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Perth in July

Perth Weather in July

🇦🇺 Australia

17°C
High
9°C
Low
13
Rain Days
8h
Sunshine
70%
Humidity

Oceania › 🇦🇺 Australia › Perth

Updated: March 2026

Is July a Good Time to Visit Perth?

5/10
Fair

July is a fair time to visit Perth (5/10). With 8 daily sunshine hours and only 13 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 12th sunniest of the year in Perth. Culture-focused travellers and those who prefer lighter crowds will find July a practical choice, with prices running lower than peak January without sacrificing all the good weather. August offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Perth's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.

vs June:18°C avg high

The single most important thing to know about visiting Perth in July: rain is a genuine factor across 13 days of the month, meaning your plans need built-in indoor alternatives. Precipitation totals 103mm for the month, spread across roughly 13 days, and 8 sunshine hours per day give you a reliable window for outdoor plans.

17°C

Avg High

9°C

Avg Low

13 days

Rain Days

8h

Sunshine

70%

Humidity

Temperature in Perth in July

The 8°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 70%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. The UV index of 2 is low, meaning sun exposure is minimal concern and sunscreen is largely optional. Wind averages 25 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 63°F average high, 48°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).

Temperature in July

Monthly Precipitation (mm)

What to Wear in Perth in July

Morning9°CBefore the day warms up
Afternoon17°CPeak daytime temperature
Evening12°CAfter sunset cools down

Packing for Perth in July means dressing for 17°C days and 9°C evenings. A mid-weight jacket over a sweater handles 17°C daytime temperatures; the combination stays comfortable all day without overheating. Evening temperatures settle at 9°C, a modest 8°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 13 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes.

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Local tip: Layers are more practical than a single heavy garment in Perth. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.

Events in Perth in July

July has no major festivals or public holidays in Perth, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.

What to Pack for Perth in July

Based on 17°C average highs and 13 rainy days

  • Light jacket or cardigan for cooler evenings
  • Mix of short and long-sleeve layers
  • Comfortable walking shoes with good arch support
  • Compact folding umbrella
  • Waterproof outer layer or packable rain jacket
  • Quick-dry clothing that recovers fast after a shower
  • Universal travel adapter
  • Small day pack for city exploration
  • Reusable water bottle

Best Activities in Perth in July

  • Explore the old town's cobblestone backstreetsMorning (9-11am)At 17°C, conditions are pleasant for unhurried exploration on foot
  • Visit hilltop viewpoints for panoramic city viewsLate afternoon (4-6pm)Low sun angle creates dramatic light for photography while temperatures remain comfortable
  • Bicycle rental for a half-day city circuitMid-morning startMild 17°C temperatures are ideal for extended cycling without excessive effort
  • Boat tour of the river, bay, or canal networkLate morning departureComfortable weather makes open-deck boats viable without wind-chill concerns
  • Spend a morning in the national or city art museumOpens at 10am; arrive earlyWith 13 rain days expected, having a full-day indoor plan is practical insurance
  • Cooking class focused on regional cuisineHalf-day sessions run 10am-1pm or 3-6pmIndoor activity that fills a rainy half-day with genuine cultural content
  • Visit covered historical sites: cathedral, palace, or bazaarAny time; most crowded middayRoofed monuments and covered markets provide exploration without weather exposure
  • Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningJuly brings distinct seasonal changes to public green spaces worth exploring
  • Try the seasonal farmer's market for local produce and street foodSaturday morning markets typically 8am-1pmJuly seasonal produce is at peak availability, offering dishes not found at other times of year

Why is Perth mild in July?

July in Perth reflects a mid-latitude climate pattern, with temperatures averaging 17°C by day and 9°C overnight. The city sits at 32 degrees south latitude, where the balance between solar radiation and heat loss drives conditions that are neither extreme nor static. Conditions occupy the comfortable middle band of the annual temperature range, where outdoor activity is feasible without the extremes of midsummer heat or midwinter cold. Day-to-night temperature variation of 8°C is moderate and manageable with a single mid-layer. Climate data: Open-Meteo ERA5 (1991–2020).

Sunshine Hours

The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.

UV Index

A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate -- wear sunscreen. UV 6-7: High -- hat and SPF 30+ essential. UV 8-10: Very High -- limit midday exposure. UV 11+: Extreme -- seek shade between 10am-4pm.

Rain Days

A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.

Humidity

Relative humidity as a percentage. Below 40%: Dry -- skin and throat may feel parched. 40-60%: Comfortable -- ideal for most people. 60-80%: Sticky -- light, breathable fabrics recommended. Above 80%: Muggy -- heat feels more intense; quick-dry clothing is essential.

Frequently Asked Questions: Perth in July

In July, Perth experiences average highs of 17°C (63°F) and lows of 9°C (48°F). Expect around 13 rainy days and 8 hours of sunshine per day, with humidity averaging 70%. The 8°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an extra jacket is essential for evenings. UV exposure is moderate at index 2.
Perth typically sees 13 rainy days in July, with total precipitation of around 103mm. Rain is moderate and manageable. Showers tend to pass quickly, and a light rain layer or foldable umbrella is sufficient protection for most days. For context, the driest month in Perth typically sees 4-6 fewer rain days than July.
Pack a warm jacket, sweaters, and layering pieces for Perth in July. Temperatures can drop to 9°C at night, so thermal underlayers are advisable for evening outings. Waterproof footwear is important with 13 rainy days expected. A scarf, hat, and gloves handle the windchill on clear cold days, which often feel colder than the thermometer reads.
July is a reasonable time to visit Perth. Expect 13 rainy days, so pack a light rain layer for flexibility. Average temperatures of 17°C make outdoor exploration comfortable during the dry periods. With 8 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.
The average high temperature in Perth in July is 17°C (63°F), and the average low is 9°C (48°F). The mean daily temperature is approximately 13°C (55°F). The day-to-night range of 8°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Perth is generally January. January offers the most sunshine at 13 hours per day and only 2 rainy days. Average temperatures reach 31°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around January gives you the best chance of dry, bright weather.
July is shoulder or low season in Perth, meaning fewer tourists and generally lower prices than peak months. With 8 sunshine hours and 13 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In July, Perth suits a range of activities thanks to cool conditions around 17°C. Mix of indoor and outdoor activities works well given the moderate chance of rain. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 8 hours of sunshine, parks and waterfront walks are particularly enjoyable.

July ranks 12th sunniest of the year in Perth, with an average 8 daily sunshine hours. The driest months are January, February, and March. January is the hottest month (31°C avg high); July is the coolest (17°C). From here, temperatures fall 0°C into August. Compared to last month (June: 18°C high, 11 rain days), July is cooler and wetter. July is one of the least sunny months, but that often means lower prices and fewer fellow tourists.

Year-Round Climate

MonthHighLowRain DaysSunDetails
January31°C19°C213hView
February31°C19°C212hView
March29°C18°C211hView
April25°C15°C410hView
May21°C12°C99hView
June18°C10°C118hView
July17°C9°C138hView
August17°C10°C119hView
September19°C11°C910hView
October22°C13°C511hView
November26°C15°C412hView
December29°C17°C213hView

Other Months in Perth

JanFebMarAprMayJunJulAugSepOctNovDec

Plan Your Trip to Perth

Best Time to Visit Perth

Data Sources for Perth

Perth on WikipediaOpen-Meteo Climate APINOAA National CentersUK Met OfficeWMOGeoNames

Climate normals represent 30-year averages (1991-2020). Individual years may vary.