Mount Isa weather in August 2026

Q: How hot is it in Mount Isa in August?

Daytime temperatures usually reach 22°C in Mount Isa in August, falling to 10°C at night.

Q: How sunny is it in Mount Isa in August?

There are normally 8 hours of bright sunshine each day in Mount Isa in August - that's 75% of daylight hours.

Q: How warm is the sea around Mount Isa in August?

The average sea temperature around Mount Isa in August is 20°C.

Q: Does it rain in Mount Isa in August?

There are usually 7 days with some rain in Mount Isa in August and the average monthly rainfall is 43mm.

Expect daytime maximum temperatures of 26°C in Mount Isa, Queensland in August based on long-term weather averages. There are 10 hours of sunshine per day on average.

26
26°C max day temperature
10
10 hours of sunshine per day
2
2 days with some rainfall
10
10°C min night temperature
11
11 hours of daylight per day
L
Low heat & humidity
7
7 mm of monthly rainfall
8
8 (Very High) UV index

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The August weather guide for Queensland (Mount Isa) 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)