Exmouth weather in September 2025

Expect 29°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Exmouth in September. Check more long-term weather averages for Exmouth in September before you book your next holiday to Western Australia in 2025/2026.

  • 29°C maximum daytime temperature in September in Exmouth29
    29°C max day temperature
  • 11 hours of sunshine per day
  • 1 day with some rainfall in September in Exmouth1
    1 day with some rainfall
  • 14°C minimum night-time temperature in September in Exmouth14
    14°C min night temperature
  • 12 hours of daylight per day in September in Exmouth12
    12 hours of daylight per day
  • Low heat & humidity in September in ExmouthL
    Low heat & humidity
  • 3 mm monthly rainfall in September in Exmouth3
    3 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in September in Exmouth10
    10 (Very High) UV index
  • 22°C sea temperature in September in Exmouth22
    22°C sea temperature

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The September weather guide for Western Australia (Exmouth) 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 hot is it in Exmouth in September?

Daytime temperatures usually reach 29°C in Exmouth in September with low heat and humidity, falling to 14°C at night.

How sunny is it in Exmouth in September?

There are normally 11 hours of bright sunshine each day in Exmouth in September - that's 92% of daylight hours.

How warm is the sea around Exmouth in September?

The average sea temperature around Exmouth in September is 22°C.

Does it ever rain in Exmouth in September?

There is usually 1 day with some rain in Exmouth in September and the average monthly rainfall is 3mm.

Exmouth September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:33 18:14
Monday, 15th September 2025 06:20 18:18
Tuesday, 30th September 2025 06:05 18:22

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