Nestled in Western Australia, Perth boasts a Mediterranean climate that offers diverse weather experiences throughout the year. The city, which lies in the Southern Hemisphere, experiences reversed seasons compared to Europe and North America.
The hottest month is February, with average highs reaching 86°F and lows around 65°F.
On the opposite end, July brings cooler temperatures, averaging highs of 63°F and lows near 48°F.
Perth stands out with its hot, dry summers and mild, wet winters. Most of the city’s rainfall occurs between May and September, peaking in July. This makes it similar to cities like Melbourne and Sydney, though with less humidity.
For travelers and residents, understanding Perth’s climate patterns is crucial for planning outdoor activities and vacations.
With plenty of sunshine and moderate temperatures year-round, Perth is an inviting destination for those seeking varied weather conditions.
Perth shares similarities with other Australian cities like Brisbane and Cairns in terms of diverse weather conditions while maintaining its unique Mediterranean charm.
Here’s a quick look at the climate data by month to help you plan:
| Month | Average High (°F) | Average Low (°F) | Average Rainfall (Inches) |
|---|---|---|---|
| January | 84 | 64 | 0.31 |
| February | 86 | 65 | 0.39 |
| March | 81 | 62 | 0.71 |
| April | 76 | 57 | 1.02 |
| May | 68 | 52 | 3.15 |
| June | 65 | 49 | 5.11 |
| July | 63 | 48 | 5.51 |
| August | 64 | 48 | 4.33 |
| September | 68 | 50 | 2.39 |
| October | 72 | 54 | 1.18 |
| November | 78 | 58 | 0.71 |
| December | 81 | 62 | 0.31 |
Average Temperature in Perth, Australia
Perth has a Mediterranean climate with mild winters and hot summers. The average temperatures vary throughout the year.
The hottest month is February. During this peak heat, the average high temperature is 86°F, while the average low is 65°F.
In contrast, July is the coldest month. The average high temperature in July is 63°F, and the average low is 48°F.
Monthly Average Temperatures
| Month | Average High (°F) | Average Low (°F) |
|---|---|---|
| January | 85 | 64 |
| February | 86 | 65 |
| March | 82 | 62 |
| April | 76 | 56 |
| May | 70 | 51 |
| June | 64 | 48 |
| July | 63 | 48 |
| August | 65 | 49 |
| September | 70 | 53 |
| October | 74 | 56 |
| November | 80 | 60 |
| December | 83 | 63 |
Winters in Perth are generally mild. From June to August, average high temperatures range from 62.4°F to 64.6°F.
Days are cooler but not usually freezing, making it comfortable.
Summers can be sweltering. The months from December to February often see temperatures above 80°F. These are ideal for enjoying Perth’s outdoor activities.
Average Precipitation in Perth, Australia
Perth has a Mediterranean climate featuring distinct wet and dry seasons. This results in most precipitation occurring in specific months, with varying amounts of rainfall. Let’s explore the details of rainfall and snow in Perth.
Average Rainfall in Perth, Australia
Perth experiences the majority of its rainfall during the winter months from May to September. The wettest month is July, with an average of 4.4 inches of rain.
During this time, there are typically 9-10 rainy days each month.
Here’s a breakdown of average monthly rainfall:
| Month | Rainfall (inches) |
|---|---|
| January | 0.3 |
| February | 0.1 |
| March | 0.4 |
| April | 1.2 |
| May | 2.9 |
| June | 4.1 |
| July | 4.4 |
| August | 3.6 |
| September | 2.4 |
| October | 1.4 |
| November | 0.5 |
| December | 0.3 |
The dry season spans October to April, where rainfall is minimal, sometimes less than 0.5 inches monthly.
January and February, for example, can see as little as 0.1 inches of rain.
Average Snow in Perth, Australia
Snowfall in Perth is extremely rare due to its mild winter temperatures. The coldest month, July, averages lows of 48°F, which is not conducive to snow formation.
Even during the coldest spells, the temperature seldom dips low enough for snow and ice to form, rendering snowfall nearly non-existent.
Hence, residents and visitors should not expect snow in Perth, but may experience occasional cooler, wet winter days.
This temperature consistency makes Perth’s winters primarily characterized by rain rather than snow and ice.
The combination of these factors results in a more predictable and manageable winter climate for the region.
Average Sun in Perth, Australia
Perth enjoys a substantial amount of sunshine throughout the year, making it an ideal destination for those who love sunny days. The city has varied daylight hours and solar energy patterns across different months.
Average Daily Shortwave Solar Energy in Perth, Australia
The average daily shortwave solar energy in Perth varies significantly depending on the time of year. This energy refers to the amount of solar power reaching the surface of the earth.
| Month | Average Daily Solar Energy (kWh/m²) |
|---|---|
| January | 7.5 |
| February | 7.0 |
| March | 6.3 |
| April | 4.9 |
| May | 3.3 |
| June | 2.8 |
| July | 3.2 |
| August | 4.4 |
| September | 5.9 |
| October | 7.1 |
| November | 7.6 |
| December | 7.9 |
In January, Perth receives around 7.5 kWh/m² of solar energy daily, while in June, the shortest day offers around 2.8 kWh/m².
