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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Australian Insight Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Underdale’s weather is typically mild and pleasant from October to April, with warm summers and cool, damp winters—making spring and autumn the most comfortable times for a visit in Adelaide’s inner-southwest.
What is the best time to visit Underdale for good weather?
The sweet spot is November through March, when daytime highs sit in the mid-20s to low 30s Celsius and rainfall is low. January and February can push into the high 30s, so pack a hat and sunscreen. For cooler, crowd-free days, October and April also deliver fine conditions, though you may see a few rain showers.
What should I pack for Underdale’s weather?
In summer (December–February), bring light clothing, a wide-brimmed hat and a refillable water bottle; evenings can still be mild, so a light jacket is handy. For winter (June–August), temperatures drop to 8–15°C with regular rain—pack a waterproof jacket and layers. A pair of comfortable walking shoes works year-round, especially if you plan to explore nearby parklands or the coast.
Does Underdale get very hot in summer?
Yes, heatwaves can push temperatures above 38°C for a few days, usually in January or February. Check Adelaide Weather for heat warnings, and plan indoor activities or coastal trips on extreme days.
Is Underdale windy like other parts of Adelaide?
Underdale can be breezy, especially in spring (September–November) when northerly winds pick up. It’s less exposed than coastal suburbs, but a windproof jacket is handy from September through November.
When do school holidays fall in South Australia?
South Australian school holidays typically run early April (2 weeks), early July (2 weeks), and late September (2 weeks). These periods see higher demand for local accommodation, so book ahead if visiting during these weeks.