Cairns weather in September 2025

Expect 27°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Cairns in September. Check more long-term weather averages for Cairns in September before you book your next holiday to Queensland in 2025/2026.

  • 27°C maximum daytime temperature in September in Cairns27
    27°C max day temperature
  • 8 hours of sunshine per day
  • 3 days with some rainfall in September in Cairns3
    3 days with some rainfall
  • 18°C minimum night-time temperature in September in Cairns18
    18°C min night temperature
  • 12 hours of daylight per day in September in Cairns12
    12 hours of daylight per day
  • Moderate heat & humidity in September in CairnsM
    Moderate heat & humidity
  • 39 mm monthly rainfall in September in Cairns39
    39 mm of monthly rainfall
  • UV (maximum) index 11 (Extreme) in September in Cairns11
    11 (Extreme) UV index
  • 24°C sea temperature in September in Cairns24
    24°C sea temperature

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The September weather guide for Queensland (Cairns) 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 Cairns in September?

Daytime temperatures usually reach 27°C in Cairns in September with moderate heat and humidity, falling to 18°C at night.

How sunny is it in Cairns in September?

There are normally 8 hours of bright sunshine each day in Cairns in September - that's 67% of daylight hours.

How warm is the sea around Cairns in September?

The average sea temperature around Cairns in September is 24°C.

Does it ever rain in Cairns in September?

There are usually 3 days with some rain in Cairns in September and the average monthly rainfall is 39mm.

Cairns September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:24 18:10
Monday, 15th September 2025 06:13 18:12
Tuesday, 30th September 2025 06:00 18:14

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