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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Australia Data Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Kangaroo Island’s weather is mild Mediterranean: warm, dry summers and cool, wet winters. The live forecast above gives today’s conditions, while coastal sea breezes often keep afternoons cooler than inland South Australia. Expect changeable weather in spring and autumn, with clear skies common from December through February.
What is the seasonal pattern on Kangaroo Island?
Summer (December–February) brings average highs around 24–26°C, with sea breezes making coastal spots like Kingscote feel fresher. Winter (June–August) sees highs of 14–16°C, and rain is more frequent – most of the island’s annual 540 mm falls between May and September. Spring and autumn can swing between warm, settled days and cool, showery periods, so you’ll want layers if you’re visiting in November or March.
How do winds and ocean affect the forecast?
The island sits exposed to the Southern Ocean, so south-westerly winds can drop apparent temperatures sharply, even in summer. Swells and onshore breezes also mean coastal spots may feel cooler than inland areas like Parndana. If you’re checking a 7‑day forecast or a 14‑day outlook, pay attention to wind direction – it often makes the difference between a perfect beach day and a chilly afternoon.
What is the weather in Kangaroo Island in December?
December marks the start of summer, with average highs around 24 °C and plenty of sunshine. Sea breezes keep coastal areas comfortable, but inland spots can reach the high 20s. Rain is uncommon – you’ll typically enjoy clear, settled days.
Does Kangaroo Island get strong winds?
Yes, particularly from spring through early summer. The island is exposed to the Southern Ocean, so south-westerly winds can gust 30–50 km/h. If you’re looking at a 10‑day forecast, watch for wind warnings – they can affect outdoor plans, especially on the south coast.
How accurate are 14‑day forecasts for Kangaroo Island?
Reliable for broad trends (e.g. a warm spell or a rain band), but day‑by‑day specifics beyond 7 days can shift. The Bureau of Meteorology’s BOM data is the most trusted source for 30‑day outlooks. For trip planning, check the 7‑day forecast a few days out.
For general conditions across South Australia, see the Adelaide weather page or the Australia weather hub. If you’re planning a trip, the severe weather warning page will help you stay safe during storms or strong winds.