Weather in Australia, Seasons and Climates

Australian Seasons

The seasons in Australia are opposite to ours in the U.S. That means when it’s the winter season here in the U.S., it’s summer season in Australia.

Here are Australia’s seasons by month:

Spring: September – November
Summer: December – February
Autumn: March – May
Winter: June – August

The best seasons to travel to Australia (nicest weather) are in either Spring or Autumn. Check the average weather tables below for more details on the weather for each city so you can plan your trip.

Quick summary: Sydney enjoys a temperate climate year-round, making it a welcoming destination in any season. Summer months (December through February) bring warm highs around 79°F with roughly 20 sunny days per month, while the mild winters (June–August) still offer comfortable daytime temperatures in the low-to-mid 60s°F, and more sunshine hours per day than summer. Rainfall is fairly consistent throughout the year, with June typically the wettest month and July and September the driest.

Quick summary: Melbourne is known for its famously changeable weather, but don’t let that deter you. Summers (December through February) are warm and sunny, with highs around 79–81°F and up to 22 sunny days per month and 8–9 daily sunshine hours. Winters are cooler, with July lows dipping to 41°F, but rainfall stays remarkably low and consistent year-round, rarely exceeding 60mm in any given month. Spring and autumn offer a sweet spot of mild temperatures, comfortable rainfall, and plenty of sunshine.

Quick summary: Brisbane is one of Australia’s sunniest major cities. Temperatures are warm to hot from November through March, with highs reaching 84°F, while the June–August winter months deliver near-perfect conditions: sunny days in the low 70s°F with lows only dropping to around 50°F. The trade-off is rainfall: January and February are the wettest months, with over 150mm each, though the city still manages 14–18 sunny days even during those periods. From May through September, Brisbane is reliably dry and brilliant, making it an ideal base for a Queensland itinerary.

Quick summary: Cairns operates on two distinct seasons rather than four. The Wet Season (November through April) brings dramatic tropical rainfall — January and February average over 400mm each — along with warm, humid temperatures in the high 80s°F. During the Dry Season (May through October), rainfall drops to near zero, sunshine hours climb to 8–9 per day, and temperatures settle into a comfortable 79–84°F range with up to 23 sunny days per month. For most travelers, the Dry Season is the best time for visiting Cairns and the Great Barrier Reef.

Quick summary: The Great Barrier Reef enjoys warm, swimmable conditions virtually year-round, with water temperatures ranging from a low of 72°F in July and August to a high of 84°F in the peak summer months. Air temperatures follow a similar pattern, staying above 78°F even in the cooler winter months of June and July. Like Cairns, the Reef experiences a pronounced wet season from November through April, with January–March seeing the heaviest rainfall. The ideal window for reef visits is May through October, when rainfall drops dramatically, sunny days peak at 21–23 per month, and the calm, clear conditions make for exceptional snorkeling and diving.

Quick summary: Uluru (Ayers Rock) sits in the heart of the Australian Outback, and its climate reflects that with extreme, dramatic, and unlike anywhere else in the country. Summer temperatures (December through February) regularly top 97–100°F, making outdoor exploration challenging during the heat of the day. Winter, by contrast, is mild and arguably the best time to visit, with July highs around 68°F and cool nights that can dip to 37°F, so layers are essential. What remains consistent year-round is sunshine: Uluru averages an extraordinary 26–28 sunny days per month, with very little rainfall at any time of year.

Quick summary: Perth lays claim to being one of the sunniest cities on earth. January and February deliver an average of 12 sunshine hours per day and up to 28 sunny days per month, with temperatures peaking around 90°F. Perth’s climate is Mediterranean in character: hot, dry summers from November through March, and a cooler, wetter winter season concentrated in June and July (when rainfall peaks at around 162–171mm). By September, the rains taper off, temperatures rebound, and the city transitions into a spectacular spring. For travelers who prefer warmth and maximum sunshine, the shoulder months of October–November and March–April offer the best of both worlds.

Quick summary: Canberra experiences four distinct seasons more dramatically than most Australian cities. Summers are warm and bright, with January and February highs reaching 82°F and up to 9 daily sunshine hours. Autumn (March–May) brings mild temperatures and some of the most beautiful foliage in Australia. Winters are genuinely cold by Australian standards, with July lows dropping to 32°F and daytime highs barely reaching 52°F, but the city still averages 21 sunny days that month. Spring sees a rapid warming, and October is particularly beautiful, with Canberra’s famous gardens and parks in full bloom. Rainfall is moderate and fairly evenly spread throughout the year.

Quick summary: Adelaide enjoys one of Australia’s most appealing Mediterranean-style climates, with long, warm summers and mild, manageable winters. Summer highs reach 82°F in January and February, accompanied by 10 daily sunshine hours and up to 26 sunny days per month with very little rain, with January averaging just 18mm. Rainfall increases through the cooler months, peaking in July at 63mm, but temperatures remain comfortable at around 59°F and the city continues to offer 15 sunny days even in the heart of winter. The Barossa and McLaren Vale wine regions that surround Adelaide benefit from this same predictable, sun-drenched rhythm, making the city an ideal base for food and wine exploration in virtually any season.

Quick summary: Hobart, Tasmania’s compact capital, has a cool-temperate climate that feels a world apart from mainland Australia. Summer (December through February) is mild and pleasant, with highs around 70–72°F, long evenings, and up to 22 sunny days per month. Winters are cold and moody, with July lows touching 39°F and daylight sunshine hours dropping to just 4–5 per day. Rainfall is relatively low and consistent year-round, and the shoulder seasons of autumn and spring offer particularly pleasant conditions for exploring the city.

Quick summary: Darwin operates on a two-season tropical rhythm: the Wet and the Dry, with almost nothing in between. Temperatures barely budge all year, hovering between 86–91°F nearly every month, but the difference in rainfall is staggering. The Wet Season (November through April) sees Darwin deluged, with January averaging a remarkable 426mm of rain, frequent thunderstorms, and high humidity. During the Dry Season (May through October), rainfall drops to near zero, sunshine hours peak at 10 per day, and the city averages 28–30 sunny days per month. For most international visitors, the Dry Season is the only practical time to explore Darwin and the Northern Territory.

Source: Australian Bureau of Meteorology (BoM) – Australian Climate Averages