The Bureau of Meteorology’s August to October 2025 long-range forecast tips above average rainfall for most of mainland Australia. The Bureau says above average rainfall is likely to very likely (60% to greater than 80% chance) for most of mainland Australia, apart from the west and far south-east, Beef Central reported.
It adds that there is an increased chance of unusually high rainfall, with chances exceeding 50% (5 times the normal likelihood) for southern Queensland, southern Northern Territory, parts of eastern South Australia and western and northern New South Wales, west of the Great Dividing Range.
August and September are within the northern Australian dry season. During this time, most of tropical northern Australia typically receives very low rainfall, with monthly average rainfall less than 10 mm for these months. During September to November, northern Australia transitions from the dry to the wet season, which is associated with a seasonal increase in humidity, storms and showers.
