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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Southern Pulse Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
A 28-day weather forecast for Perth provides a broad outlook on likely temperature and rainfall trends, but accuracy drops significantly beyond the first week. The live forecast above shows the current 28-day outlook from the Bureau of Meteorology, which is best used for spotting general patterns rather than planning specific days.
How reliable is a 28-day forecast for Perth?
Extended-range forecasts, like the 28-day outlook, are designed to show average conditions and broad weather trends, not precise daily details. For Perth, this means you can get a sense of whether a period is likely to be hotter or cooler than average, or if rain is more probable. For day-to-day decisions, the bom 14 day forecast perth is far more reliable, as it uses higher-resolution models. The 28-day view is useful for long-term planning, such as scheduling outdoor events or travel, but always check the live forecast above for the latest updates.
What does the 28-day outlook tell you about Perth’s weather?
Perth’s weather is dominated by the Indian Ocean and the west coast’s subtropical ridge. In summer, the 28-day forecast often shows consistent dry, hot conditions, while in winter it highlights the passage of cold fronts and rain bands. The perth 21 day forecast bom and 28-day outlook are particularly helpful for spotting the onset of a heatwave or a prolonged wet spell. For example, if the outlook shows a persistent high-pressure system, you can expect several days of clear skies and light winds. For immediate plans, refer to the 28 day weather forecast perth tomorrow section in the live forecast above.
Can I trust the 28 day weather forecast perth met office data?
The Bureau of Meteorology (BOM) provides the most authoritative extended-range outlook for Perth. While not as precise as a 7-day forecast, it is reliable for identifying broad trends like heatwaves or wet periods.
How does the perth weather 28 day forecast accuweather compare?
AccuWeather offers a proprietary 28-day forecast, but for Australian conditions, the BOM’s outlook is generally more accurate due to its local modelling. Always cross-check with the live forecast above for consistency.
What is the difference between perth weather 28 day forecast 14 days and a 7-day forecast?
The 28-day forecast shows weekly averages and trends, while a 7-day forecast gives daily details. For planning a specific day, use the 7-day; for a holiday window, the 28-day is useful.
For more detailed daily and weekly outlooks, visit our Perth Weather page or the Australia weather hub. You can also check conditions in other capitals like Sydney Weather or Melbourne Weather.