Long, languid days await on Wadjemup / Rottnest Island in summer. This is the season for slipping into refreshing waters, lounging on pristine sands and savouring the view of a sky so blue.
Rottnest Island in summer
Summer encompasses the months of December, January and February in Australia. December welcomes the arrival of a new Noongar season, Birak, which is known as the first summer. During the months of December and January, shades of red and brown begin to blanket the island, contrasting with the blues and greens of the water. February begins with the Noongar season of Bunuru: the second summer. This is the hottest period of the season and sees warm easterly winds heat up Wadjemup during the day followed by late sea breezes which provide welcome relief in the afternoons.
Weather to expect during summer on Rottnest Island
Summer on the island is a few degrees cooler than the mainland of Perth, with average daily temperatures generally ranging from mid-to-high 20°C. However, it can get much warmer, with heatwaves observed on the mainland often extending to the island. Temperatures of up to 40°C can be experienced in February, during which time there’s no better way to experience the island than dipping into the transparent waters of the many beautiful bays and beaches. The water is also surprisingly warm (while remaining refreshing), thanks to the Leeuwin Current which flows along the west coast of Australia and creates summer sea surface temperatures of around 23°C. Each afternoon, a refreshing breeze known as the Fremantle Doctor sweeps through. Fortunately, being an island, there is always a sheltered bay to swim in no matter which way the breeze is blowing.
Carry adequate water supplies
Outside of the main settlement, there is limited access to drinking water. Drinking water refill points can be found within the Thomson Bay settlement and at the Army Jetty, Kingstown Barracks, The Basin, Vlamingh Lookout and Geordie Bay.
What you can do during summer
Looking for inspiration? Here are the natural surrounds, wildlife sightings and historical experiences that are best appreciated during summer.
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Frequently Asked Questions
Summer on Wadjemup is an enjoyable experience that allows you to make the most of the alluring waters. Warm days are best enjoyed bay or beachside as you stroll, bus or cycle your way around the coastline. Enjoy the lively atmosphere that summer brings, with boats bobbing in the water, school holiday activities (during December and January) and endless options to drink and dine.
However, please note that summer is the busiest time of the year to visit, and it can get quite crowded, particularly over school holidays. Wait times for food and drink might be longer, and availability for bikes and bus seats can be limited. To ensure a smooth and enjoyable visit, we recommend booking bus tickets, bike hire, and ferry transfers in advance.
With warm weather in full swing, classic Rottnest Island experiences such as swimming, snorkelling and boating are popular with first-time visitors and frequent travellers alike. During the start of summer, the salt lakes come to life, reptiles are more active, and it is common to see dobitj (dugites) and yondi (King skinks) along the winding island trails. Make the most of the long days with outdoor activities such as hiking and cycling in the morning or afternoon, then take to the waters during the heat of the day to frolic, float and recharge.
A day trip to Wadjemup / Rottnest Island is a great way to visit, especially if you catch the first and last ferry of the day. You’ll have plenty of time to explore and enjoy the wonders of the island. You can also see even more of the island by hiring a bike or catching the Quokka Coaches Island Explorer hop-on hop-off bus. If you’re shorter on time or prefer to stay close to the settlement, simply walk to some of the most iconic spots the island has to offer.
Summer is the most popular time to visit so we always recommend pre-booking your ferry journey, bike hire and any tours and restaurants to ensure that you won’t miss out, plus it saves you valued time upon arrival.
Here are some recommended travel items to make your island experience as comfortable as possible.
- Water bottle (there are water refill stations around the island)
- Sunscreen
- Wide-brimmed hat
- Sunglasses
- Beach umbrella or shade
- Snorkel and mask (also available to hire on the island)
- Bathers
- Towel
- Lightweight, light-coloured, breathable clothing
Wadjemup / Rottnest Island is a wildlife paradise all year round. There island’s six distinct habitats are abundant with animal, bird, and sea life, from the serene woodland to the vibrant wetlands and expansive ocean.
During the warmer months, the sparkling waters surrounding the island are perfect for swimming and snorkelling amongst over 135 species of tropical djildjit (fish). Plus, the wider ocean is home to manyil (long-nosed fur seals) and kwilena (bottlenose dolphins), offering memory-worthy moments for nature enthusiasts.
On land, it’s not uncommon to spot the island’s resident reptiles like the yoorn (bobtails) and the woondi (king’s skink). And of course, no visit is complete without encountering the world-famous kwoka (quokkas) as they roam the landscape or nap in the shade, out of the summer sun.
You’ll also have a chance to spot countless bush birds including the koobanmokin (red-capped robin) and doolor (silvereye). On the lakes and in the skies, there are also nyimarak (Australian shelducks), monop-mart (bridled tern) and kaldjirkang (crested terns), and magnificent yoondoordoo (eastern ospreys).
Beware of snakes: Be aware there are venomous snakes on Wadjemup / Rottnest Island. The dugite is a timid creature, but may bite if harassed. If bitten, seek immediate medical assistance.
Just as you would find on the mainland, flies can be encountered all year round but tend to increase during the start of summer (commonly around November). However, it is usually very specific days that bring in more flies than usual, such as when an easterly wind is blowing.
The average temperature over the summer months on Rottnest Island are as follows:
- December: 17.7 – 25.2°C
- January: 19.1 – 26.6°C
- February: 19.5 – 27.3°C
Summer on Rottnest Island offers warm, sunny days perfect for beachside relaxation and outdoor adventures. While the island is a few degrees cooler than Perth, heatwaves can push temperatures up to 40°C. Remember to stay hydrated and take breaks in the shade to fully enjoy the vibrant summer atmosphere safely.
Summer days on Rottnest Island are noted for their beach weather, with minimal rainfall:
- December: 10 mm
- January: 14 mm
- February: 10.6 mm
With such low rainfall, you can expect plenty of sunny days perfect for exploring the island's stunning coastline, swimming in crystal-clear waters, and enjoying the vibrant summer atmosphere.