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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Down Under Brief Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Keep a close watch on the live forecast above for Sydney – it shows a typical early-autumn westerly pattern – but for Adelaide the 14-day outlook is more settled, with a high-pressure ridge likely to keep conditions mild and mostly dry through the first week before a possible cool change arrives in the second.
What will the weather be like in Adelaide over the next 14 days?
The adelaide weather 14 day forecast points to a slow-moving high-pressure system dominating the region, especially during the first week. Daytime temperatures should sit in the low to mid-20s Celsius, with overnight lows around 12–15°C. A weak front may brush the coast around day 10 or 11, bringing light showers and a slight drop in temperatures. For the shorter-range picture, the adelaide weather 7 day forecast from the Bureau of Meteorology gives the most reliable guidance. Those looking further ahead can check the bom adelaide 14 day forecast – models align reasonably well for the first 10 days, but the adelaide weather 21 day forecast and adelaide weather 30 day forecast are far less certain and should be treated as broad tendencies.
How reliable is a 14-day forecast for Adelaide?
For most accurate 14 day weather forecast, rely on the Bureau of Meteorology’s official products. Computer models for Adelaide show good skill out to about 8–9 days, then confidence drops. While the adelaide weather 14 day forecast accuweather and adelaide weather 14 day met office are popular alternatives, they often disagree beyond the first week. Use the first seven days as a solid planning window and treat the outer days as an outlook only. If you need a longer view, the adelaide weather 21 day forecast 14 days is essentially a long-range pattern call.
What is the best source for Adelaide’s 14-day forecast?
The Bureau of Meteorology offers the most accurate 14 day weather forecast for Adelaide, updated twice daily. Weatherzone and Elders provide alternative outlooks, but BOM’s data is the gold standard for official warnings and trend certainty.
When is the best time of year to visit Adelaide?
Autumn (March to May) and spring (September to November) deliver mild days, low humidity and clear skies. The 14-day outlook for autumn, as described above, reflects those settled conditions. Summer can be hot with possible heatwaves.
How does Adelaide’s weather compare to Sydney or Melbourne?
Adelaide is generally drier than both cities, with fewer overcast days. Sydney receives more coastal humidity, while Melbourne is more variable day-to-day. Check the live forecast above for Sydney and our Melbourne weather page for direct comparisons.