Bright, sunny days dominate the summer months, increasing the average day length and sunshine hours.
During winter, the hours of sunshine decrease, impacting the amount of daylight available. Despite this, Perth remains relatively sunny, even during its cooler months.
Average Humidity in Perth, Australia
Perth experiences varying humidity levels throughout the year.
In summer, the relative humidity is generally lower, creating a more comfortable atmosphere.
This is because the higher temperatures increase the ability of the air to hold moisture, thus reducing the relative humidity.
Monthly Average Humidity:
| Month | Morning Humidity (%) | Afternoon Humidity (%) |
|---|---|---|
| January | 56 | 35 |
| February | 61 | 38 |
| March | 67 | 43 |
| April | 73 | 50 |
| May | 79 | 54 |
| June | 81 | 55 |
| July | 82 | 57 |
| August | 79 | 55 |
| September | 72 | 50 |
| October | 64 | 44 |
| November | 58 | 39 |
| December | 55 | 36 |
The highest levels of humidity occur in winter, particularly in the mornings when the temperature is lower.
July registers the highest morning humidity.
Dew point is also a factor in the perceived humidity.
In Perth, the dew point is relatively low, indicating drier air.
During summer, the dew point averages around 59°F.
By contrast, in winter, the dew point is closer to 50°F, making the air feel more humid.
Occasionally, the city can experience muggy conditions, particularly after rain, but these periods are generally short-lived.
The breeze from the coast often keeps the dew point lower, ensuring more comfortable conditions for most of the year.
For detailed climate data, visit the Weather and Climate in Perth.
Average Wind in Perth, Australia
Perth experiences varying wind speeds throughout the year.
The windiest month is often July, during which the city sees frequent strong gusts.
Monthly Average Wind Speeds (mph):
| Month | Wind Speed |
|---|---|
| January | 9 mph |
| February | 8 mph |
| March | 8 mph |
| April | 7 mph |
| May | 8 mph |
| June | 9 mph |
| July | 10 mph |
| August | 9 mph |
| September | 8 mph |
| October | 8 mph |
| November | 9 mph |
| December | 9 mph |
The summer months see lower wind speeds, making it less windy in comparison to the winter months.
June, July, and August are the months with the highest average wind speeds.
During these months, the wind can be quite strong, especially in the afternoons.
Perth’s location near the coast contributes to its frequent windy conditions.
The sea breeze from the Indian Ocean brings cool air, especially during the hot summer months.
Wind patterns can be crucial for planning outdoor activities.
For instance, wind surfers and sailors might prefer the windier months for better conditions.
For more details about wind patterns and how they impact the region, see wind articles.
The wind, while sometimes strong, plays a role in moderating Perth’s temperatures, especially during the summer.
Average Air Quality in Perth, Australia
Perth generally enjoys good air quality, thanks to its coastal location and favorable weather conditions.
Primary Pollutants:
- PM2.5: Fine particulate matter can come from vehicle emissions and industrial activities.
- Ozone: Forms on hot, sunny days and can trigger respiratory issues.
Air Quality Index (AQI):
- Good (0-50): Air quality is satisfactory, posing little or no risk.
- Moderate (51-100): Acceptable air quality, though some pollutants may affect sensitive individuals.
- Unhealthy for Sensitive Groups (101-150): Increased risk for people with respiratory or heart conditions.
Monthly Air Quality Data:
| Month | Average AQI | PM2.5 (µg/m³) | Ozone (ppb) |
|---|---|---|---|
| January | 45 | 7.0 | 25 |
| February | 48 | 7.5 | 28 |
| March | 50 | 8.0 | 30 |
| April | 52 | 8.2 | 32 |
| May | 55 | 9.0 | 35 |
| June | 58 | 9.5 | 38 |
| July | 56 | 9.3 | 36 |
| August | 54 | 8.8 | 34 |
| September | 50 | 8.0 | 30 |
| October | 47 | 7.2 | 28 |
| November | 44 | 7.0 | 26 |
| December | 45 | 7.0 | 25 |
Factors Influencing Air Quality:
- Sea Temperature: Cooler sea temperatures can help disperse urban pollution.
- Clear Skies: More sunlight can increase ozone levels.
- Pressure Systems: High pressure can trap pollutants near the ground, reducing air quality.
- Water Temperature: Generally affects coastal ecosystems but less directly impactful on air quality.
Perth’s air quality is typically good, with short periods of moderate pollution.
Residents enjoy a clean, healthy environment with occasional days requiring caution for sensitive groups.
Topography of Perth, Australia
Perth is located on the west coast of Australia, along the Swan River. The city lies between the Indian Ocean to the west and the Darling Scarp to the east. This geographic position gives it a unique blend of coastal and inland landscapes.
The Swan Coastal Plain stretches out from the coast, providing a flat terrain. This area is made up of sandy soils and is home to various wetlands and swamps.
