Fredericton weather in September 2025

Expect 66°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Fredericton in September. Check more long-term weather averages for Fredericton in September before you book your next holiday to New Brunswick in 2025/2026.

  • 66°F maximum daytime temperature in September in Fredericton66
    66°F max day temperature
  • 6 hours of sunshine per day
  • 11 days with some rainfall in September in Fredericton11
    11 days with some rainfall
  • 45°F minimum night-time temperature in September in Fredericton45
    45°F min night temperature
  • 12 hours of daylight per day in September in Fredericton12
    12 hours of daylight per day
  • No heat & humidity in September in Fredericton0
    No heat & humidity
  • 3.6 inches monthly rainfall in September in Fredericton3.6
    3.6 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Fredericton5
    5 (Moderate) UV index

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The September weather guide for New Brunswick (Fredericton) 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)  |  Imperial (°F)

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How hot is it in Fredericton in September?

Daytime temperatures usually reach 66°F in Fredericton in September, falling to 45°F at night.

How sunny is it in Fredericton in September?

There are normally 6 hours of bright sunshine each day in Fredericton in September - that's 44% of daylight hours.

Does it rain in Fredericton in September?

There are usually 11 days with some rain in Fredericton in September and the average monthly rainfall is 3.6 inches.

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

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

Fredericton September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:48 19:04
Monday, 15th September 2025 06:05 18:37
Tuesday, 30th September 2025 06:24 18:08

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