Weather in Perth

Planning to spend time in Perth? Find the latest weather information in this section. Here you will find up-to-date data, forecasts, and useful charts to help plan your trip around Australia.

Perth, located on the south-west coast of Australia, boasts a Mediterranean climate. This means you can expect hot, dry summer months and mild, wetter winters. Such a climate makes Perth an attractive destination to visit almost all year round, offering diverse weather conditions for various types of recreation.

Summer in Perth, which falls between December and February, is characterized by high temperatures, often exceeding 30°C, and plenty of sunny days with minimal rainfall. Winter, from June to August, brings cooler weather with average temperatures around 14-15°C and the highest rainfall of the year, although it remains moderate. Spring (September-November) and autumn (March-May) are pleasant transitional seasons with comfortable temperatures and less rain than in winter.

One of the characteristic features of Perth's climate is the significant amount of sunshine hours throughout the year, especially during the summer period. In winter, despite increased cloudiness and precipitation, days often remain quite bright. Overall, the weather in Perth is predictable, allowing tourists to easily plan their trips and outdoor activities.

Perth experiences distinct temperature changes throughout the year, typical of its Mediterranean climate. The hottest months are January and February, when the average temperature hovers around 24.6-24.9°C, and daily highs regularly soar past the 30°C mark. The coolest period falls in July and August, with an average temperature of about 13.8°C; during these months, night-time temperatures can drop to an average of 10.2-10.6°C, creating a pleasantly fresh feeling.

The summer months in Perth, from December to February, bring truly warm, sunny weather. During the day, the thermometer often rises to 29-30.5°C, and sometimes higher, which is ideal for beach holidays and various outdoor activities. Nights bring pleasant relief from the daytime heat, with temperatures dropping to an average of 18-19.5°C. Given the minimal rainfall during this period, the summer heat in Perth is predominantly dry, making it more comfortable for many.

Winter in Perth, covering June, July, and August, is characterized by mild and cool weather. Average daytime temperatures fluctuate in the range of 17-18°C, which is quite comfortable for walking and sightseeing. Nights become noticeably colder, with temperatures around 10-11°C, so warm clothes will not go amiss for evening outings. An important feature of Perth's climate is the noticeable diurnal temperature range, especially in the summer months, where the difference between the daily maximum and nightly minimum can reach 10-12°C. In winter, these fluctuations smooth out somewhat, amounting to about 6.5-7°C, but are still perceptible. The transitional seasons – spring (September-November) and autumn (March-May) – offer very pleasant temperatures, gradually rising towards summer or falling towards winter, with moderate daily variations.

Perth sees a clearly defined seasonality in rainfall distribution, which fully corresponds to its Mediterranean climate. Summer months are generally very dry, while winter brings the majority of annual precipitation, although the total amount remains low.

The driest period in Perth falls during the Australian summer, from December to February. In February and December, according to statistical averages, the total rainfall is 0 mm, and in January – just 1 mm. The number of rainy days in these months is also minimal: in January there is on average only 1 day with precipitation, in December – 2 days, and in February – 3 days. This makes summer the ideal time for those looking for predominantly sunny and dry weather for their holiday.

The winter months, from June to August, are the "wettest" of the year for Perth if judged by rain frequency, although the rainfall volumes themselves are not large. July stands out as the month with the highest number of rainy days – on average there are 15, with about 4 mm of precipitation falling. This means that in the middle of winter, rains can occur quite often, roughly every other day, but most likely they are light or short-lived. In June and August, 3 mm of precipitation falls, with rainy days numbering 10 and 11 respectively.

The transitional seasons – spring (September-November) and autumn (March-May) – show a gradual change in the precipitation pattern. In autumn, starting from March (1 mm of rain, 4 rainy days), the amount of precipitation and the number of rainy days smoothly increases towards May (2 mm of rain, 7 rainy days). In spring, the reverse trend is observed: after a wetter winter, the amount of precipitation and rain frequency decrease from September (1 mm, 8 rainy days) to November (1 mm, 4 rainy days), preparing the city for the arrival of the dry summer period.

When planning a trip to Perth, it is important to consider its Mediterranean climate with hot dry summers and mild, wetter winters. Regardless of the time of year, your suitcase must include sunscreen with high SPF, sunglasses, and a hat for protection against the active Australian sun. Comfortable walking shoes will also become your faithful companion, as Perth and its surroundings are perfect for long walks.

For the summer months (December-February), when temperatures often rise above 30°C and rainfall is practically non-existent, choose light, breathable clothing made from natural fabrics such as cotton or linen, as well as swimwear and sandals. In spring (September-November) and autumn (March-May), the weather is very comfortable, but evenings can be cooler, so the layering principle will be very handy – bring a light cardigan, fleece, or windbreaker. During these periods, do not forget about sun protection, as days are predominantly clear, and the UV index can be high.

In winter (June-August), Perth becomes cooler, with average temperatures around 13-15°C, and the likelihood of precipitation increases. Although rains are usually not heavy, they can be quite frequent, especially in July. Therefore, at this time of year, you will need warmer clothes: sweaters, jeans or trousers, closed shoes, and a light waterproof and windproof jacket or a compact umbrella. Layering your clothing will help you easily adapt to temperature changes throughout the day, from cool mornings and evenings to a warmer afternoon if the sun comes out.