Great month. Warm and clear; UN General Assembly week closes roads.
Key facts
- Verdict
- Great
- Temperature
- 25°C (77°F)77°F (25°C) / 17°C (63°F)63°F (17°C)
- average high / low
- Rain days
- 9
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Warm and clear; UN General Assembly week closes roads.
All twelve months in one grid — weather, crowds and prices, with gaps left as unknown.
Is another month better than September?
No other month rates higher than September for New York in this guide.
Weather in September
- New YorkHighs around 25 °C (77 °F), lows around 17 °C (63 °F), rain on about 9 daysHighs around 77 °F (25 °C), lows around 63 °F (17 °C), rain on about 9 days
- Northeast, United States · New York, Boston, Washington, Philadelphia, Mainebest weather
Cold, sometimes snowy winters; humid 30 °C (86 °F)+ spells in July–August; late September to October is the pick for foliage and walking.Cold, sometimes snowy winters; humid 86 °F (30 °C)+ spells in July–August; late September to October is the pick for foliage and walking.
Autumn season
The best walking weather and foliage in the park.
Watch: UN week and marathon crowds.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
UN General Assembly
Third week · Midtown East
Traffic and closures.
Labor Day big impact
1st Monday of September · United States
End of summer; last big road-trip weekend.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.
Compare two months
Weather, crowds and prices for any two months in New York, side by side.
Verdict
Sep: Great
May: Great
Daytime high
Sep: 25 °C (77 °F)77 °F (25 °C)
May: 22 °C (72 °F)72 °F (22 °C)
Night low
Sep: 17 °C (63 °F)63 °F (17 °C)
May: 13 °C (55 °F)55 °F (13 °C)
Rain days
Sep: 9 (better)
May: 12
Crowds
Sep: Medium
May: Medium
Prices
Sep: Medium
May: Medium
Festivals listed
Sep: 2
May: 1
September: Warm and clear; UN General Assembly week closes roads.
May: Warm and comfortable; good walking.
New York: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.