Alta weather in September 2025

Expect 10°C daytime maximum temperatures in the shade with on average 3 hours of sunshine per day in Alta in September. Check more long-term weather averages for Alta in September before you book your next holiday to Norway in 2025/2026.

  • 10°C maximum daytime temperature in September in Alta10
    10°C max day temperature
  • 3 hours of sunshine per day
  • 18 days with some rainfall in September in Alta18
    18 days with some rainfall
  • 3°C minimum night-time temperature in September in Alta3
    3°C min night temperature
  • 13 hours of daylight per day in September in Alta13
    13 hours of daylight per day
  • No heat & humidity in September in Alta0
    No heat & humidity
  • 58 mm monthly rainfall in September in Alta58
    58 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in September in Alta1
    1 (Low) UV index
  • 9°C sea temperature in September in Alta9
    9°C sea temperature

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The September weather guide for Norway (Alta) 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 Norway

How warm is it in Alta in September?

Daytime temperatures usually reach 10°C in Alta in September, falling to 3°C at night.

How sunny is it in Alta in September?

There are normally 3 hours of bright sunshine each day in Alta in September - that's 25% of daylight hours.

Is the sea cold around Alta in September?

The average sea temperature around Alta in September is 9°C.

Does it rain in Alta in September?

There are usually 18 days with some rain in Alta in September and the average monthly rainfall is 58mm.

Alta September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 03:43 19:08
Monday, 15th September 2025 04:40 18:02
Tuesday, 30th September 2025 05:39 16:53

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