New York weather in September 2025

Expect daytime maximum temperatures of 24°C in New York, USA in September based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 92 mm of rainfall in the month.

  • 24°C maximum daytime temperature in September in New York (New York City)24
    24°C max day temperature
  • 7 hours of sunshine per day
  • 8 days with some rainfall in September in New York (New York City)8
    8 days with some rainfall
  • 16°C minimum night-time temperature in September in New York (New York City)16
    16°C min night temperature
  • 12 hours of daylight per day in September in New York (New York City)12
    12 hours of daylight per day
  • No heat & humidity in September in New York (New York City)0
    No heat & humidity
  • 92 mm monthly rainfall in September in New York (New York City)92
    92 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in New York (New York City)6
    6 (High) UV index
  • 21°C sea temperature in September in New York (New York City)21
    21°C sea temperature

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The September weather guide for New York (New York City) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top New York destinations

Below are average maximum temperatures at popular countries, regions and places in New York in September. Select a holiday destination to see more weather parameters.

All New York destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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More about New York

How hot is it in New York in September?

Daytime temperatures usually reach 24°C in New York City, New York in September, falling to 16°C at night.

How sunny is it in New York in September?

There are normally 7 hours of bright sunshine each day in New York City, New York in September - that's 59% of daylight hours.

How warm is the sea around New York in September?

The average sea temperature around New York City, New York in September is 21°C.

Does it rain in New York in September?

There are usually 8 days with some rain in New York City, New York in September and the average monthly rainfall is 92mm.

What is the chance of a hurricane in New York in September?

On average less than 1 day in September in New York City, New York is likely to be affected by the passage of one or more tropical storms.

New York September sunrise & sunset times

Browse the sunrise and sunset times for New York in September 2025. Select a month to view New York sunrise and sunset times for the next 12 months. The New York sunrise and sunset times shown below are for New York City.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:23 18:28
Monday, 15th September 2025 05:37 18:04
Tuesday, 30th September 2025 05:52 17:39

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