Weather in Perth in July 2025
- July is usually the coldest month of the year in Perth;
- July is usually the wettest month of the year in Perth;
Average weather
Average temperature in Perth in July
Going from a maximum of +22°C during the day to a minimum of +5°C during the night, the temperature in July averages around +18°C.
The average maximum temperature goes up 18% by the end of the month, compared with the beginning of the month, from +17°C to +20°C.
Is Perth warm or cold in July?
Perth is typically mild in July.
Maximum temperatures go down compared to the previous month from +18°C to +17°C. The minimum temperature also goes down from +10°C to +9°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
July is the coldest month in Perth, here is the comparison with other months:
Water temperature in Perth in July
Water in Perth in July is Fresh. It varies from +19°C to +21°C, with an average of +20°C. Note that the air temperature is lower than the water temperature, averaging around +17°C.
In July, water temperatures are average relative to the rest of the year:
Can you swim in Perth in July?
Climate in Perth in July
| June | July | August | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +18°C | +17°C | +18°C | ||||
| Min. temperature | ||||||
| 0°C | -1°C | +1°C | ||||
| Max. temperature | ||||||
| +25°C | +25°C | +29°C | ||||
| Rainfall | ||||||
| 110 mm | 121 mm | 103 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +21°C | +20°C | +19°C | ||||
| Humidity | ||||||
| 74% | 75% | 74% | ||||
| Air pressure | ||||||
| 1018 HPa | 1018 HPa | 1018 HPa | ||||
| Sunny days | ||||||
| 9 | 7 | 9 | ||||
| Cloudy days | ||||||
| 5 | 6 | 6 | ||||
| Rainy days | ||||||
| 15 | 17 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
July typically has worse weather conditions compared to June. It’s getting colder in July. From +18°C in the day, the average maximum temperature lowers to +17°C. Prepare for more rain. Average rainfall goes from 110 mm to 121 mm. Humidity rises from 74% to 75%. The average wind speed doesn’t change much during July, staying around 4 m/s. The days becoming less sunny, going from 9 sunny days in June to 7 in July.
But maybe it is worth considering traveling in August as the weather gets better.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Perth is gradually decreasing during July, going from 4 m/s to 3 m/s over the course of the month.
Rain
How was the weather last July in Perth?
Climate Change over Years
The climate in Perth in July has not changed much over the last 43 years.
The average temperature was the lowest in 1990 (+22°C) and the highest in 2023 (+25°C). The driest year was 2010 with only 285 mm of rainfall, and the wettest year was 2012 with 1017 mm.
FAQ
Is July a good time to visit Perth?
Can you sunbathe in Perth in July?
Can you swim in Perth in July?
Is Perth rainy in July?
Is it sunny in Perth in July?
Other cities in Australia
Monthly weather in Perth
Source of the data
For this page, we’ve looked at the typical weather in Perth, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.