Mount Gambier weather in September 2025

Expect 15°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Mount Gambier in September. Check more long-term weather averages for Mount Gambier in September before you book your next holiday to South Australia in 2025/2026.

  • 15°C maximum daytime temperature in September in Mount Gambier15
    15°C max day temperature
  • 5 hours of sunshine per day
  • 10 days with some rainfall in September in Mount Gambier10
    10 days with some rainfall
  • 7°C minimum night-time temperature in September in Mount Gambier7
    7°C min night temperature
  • 12 hours of daylight per day in September in Mount Gambier12
    12 hours of daylight per day
  • No heat & humidity in September in Mount Gambier0
    No heat & humidity
  • 74 mm monthly rainfall in September in Mount Gambier74
    74 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Mount Gambier5
    5 (Moderate) UV index

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The September weather guide for South Australia (Mount Gambier) 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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How warm is it in Mount Gambier in September?

Daytime temperatures usually reach 15°C in Mount Gambier in September, falling to 7°C at night.

How sunny is it in Mount Gambier in September?

There are normally 5 hours of bright sunshine each day in Mount Gambier in September - that's 46% of daylight hours.

Does it rain in Mount Gambier in September?

There are usually 10 days with some rain in Mount Gambier in September and the average monthly rainfall is 74mm.

Mount Gambier September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:29 17:46
Monday, 15th September 2025 06:08 17:57
Tuesday, 30th September 2025 05:44 18:10

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