Mount Isa in July
July is right in the heart of winter for Mount Isa, and the weather has a definite personality this time of year.
Daytime highs average 23.3 degrees, dropping to 11.2 degrees overnight. That's a 12-degree swing between day and night. That's solidly pleasant territory. Great for being outdoors.
July is 8.0 degrees cooler than Mount Isa's yearly average.
Rainfall in July averages 15mm over about 2 days. That means roughly a 7% chance of rain on any given day, so you can leave the umbrella at the hotel.
Sunshine-wise, July delivers around 17.0 MJ/m2 of daily solar radiation. UV sits in the very high category. You'll want SPF 50+ and a decent hat.
July earns a 10.0/10 on our Comfort Score. This is prime time.
For your suitcase: a mix of short and long sleeves, something warmer for mornings and evenings, and serious sun protection.
Scroll down for the detailed climate data, or explore what nearby cities are like in July.
July at a Glance
Temperature Range
Daily temperature range in July. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Comfortable casual wear suitable for warm days
- Sunscreen (SPF 30+) and sunglasses for UV protection
Coming From Overseas?
How July in Mount Isa stacks up against major cities around the world.
About 1 degrees cooler and considerably drier.
About 8 degrees cooler and considerably drier.
About 7 degrees cooler and considerably drier.
How July Compares
Mount Isa's monthly climate at a glance. July is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 34.3 | 24.9 | 176mm | 2.1 |
| Feb | 31.2 | 23.1 | 132mm | 4.6 |
| Mar | 31.9 | 23.0 | 113mm | 4.5 |
| Apr | 30.0 | 18.6 | 1mm | 7.1 |
| May | 28.1 | 16.9 | 8mm | 7.9 |
| Jun | 24.6 | 12.0 | 4mm | 10.0 |
| Jul | 23.3 | 11.2 | 15mm | 10.0 |
| Aug | 29.5 | 16.1 | 0mm | 7.5 |
| Sep | 32.0 | 19.6 | 0mm | 5.9 |
| Oct | 36.3 | 23.2 | 11mm | 2.1 |
| Nov | 36.4 | 25.0 | 75mm | 1.2 |
| Dec | 37.7 | 25.2 | 16mm | 1.0 |