To the east, the Darling Scarp provides a notable contrast with its steep, hilly landscapes.
These hills rise sharply and offer scenic views of the city and surrounding areas. The scarp forms part of the larger Darling Range, a significant geological feature of the region.
The northern parts of Perth include dense urban areas that gradually merge into natural bushland and park areas.
Here, the landscape can be rugged with rocky outcrops and native vegetation.
To the south, Perth extends into sprawling suburbs and agricultural areas. The land here is generally flatter and more suitable for farming activities.
An interesting feature of Perth’s topography is its extensive coastline.
Miles of sandy beaches line the western coast, providing recreational opportunities and contributing to Perth’s popularity as a beach destination.
Extreme Weather Events that Occur in Perth, Australia
Perth, Australia experiences various extreme weather events throughout the year. These include intense heat waves, thunderstorms, and heavy rainfall, which have notable effects on the city and its residents.
Heat Waves
Heat waves in Perth can be extreme, with temperatures rising significantly.
According to a recent report, heat-related deaths in Perth have increased due to more frequent and intense heat waves.
These events are becoming more common, with temperatures often reaching 104°F (40°C) or higher.
Thunderstorms
Thunderstorms are another common extreme weather event in Perth.
During summer months, thunderstorms can bring heavy rain and strong winds.
These storms are often accompanied by lightning, which can lead to power outages and hazardous conditions.
| Month | Average High (°F) | Average Rainfall (Inches) |
|---|---|---|
| January | 88°F | 0.3″ |
| February | 89°F | 0.3″ |
| March | 84°F | 0.9″ |
| April | 77°F | 1.6″ |
Flooding
Heavy rainfall, especially during thunderstorms, can lead to flooding in certain areas of Perth.
The Swan River is particularly prone to flooding during extreme weather conditions.
More information on flooding threats can be found in this detailed article about Swan River flooding.
Wildfires
Summer months also bring an increased risk of wildfires.
High temperatures and dry conditions make the surrounding bushland susceptible to fires, which can spread rapidly and cause significant damage.
Increased Temperature Trends
The Bureau of Meteorology has noted a rise in temperatures across Australia, including Perth. Since 1910, the surface temperatures have increased by an average of 2.65°F (1.47°C).
This trend contributes to the severity and frequency of extreme weather events.
For more details on the impacts of climate events in Australia, check this analysis on last year’s top climatic events.
Best Time of the Year to Visit Perth, Australia
Perth, Australia boasts a Mediterranean climate with warm summers and mild winters.
Each season offers unique experiences and weather conditions, making certain times of the year particularly appealing for different activities.
What is Perth, Australia Like in Spring
Spring in Perth, from September to November, is considered the best time to visit.
The weather is mild and pleasant, with average highs around 72°F (22°C) and low rainfall.
This season is perfect for outdoor activities such as hiking and paddleboarding.
The region’s famous wildflowers bloom during this time, creating picturesque landscapes. Kings Park and other nature reserves become vibrant with colors, attracting many visitors.
Events and festivals also occur frequently in spring, adding more to the tourist experience.
What is Perth, Australia Like in Summer
Perth’s summer, running from December to February, is hot and dry.
Average highs can reach up to 88°F (31°C) with minimal rainfall.
This season is perfect for beachgoers and outdoor enthusiasts.
While it might be too hot for some, the beaches and coastal activities are phenomenal. Popular spots like Cottesloe Beach and Fremantle are bustling.
The city also enjoys some of the longest hours of sunshine, making it ideal for long days spent outdoors.
| Month | Average High (°F) | Average Low (°F) | Rainfall (inches) |
|---|---|---|---|
| December | 82 | 61 | 0.3 |
| January | 88 | 65 | 0.2 |
| February | 88 | 66 | 0.2 |
What is Perth, Australia Like in Fall
Fall in Perth, from March to May, is another great time to visit due to its pleasant weather.
Temperatures range between 66°F (19°C) and 77°F (25°C), making it comfortable for sightseeing and outdoor activities.
Autumn is marked by fewer crowds compared to summer, allowing a more relaxing experience.
The season’s mild temperatures are ideal for visiting wineries in the nearby Swan Valley.
Outdoor events and festivals continue to occur, adding to the appeal.
What is Perth, Australia Like in Winter
Winter in Perth, from June to August, is mild and wet. While temperatures can drop to an average low of 47°F (8°C) and highs around 64°F (18°C), it remains relatively moderate compared to other regions.
Rainfall is more frequent, so packing an umbrella is wise.
Despite the rain, winter is still a good time for indoor activities. Museums, galleries, and restaurants offer plenty of entertainment options.
It’s also prime time for whale watching off the coast, making it a unique experience for those visiting during these months.
| Month | Average High (°F) | Average Low (°F) | Rainfall (inches) |
|---|---|---|---|
| June | 64 | 48 | 5.3 |
| July | 62 | 47 | 6.0 |
| August | 65 | 48 | 4.2 |
By understanding the weather and attractions each season in Perth offers, visitors can plan the perfect trip to this sunny Australian city.