Best Time to Visit Rottnest Island

Plan your Rottnest Island trip by season: Spring, summer, winter travel guide

Rottnest Island (Wadjemup) offers great experiences in every season, but the best time to visit Rottnest Island depends on your ideal blend of weather, activities, and atmosphere. Thanks to its Mediterranean climate–think warm, dry summers and mild, wetter winters–plus the moderating Leeuwin Current, Rottnest is a year-round destination.

This guide breaks down weather patterns, seasonal highlights, crowd levels, key events, and travel tips, helping you choose the perfect time for your adventure on Rottnest Island.

Rottnest Island weather & climate at a glance

Rottnest Island enjoys a mild, ocean-influenced climate. Summers (December–February) are warm and sunny, with average highs of 25–30°C, while winters (June–August) are cooler and wetter, with highs around 17–19°C.

Most rainfall occurs from May to August, which accounts for roughly 75% of the annual total. Sunshine is abundant year-round–even in winter, the island sees many bright days.

The Leeuwin Current keeps water temperatures milder than the mainland: expect 19°C in winter, rising to 23°C in summer.

A season-by-season guide to visiting Rottnest Island

Rottnest Island’s seasons align with both the Western calendar and the six Noongar seasons, reflecting the deep cultural connection of the Whadjuk Noongar people to Wadjemup.

Tourist riding a Segway along a scenic path on Rottnest Island, Australia.

Weather: Mild, sunny, highs 21–25°C, occasional showers.
Crowds: Moderate, increasing toward November.
Activities: Wildflower walks, cycling, snorkeling as the waters warm.
Wildlife: Quokka joeys emerge, migratory birds arrive, wildflowers bloom.
Pros: Vibrant landscapes, comfortable weather, active wildlife.
Cons: Some showers, evenings can be cool.

Tourists snorkeling in clear blue water at Rottnest Island on a Fremantle day trip.

Weather: Hot, dry, highs 27–30°C (can reach 40°C in heatwaves), minimal rain.
Crowds: Peak season, especially during school holidays and events.
Activities: Swimming, snorkeling, boating, festivals, and outdoor dining.
Wildlife: Reptiles are active, marine life is abundant, and salt lakes are vibrant.
Pros: Best beach weather, long days, lively atmosphere, warm water.
Cons: Can be crowded, limited accommodation availability, risk of sunburn.

Tourists enjoying the Rottnest Island Ferry and Adventure Boat Tour, departing from Perth or Fremantle, with a view of the island's coastline

Weather: Warm to mild, highs 22–28°C, rainfall increases in May.
Crowds: Easing after summer, quieter by late autumn.
Activities: Hiking, cycling, historical tours, sunset viewing.
Wildlife: Quokkas are active, and birdlife is abundant.
Pros: Pleasant temperatures, fewer crowds, beautiful sunsets.
Cons: Rain increases from May, and water cools gradually.

Sydney Harbour whale watching cruise with tourists observing a breaching whale.

Weather: Coolest, highs 17–19°C, wettest period.
Crowds: Lowest, peaceful atmosphere.
Activities: Walking trails, photography, whale watching (late winter), and indoor attractions.
Wildlife: Quokkas, winter birds, dramatic coastal scenery.
Pros: Tranquility, lush landscapes, off-peak pricing.
Cons: Rainy days, some activities are limited by weather.

Best time to visit based on your travel style

Who you are

Best time to visit

Why

Sunlovers

Dec–Mar

Hot, sunny, perfect for beaches and swimming

Families

Sep–Apr

School holidays, events, wildlife, and comfortable weather

Budget travelers

May–Aug

Off-peak prices, fewer crowds

Hikers & cyclists

Mar–May, Sep–Nov

Mild temps, wildflowers, and less heat

Surfers

Winter–Spring

Bigger swells, fewer crowds

Wildlife enthusiasts

Sep–Dec, Apr–Aug

Quokka joeys, birdlife, whale migration

Relaxation seekers

May–Aug

Quiet, peaceful, serene landscapes

Tips to plan your Rottnest visit

Major events: The Rottnest Channel Swim (late February) draws large crowds and is a highlight for sports fans. The Swim Thru Rottnest (December), Rottnest Marathon (October), and summer music/food festivals are also popular.
School leavers: Late November sees an influx of school leavers; families and those seeking tranquility may wish to avoid this period.
Ferry & bus timetables: Book ferries in advance, especially in peak periods, and check current timetables. The island’s hop-on/hop-off bus is convenient for exploring, but plan for schedules.
Accommodation: Book early for summer and event periods; off-peak stays offer better rates and availability.
Weather prep: Bring sun protection year-round-shade is limited and UV is high, even in winter.
Wildlife etiquette: Enjoy quokkas and other fauna, but do not feed them.

Frequently asked questions

Can I visit Rottnest Island year-round?

Yes, but what you experience will vary by season. Summer is best for beaches and water sports; spring and autumn offer wildflowers and mild weather; winter is tranquil and great for exploring on foot.

When is the water warmest for swimming and snorkeling?

Water temperatures peak in summer (23°C), but are swimmable from late spring through early autumn.

Are there any periods to avoid?

Late November (school leavers) and major event weekends can be crowded and noisy. Book ahead or choose quieter months for a more relaxed visit.

How do I get around the island?

Rottnest is car-free. Hire a bike, use the hop-on/hop-off bus, or walk. Buses and bikes can be booked in advance or on arrival.

What wildlife can I see and when?

Quokkas are visible year-round, with joeys emerging in spring. Birdlife is abundant in spring and autumn, and whales may be spotted offshore in late winter and spring.