Perth Weather in July

Thinking of visiting Perth in July? Expect pleasant temperatures reaching 18°C (64°F) during the day, dropping to 9°C (48°F) at night, and be prepared for the wettest month of the year.

Rainfall in Perth in July

This is the wettest month of the year, so having an umbrella ready is a smart choice. Typically, about 15 days will experience rainfall, with an average of 100 mm (3.9 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Perth in July

Expect highs of 18°C (64°F) in Perth in July, with nights dropping to around 9°C (48°F). July marks the winter season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. Enjoy a month of comfortably warm temperatures, despite being cooler than other months.

Sunshine in Perth in July

Expect a lot of sunshine this month, with about 191 hours of sun. These sunny conditions add to the overall experience.

Wind Speed in Perth in July

Average wind conditions reach 5 m/s (10 knots) in July. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in July

At 18°C (64°F), the water is getting there — comfortable enough for most swimmers, though those used to warmer seas may still find it a touch cool.

If you're looking for dry conditions and comfortable temperatures, July may not be the ideal month to visit Perth. Our weather planner can help you explore destinations with more pleasant weather conditions.

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For a detailed overview over the year and the best time to visit Australia, check out our Perth's climate page.

Perth Temperature in July

Min Temperature 9°C (48°F)  

Max Temperature 18°C (64°F)  

Water Temperature 18°C (64°F)  

Chance of Rain 50%  

Precipitation 100 mm (3.9 in)  

Rainy days 15 days  

Humidity 57%  

Windspeed 5 m/s (10 knots)  

Sunshine 191 hours  

Percentage Sunshine  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Perth typically stay consistent throughout July, with daily highs averaging around 18°C (64°F). Nights are cool, with lows around 8°C (46°F).

Average temperatures in July

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in July

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Historical weather for Perth in July

Browse day-by-day weather records for Perth spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Perth historical weather extremes in July

According to our 49 years of weather records for Perth, the following extremes were recorded between 1976 and 2025.

• On July 21, 1994, temperatures climbed to 26°C (79°F), marking the warmest July day on record.
• Perth experienced its chilliest July day on July 16, 1982, reaching only 10°C (50°F).
• Perth registered its coldest July night on July 25, 2025, with temperatures dropping to -1°C (30°F).

What to Wear in Perth in July

Pleasant temperatures in July mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Expect water temperatures of around 18°C (64°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Perth in July

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Australia, check out our Perth's climate page.

More climate data for Perth

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Perth climate overview or explore weather in Australia.