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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Coast Pulse Hub Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows Sydney’s outlook for the next 30 days, with coastal showers and mild temperatures typical of late spring and early summer dominating the pattern.
What does the 30-day outlook for Sydney look like?
The 30-day forecast for Sydney indicates a blend of warm, settled days and brief, humid bursts driven by easterly seabreezes. Daytime highs generally sit between 23°C and 28°C, while overnight lows hover around 17°C to 20°C. Rain chances increase in the second and fourth weeks as troughs move across the coast.
- Daytime maximums: mostly 24–27°C, with occasional cooler days near 22°C during a southerly change
- Overnight minimums: 17–20°C, warmer near the harbour and cooler in western suburbs
- Rainfall: 8–12 rain days expected, most likely in the middle of the period
- Wind: afternoon seabreezes from the northeast, turning south to southeast ahead of any trough
How reliable is a 30-day forecast for Sydney?
A 30-day outlook gives a broad trend rather than a day-by-day guarantee. The Bureau of Meteorology’s extended model is most accurate for the first 14 days, with confidence decreasing beyond that. For precise planning, check the 14 day weather forecast sydney and 21 day weather forecast sydney updates regularly.
For a more granular view, the sydney weather 28 day forecast can help identify settled windows for outdoor plans. The sydney weather 28 day forecast bom page is a reliable source for those wanting official model runs.
What is the best way to read a 30-day forecast for Sydney?
Focus on the weekly trend rather than exact daily numbers. Look for patterns in temperature, wind direction and rain probability. Use the first week as your planning baseline and revisit the 15 day sydney weather forecast 14 days section for a mid-range update.
Will Sydney have any heatwaves in the next 30 days?
Heatwaves are unlikely in this period. Extended warm spells above 32°C are rare before December. However, a few days of 29–31°C can occur if a northwesterly wind arrives, usually followed by a southerly change and a drop of 6–8°C.
Does the 30-day forecast account for La Niña or El Niño?
Yes, the long-range models factor in the current ENSO phase. As of this outlook, neutral conditions mean no strong bias toward wet or dry. The forecast reflects typical spring-to-summer variability with no extreme signals from the Pacific or Indian Oceans.
For broader Australian conditions, visit the Australia weather hub. Compare Sydney’s outlook with Melbourne Weather or Brisbane Weather. Stay informed about any developing storms at Severe Weather Warning.