Australia weather in August 2025

Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Australia in August. Check more long-term weather averages for Australia in August before you book your next holiday to Australia in 2025/2026.

  • 18°C maximum daytime temperature in August in Australia (Sydney)18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in August in Australia (Sydney)10
    10 days with some rainfall
  • 9°C minimum night-time temperature in August in Australia (Sydney)9
    9°C min night temperature
  • 11 hours of daylight per day in August in Australia (Sydney)11
    11 hours of daylight per day
  • No heat & humidity in August in Australia (Sydney)0
    No heat & humidity
  • 96 mm monthly rainfall in August in Australia (Sydney)96
    96 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in August in Australia (Sydney)4
    4 (Moderate) UV index
  • 17°C sea temperature in August in Australia (Sydney)17
    17°C sea temperature

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The August weather guide for Australia (Sydney) 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.

Top Australia destinations

Below are average maximum temperatures at popular countries, regions and places in Australia in August. Select a holiday destination to see more weather parameters.

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Metric (°C / mm)  |  Imperial (°F / inches)

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More about Australia

How hot is it in Australia in August?

Daytime temperatures usually reach 18°C in Sydney, Australia in August, falling to 9°C at night.

How sunny is it in Australia in August?

There are normally 7 hours of bright sunshine each day in Sydney, Australia in August - that's 67% of daylight hours.

How warm is the sea around Australia in August?

The average sea temperature around Sydney, Australia in August is 17°C.

Does it rain in Australia in August?

There are usually 10 days with some rain in Sydney, Australia in August and the average monthly rainfall is 96mm.

Australia August sunrise & sunset times

Browse the sunrise and sunset times for Australia in August 2025. Select a month to view Australia sunrise and sunset times for the next 12 months. The Australia sunrise and sunset times shown below are for Sydney.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 06:48 17:16
Saturday, 16th August 2025 06:33 17:26
Sunday, 31st August 2025 06:15 17:37

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