Loch Lomond weather in September 2025

Expect daytime maximum temperatures of 59°F in Loch Lomond, Scotland in September based on long-term weather averages. There are 3 hours of sunshine per day on average with 22 days with some rainfall and typically 8.1 inches of rainfall in the month.

  • 59°F maximum daytime temperature in September in Loch Lomond59
    59°F max day temperature
  • 3 hours of sunshine per day
  • 22 days with some rainfall in September in Loch Lomond22
    22 days with some rainfall
  • 46°F minimum night-time temperature in September in Loch Lomond46
    46°F min night temperature
  • 13 hours of daylight per day in September in Loch Lomond13
    13 hours of daylight per day
  • No heat & humidity in September in Loch Lomond0
    No heat & humidity
  • 8.1 inches monthly rainfall in September in Loch Lomond8.1
    8.1 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Loch Lomond3
    3 (Moderate) UV index

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The September weather guide for Scotland (Loch Lomond) 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 Scotland

How warm is it in Loch Lomond in September?

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

How sunny is it in Loch Lomond in September?

There are normally 3 hours of bright sunshine each day in Loch Lomond in September - that's 27% of daylight hours.

Does it rain in Loch Lomond in September?

There are usually 22 days with some rain in Loch Lomond in September and the average monthly rainfall is 8.1 inches.

Loch Lomond September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:23 19:13
Monday, 15th September 2025 05:50 18:36
Tuesday, 30th September 2025 06:20 17:56

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