Rochester weather in September 2025

Expect 22°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Rochester in September. Check more long-term weather averages for Rochester in September before you book your next holiday to New York in 2025/2026.

  • 22°C maximum daytime temperature in September in Rochester22
    22°C max day temperature
  • 7 hours of sunshine per day
  • 11 days with some rainfall in September in Rochester11
    11 days with some rainfall
  • 11°C minimum night-time temperature in September in Rochester11
    11°C min night temperature
  • 12 hours of daylight per day in September in Rochester12
    12 hours of daylight per day
  • No heat & humidity in September in Rochester0
    No heat & humidity
  • 75 mm monthly rainfall in September in Rochester75
    75 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Rochester6
    6 (High) UV index
  • 19°C sea temperature in September in Rochester19
    19°C sea temperature

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The September weather guide for New York (Rochester) 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.

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

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More about New York

How hot is it in Rochester in September?

Daytime temperatures usually reach 22°C in Rochester in September, falling to 11°C at night.

How sunny is it in Rochester in September?

There are normally 7 hours of bright sunshine each day in Rochester in September - that's 55% of daylight hours.

How warm is the sea around Rochester in September?

The average sea temperature around Rochester in September is 19°C.

Does it rain in Rochester in September?

There are usually 11 days with some rain in Rochester in September and the average monthly rainfall is 75mm.

What is the chance of a hurricane in Rochester in September?

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

Rochester September sunrise & sunset times

Browse the sunrise and sunset times for Rochester in September 2025. Select a month to view Rochester sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:35 18:45
Monday, 15th September 2025 05:50 18:20
Tuesday, 30th September 2025 06:07 17:53

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