Perth weather in July
Temperature, sea and sunshine in July: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in July
Good
Best time to visit: March – May, September – December
What is the weather like in Perth in July?
In July, Perth is mild: daytime highs average 17 °C, and nights cool down to about 10 °C. The sea averages 19.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 105 mm in total. All in all, July is a good month for a holiday in Perth.
July compared
How the weather changes from June to August. Tap a month to open it.
More details for July
- Daylight
- 10 h 14 min07:15 – 17:29
- UV index
- 3 · moderateclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 25 km/haverage daily peak
- Cloud cover
- 48 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+8Australia/Perth
How the score comes together
- Temperatureweight 50 %87 %
- Sunshineweight 20 %53 %
- Few rainy daysweight 30 %39 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in July
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Perth in July: quick answers
Is Perth hot in July?
No. In July, Perth is mild: daytime highs average 17 °C and nights drop to about 10 °C.
Can you swim in Perth in July?
Only if you don't mind cold water: in July the sea averages just 19.8 °C. Comfortable swimming is possible from December to June.
Does it rain much in Perth in July?
Rain is frequent, with about 13 rainy days and 105 mm in total.
Perth month by month
The whole year in PerthAll destinations: Australia
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)