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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Australia Focus Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
If you’re planning a trip, check the live forecast above and expect a mild maritime climate with cooling sea breezes. Rottnest Island’s weather is shaped by the Indian Ocean, making it generally pleasant year-round – ideal for beaches and cycling.
What’s the weather like on Rottnest Island today and this week?
The live forecast above gives you the most accurate picture for today and the coming days. Rottnest island weather tomorrow can shift quickly with sea breezes, so keep an eye on wind speeds if you’re heading out on the water. For longer planning, weather in rottnest island 10 days and rottnest island weather 14 days are useful, but note that coastal forecasts can change. The Bureau of Meteorology provides reliable updates, and we link to it below.
How does the weather vary by season?
Rottnest island weather by month follows a classic Mediterranean pattern: dry, warm summers (December–February) and cool, wet winters (June–August). February is typically the warmest month, with average highs around 28–30°C, though sea breezes keep it comfortable. If you’re looking at a rottnest weather 21 day forecast, expect more variability in spring and autumn. For detailed monthly averages, see our Perth Weather page, as Rottnest’s climate closely mirrors the city’s.
What is the best time to visit Rottnest Island?
Summer (December to February) offers the warmest, sunniest weather for swimming and snorkelling. Autumn and spring are milder and less crowded, while winter brings rain but quieter streets. Always check the live forecast above before you go.
Does it rain a lot on Rottnest Island?
Rainfall is modest overall – around 600–700 mm a year – with most rain falling between May and September. Summers are largely dry, so rottnest island weather february is typically sunny with only the occasional shower.
Is Rottnest Island very windy?
Sea breezes are common, especially in summer afternoons, with winds often picking up to 15–25 km/h from the south-west. Storms can bring stronger gusts, but generally the island’s winds are manageable. Check severe weather warnings if planning a boat trip.