Perth has two main tourist seasons that each appeal to different travelers. The summer months from November to March offer hot, sunny beach weather with temperatures of 29 to 31degC (84 to 88degF) and virtually no rain. The spring months of September and October bring wildflowers, comfortable 20 to 23degC (68 to 73degF) temperatures, and fewer crowds at major attractions. Winter from June to August is mild by European standards at 18degC (64degF) but sees significant rainfall. This guide breaks down the best times to visit Perth based on weather, prices, crowds, and events. For more detailed information, see our guides to Perth weather by month, Perth events and festivals, and where to stay in Perth.
Best Time to Visit Perth for Best Weather
The best weather in Perth runs from November through March, when daytime highs range from 26 to 31degC (79 to 88degF) and rainfall is under 25mm per month. Sea temperatures reach 21 to 22degC (70 to 72degF), comfortable for swimming. However, December through February can see heatwaves of 40degC+ (104degF+) for several consecutive days, driven by easterly desert winds. The Fremantle Doctor sea breeze provides afternoon relief on most summer days. If you prefer warm but not scorching weather, target November or late March when highs are 26 to 29degC (79 to 84degF).
Best Time to Visit Perth for Smallest Crowds
The quietest months for tourism are May, August, and September. Hotel occupancy drops to 60 to 65% compared to 85%+ in January. You’ll find shorter queues at Rottnest Island ferries, Kings Park parking, and Swan Valley wineries. The trade-off is cooler weather (18 to 22degC) and higher chance of rain in May and August. September offers the best balance of low crowds and improving weather, with wildflowers blooming across Kings Park and the Perth Hills. Avoid Australian school holidays (late December through January, and the two weeks around Easter) when Perth families travel within WA and accommodation prices spike.
Best Time to Visit Perth for Lowest Prices
Accommodation prices in Perth drop 20 to 35% between May and August compared to summer peaks. A 4-star CBD hotel that costs AUD 280 per night in January can drop to AUD 180 in July. Flights from Southeast Asia (Bali, Singapore, Kuala Lumpur) are cheapest in February and October, with round-trip fares from AUD 300. Domestic flights from Sydney and Melbourne are most expensive during December school holidays (AUD 600 to 800 return) and cheapest in August (AUD 350 to 450 return). The Perth Royal Show in late September pushes hotel prices up for one week, so book early if visiting then.
Best Time to Visit Perth: Season-by-Season Summary
Summer (December to February): Best for beaches and outdoor festivals. Average high 31degC. Virtually no rain. Busy and expensive. The Fremantle Doctor sea breeze keeps afternoons bearable. Australia Day fireworks on January 26 draw 300,000 people to the Swan River foreshore.
Autumn (March to May): March still feels like summer (29degC). April cools to 26degC with first significant rain. May brings 12 rainy days and 22degC highs. Good for walking tours and wine tasting without summer crowds. Swan Valley harvest season runs March to April.
Winter (June to August): Mild days at 18 to 19degC but cold nights at 8 to 9degC. Wettest season with 135 to 177mm monthly rainfall. Best for indoor attractions like the WA Museum Boola Bardip and Perth Mint. Whale watching season begins in August as humpbacks migrate north.
Spring (September to November): The ideal season for most visitors. September averages 20degC with 81mm rain, wildflowers at peak. October warms to 23degC with 52mm rain. November reaches 26degC with just 22mm rain. Kings Park Festival in September draws 200,000 visitors. Perfect for outdoor activities, hiking, and Rottnest Island day trips.
Best Time to Visit Perth: Months to Avoid and Why
June and July are the least appealing months for most travelers. These are the coldest and wettest months with average highs of 18 to 19degC, overnight lows of 8 to 9degC, and 14 to 15 rainy days each. Sea temperatures drop to 17 to 18degC, too cold for swimming without a wetsuit. Many outdoor cafes and beach facilities reduce hours. If you visit in winter, focus on the Swan Valley wine region, museums, and indoor attractions. Restaurant and pub scenes remain active year-round in Northbridge and Fremantle.
