Dumfries weather in September 2026

Expect daytime maximum temperatures of 16°C in Dumfries, Scotland in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 18 days with some rainfall and typically 107 mm of rainfall in the month.

  • 16°C maximum daytime temperature in September in Dumfries16
    16°C max day temperature
  • 4 hours of sunshine per day
  • 18 days with some rainfall in September in Dumfries18
    18 days with some rainfall
  • 9°C minimum night-time temperature in September in Dumfries9
    9°C min night temperature
  • 13 hours of daylight per day in September in Dumfries13
    13 hours of daylight per day
  • No heat & humidity in September in Dumfries0
    No heat & humidity
  • 107 mm monthly rainfall in September in Dumfries107
    107 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Dumfries3
    3 (Moderate) UV index

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The September weather guide for Scotland (Dumfries) 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 Scotland

How warm is it in Dumfries in September?

Daytime temperatures usually reach 16°C in Dumfries in September, falling to 9°C at night.

How sunny is it in Dumfries in September?

There are normally 4 hours of bright sunshine each day in Dumfries in September - that's 28% of daylight hours.

How warm is the sea around Dumfries in September?

The average sea temperature around Dumfries in September is 13°C.

Does it rain in Dumfries in September?

There are usually 17 days with some rain in Dumfries in September and the average monthly rainfall is 71mm.

Dumfries September sunrise & sunset times

Browse the sunrise and sunset times for Dumfries in September 2026. Select a month to view Dumfries sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st September 2026 05:20 19:07
Tuesday, 15th September 2026 05:47 18:31
Wednesday, 30th September 2026 06:15 17:53

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