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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Insightly Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Bonnet Bay’s weather today, as shown in the live forecast above, is typical for this tucked-away suburb on the Woronora River, with conditions often a few degrees cooler than the Sydney coast due to its inland valley position.
What makes Bonnet Bay’s weather different from Cronulla or the coast?
Bonnet Bay sits about 15 kilometres south-west of the Sydney CBD, nestled in a bushland valley along the Woronora River. This inland setting means summer afternoons can feel stickier than at Cronulla, with less sea-breeze relief. Overnight temperatures also drop more sharply in winter, as cold air drains into the valley. For a broader picture of the region, check our Sydney weather page.
How do the tides affect Bonnet Bay?
The Woronora River is tidal through Bonnet Bay, so water levels rise and fall with the ocean cycle. High tide can push river water up into low-lying backyards and boat ramps, particularly during king tides. For precise times, refer to the bonnet bay tides data in the live forecast above, which is essential for kayaking or fishing plans.
Is Bonnet Bay prone to flooding?
Yes, low-lying areas near the Woronora River can flood after heavy rain, especially when a king tide coincides with a downpour. Always check the Severe Weather Warning page before storms.
Does Bonnet Bay get the same storms as Cronulla?
Not always. The valley can trap storm cells, making afternoon thunderstorms more intense than on the coast. However, coastal storms often weaken by the time they reach Bonnet Bay. For local updates, see Australia weather.
What is the best time of year to visit Bonnet Bay?
Autumn (March to May) offers mild days, low humidity, and calm river conditions. Spring can be windy, and summer afternoons often bring thunderstorms. Winter mornings are crisp but clear.