Click on a day for an hourly weather forecast
The temperatures in Mount Isa in August are comfortable with low of 14°C and and high up to 27°C.
There is little to no rain in Mount Isa during August, so it’s a lot easier to explore the city. Just remember to dress in warm layers, as it can still get pretty chilly.
Our weather forecast can give you a great sense of what weather to expect in Mount Isa in August 2025.
If you’re planning to visit Mount Isa in the near future, we highly recommend that you review the 14 day weather forecast for Mount Isa before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 35° / 26° | 7 | 24 | 0 | 221 mm | Bad | Mount Isa in January |
| February | 34° / 25° | 5 | 23 | 0 | 143 mm | Ok | Mount Isa in February |
| March | 34° / 24° | 3 | 28 | 0 | 105 mm | Ok | Mount Isa in March |
| April | 31° / 21° | 1 | 29 | 0 | 17 mm | Good | Mount Isa in April |
| May | 27° / 17° | 0 | 31 | 0 | 13 mm | Perfect | Mount Isa in May |
| June | 24° / 13° | 0 | 30 | 0 | 8 mm | Perfect | Mount Isa in June |
| July | 24° / 13° | 1 | 31 | 0 | 9 mm | Perfect | Mount Isa in July |
| August | 27° / 14° | 0 | 31 | 0 | 3 mm | Perfect | Mount Isa in August |
| September | 31° / 18° | 1 | 29 | 0 | 24 mm | Good | Mount Isa in September |
| October | 34° / 22° | 1 | 30 | 0 | 21 mm | Ok | Mount Isa in October |
| November | 35° / 25° | 2 | 28 | 0 | 58 mm | Ok | Mount Isa in November |
| December | 36° / 26° | 4 | 27 | 0 | 83 mm | Ok | Mount Isa in December |