Perth in July
July is right in the heart of winter for Perth, and the weather has a definite personality this time of year.
The average daily maximum is 18.0 degrees with overnight lows of 10.9 degrees. It's cool but manageable. A jumper handles most of it.
July is 6.7 degrees cooler than Perth's yearly average.
You're looking at 154mm of rain across 17 days in a typical July. That's serious rainfall.
Sunshine-wise, July delivers around 10.4 MJ/m2 of daily solar radiation. UV sits in the moderate category. Sunscreen is still wise, especially if you burn easily.
At 4.0/10 on the Comfort Score, July is middle of the road.
For your suitcase: a decent jumper or fleece, and a rain jacket or compact umbrella.
Check the data table below for the full picture, or compare Perth in July with another destination.
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
- A jumper or light cardigan for flexibility
- Proper rain gear for frequent showers
Coming From Overseas?
How July in Perth stacks up against major cities around the world.
About 6 degrees cooler and considerably wetter.
About 13 degrees cooler and considerably wetter.
About 12 degrees cooler and considerably drier.
How July Compares
Perth's monthly climate at a glance. July is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 30.2 | 19.1 | 1mm | 7.2 |
| Feb | 33.2 | 20.5 | 18mm | 4.8 |
| Mar | 29.3 | 17.4 | 4mm | 7.6 |
| Apr | 27.5 | 15.9 | 20mm | 8.2 |
| May | 24.4 | 14.6 | 94mm | 9.0 |
| Jun | 18.7 | 11.2 | 113mm | 4.9 |
| Jul | 18.0 | 10.9 | 154mm | 4.0 |
| Aug | 18.2 | 12.2 | 168mm | 4.1 |
| Sep | 20.6 | 11.1 | 27mm | 8.3 |
| Oct | 22.4 | 13.1 | 43mm | 9.7 |
| Nov | 24.9 | 14.9 | 25mm | 10.0 |
| Dec | 29.5 | 18.9 | 6mm | 7.5 |