Glasgow weather in September 2025

Expect 21°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Glasgow in September. Check more long-term weather averages for Glasgow in September before you book your next holiday to Montana in 2025/2026.

  • 21°C maximum daytime temperature in September in Glasgow21
    21°C max day temperature
  • 8 hours of sunshine per day
  • 6 days with some rainfall in September in Glasgow6
    6 days with some rainfall
  • 6°C minimum night-time temperature in September in Glasgow6
    6°C min night temperature
  • 13 hours of daylight per day in September in Glasgow13
    13 hours of daylight per day
  • No heat & humidity in September in Glasgow0
    No heat & humidity
  • 26 mm monthly rainfall in September in Glasgow26
    26 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Glasgow5
    5 (Moderate) UV index

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The September weather guide for Montana (Glasgow) 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 the USA

How hot is it in Glasgow in September?

Daytime temperatures usually reach 21°C in Glasgow in September, falling to 6°C at night.

How sunny is it in Glasgow in September?

There are normally 8 hours of bright sunshine each day in Glasgow in September - that's 61% of daylight hours.

Does it rain in Glasgow in September?

There are usually 6 days with some rain in Glasgow in September and the average monthly rainfall is 26mm.

Glasgow September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:25 18:47
Monday, 15th September 2025 05:44 18:18
Tuesday, 30th September 2025 06:05 17:47

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