Perth, the sunniest capital city in Australia, enjoys a Mediterranean climate with hot, dry summers and mild, wet winters. The city boasts over 3,200 hours of sunshine annually, making it ideal for outdoor activities. Seasonal changes bring vibrant springs, long warm autumns, and a lush green landscape during the winter rain season.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Perth’s climate is defined by hot, dry summers (December–February) and mild, wet winters (June–August). Summer days are long and sunny, with average highs of 30–32°C and lows of 17–19°C. Rain is rare, humidity is low, and the famous ‘Fremantle Doctor’ sea breeze offers afternoon relief, though heatwaves above 38°C can occur. The UV index is extreme, so sun protection is essential. Nights are cooler than in many other Australian cities, and coastal suburbs are typically milder due to the sea breeze.
Winters are mild and rainy, with average highs of 17–19°C and lows of 8–10°C. Most of Perth’s annual rainfall (over 700 mm) falls between May and September, often as heavy downpours and thunderstorms interspersed with sunny days. Frost is rare, and snow has never been recorded in the city. Spring (September–November) and autumn (March–May) are transitional, with warm, sunny days and cooler nights. Spring brings blooming wildflowers and is a favourite for hiking and outdoor festivals, while autumn is ideal for exploring parks and enjoying the last of the beach weather. Winds are generally moderate, with the strongest breezes in summer and spring.
| Average climate data for Perth, Australia | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 31 | 32 | 30 | 26 | 22 | 19 | 18 | 19 | 20 | 23 | 27 | 29 | 32 |
| Average minimum temperature (°C) | 18 | 18 | 17 | 14 | 11 | 9 | 8 | 8 | 10 | 12 | 14 | 16 | 8 |
| Average precipitation (mm) | 15 | 9 | 20 | 37 | 91 | 128 | 147 | 122 | 89 | 39 | 23 | 10 | 730 |
| Average rainfall days (days) | 2 | 2 | 4 | 7 | 11 | 15 | 17 | 16 | 15 | 9 | 6 | 4 | 109 |
| Average relative humidity (%) | 39 | 38 | 40 | 46 | 49 | 56 | 56 | 55 | 54 | 46 | 44 | 42 | 47 |
| Average water temperature (°C) | 22 | 23 | 23 | 23 | 22 | 21 | 20 | 20 | 19 | 19 | 20 | 21 | 21 |
| Average daily daylight hours (h) | 14 | 13 | 12 | 11 | 10 | 10 | 10 | 11 | 11 | 12 | 13 | 14 | 12 |
| Average daily sunshine hours (h) | 11 | 11 | 9 | 8 | 6 | 5 | 6 | 7 | 7 | 9 | 10 | 11 | 8 |
| Average UV index | 12 | 11 | 9 | 6 | 4 | 3 | 3 | 4 | 6 | 8 | 10 | 12 | 7 |
The best time to visit Perth is during spring (September–November) and autumn (March–May). These seasons offer warm, sunny days (20–28°C), low humidity, little rain, and vibrant outdoor events. Spring is especially beautiful with wildflowers in bloom, while autumn provides ideal conditions for beach trips, hiking, and city exploration.
The least favourable time is during winter (June–August), when rain is frequent, days are shorter, and temperatures are cooler (8–19°C). While the city remains mild compared to many places, outdoor activities can be disrupted by downpours and storms. It’s also the low season for tourism, with fewer events and beach days.
Perth’s annual average temperature ranges from 8–10°C in winter to 30–32°C in summer. February is usually the hottest month, while July is the coldest.
Perth receives about 700–730 mm of rain annually, with most falling from May to September. Snow has never been recorded in the city, though rare light snowfalls have occurred in the surrounding hills.
Perth enjoys over 3,200 hours of sunshine per year, making it Australia’s sunniest capital. Summer months have up to 11 hours of sunshine daily, while winter averages 5–6 hours.
Spring (September–November) and autumn (March–May) are best for outdoor activities, with warm, sunny days, little rain, and comfortable temperatures. Summer is great for the beach, but can be very hot.
Perth is not a winter sports destination. Winters are mild and wet, with no snow in the city. For skiing or snowboarding, travel to Australia’s eastern states.
Swimming outdoors is best from November to May, when sea temperatures reach 21–23°C and air temperatures are warm. Summer is the peak beach season.
Pack light, breathable clothing, sun protection, and a hat for summer. Bring layers and a rain jacket for spring and autumn. In winter, a warm jacket and waterproof shoes are recommended.
The warmest month, with the highest average maximum temperature, is February (31.7 °C). The month with the lowest average maximum temperature is July (18.4 °C). Overall, the average maximum temperature over the whole year is 24.8 °C.
The month with the highest average minimum temperature is February (18.5 °C). The coldest month, with the lowest average minimum temperature, is July (7.6 °C). Overall, the average minimum temperature over the whole year is 12.8 °C.
The month with the highest average water temperature is March (23.4 °C). The month with the lowest average water temperature is October (18.9 °C). Overall, the average water temperature over the whole year is 21.1 °C.
The wettest month, with the highest amount of precipitation, is July (146.8 mm). The driest month, with the least amount of precipitation, is February (8.8 mm). Over the whole year there are 730.2 mm of rainfall on average.
The month with the most days of rain is July (16.9 days). The month with the fewest days of rain is February (2 days). Over the whole year there are 108.7 days of rain on average.
The month with the highest average relative humidity is July (56.3 %). The month with the lowest average relative humidity is February (37.7 %). The overall average relative humidity over the whole year is 47.2 %.
The month with the longest days, so the most daylight, is December (Average daylight: 14 h). The month with the shortest days, so the least daylight, is June (Average daylight: 10 h). Over the whole year there are 11.8 h of daylight per day on average.
The month with the most sunshine per day is February (Average sunshine: 11 h). The month with the least sunshine per day is June (Average sunshine: 5 h). Over the whole year there are 8.3 h of sunlight per day on average.
The months with the highest average UV index are January and December (UV index: 12). The months with the lowest average UV index are June and July (UV index: 3). Over the whole year the average UV index is 7.3.
