Fredrikstad weather in September 2025

Expect 59°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Fredrikstad in September. Check more long-term weather averages for Fredrikstad in September before you book your next holiday to Norway in 2025/2026.

  • 59°F maximum daytime temperature in September in Fredrikstad59
    59°F max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in September in Fredrikstad16
    16 days with some rainfall
  • 46°F minimum night-time temperature in September in Fredrikstad46
    46°F min night temperature
  • 13 hours of daylight per day in September in Fredrikstad13
    13 hours of daylight per day
  • No heat & humidity in September in Fredrikstad0
    No heat & humidity
  • 3.5 inches monthly rainfall in September in Fredrikstad3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Fredrikstad3
    3 (Moderate) UV index
  • 59°F sea temperature in September in Fredrikstad59
    59°F sea temperature

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The September weather guide for Norway (Fredrikstad) 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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More about Norway

How warm is it in Fredrikstad in September?

Daytime temperatures usually reach 59°F in Fredrikstad in September, falling to 46°F at night.

How sunny is it in Fredrikstad in September?

There are normally 5 hours of bright sunshine each day in Fredrikstad in September - that's 35% of daylight hours.

How warm is the sea around Fredrikstad in September?

The average sea temperature around Fredrikstad in September is 59°F.

Does it rain in Fredrikstad in September?

There are usually 16 days with some rain in Fredrikstad in September and the average monthly rainfall is 3.5 inches.

Fredrikstad September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:13 19:17
Monday, 15th September 2025 05:45 18:36
Tuesday, 30th September 2025 06:19 17:52

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