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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 ·
Sylvania Waters currently has the weather shown in the live forecast above, with conditions typical of a coastal estuary environment that responds quickly to sea breezes and passing showers.
What is the weather like in Sylvania Waters today?
Sylvania Waters sits inside the Georges River estuary, so its weather is heavily influenced by the nearby coast. The live forecast above shows the current temperature and whether a sea breeze has arrived. Afternoon humidity often rises as the tide pushes warmer, moist air up the river, making the felt temperature higher than the reading.
How does the local geography affect Sylvania Waters weather?
The waterways and surrounding bushland create microclimates. In summer, the water surface warms slowly, so the suburb can stay a degree cooler than inland suburbs. In winter, the estuary holds heat, keeping overnight minimums milder. The live forecast above will reflect these subtle differences compared to Sydney’s official observation site.
Does Sylvania Waters get more rain than Sydney?
Rainfall is similar to central Sydney, averaging 1,200–1,300 mm annually. However, the estuary can create localised thunderstorms in summer, so a shower shown in the live forecast above may hit Sylvania Waters but miss Cronulla.
When is the best time to visit Sylvania Waters for boating?
Autumn (March to May) offers the most stable weather. The live forecast above will show lighter winds and lower humidity, making for safer conditions on the water. Summer afternoons often bring strong sea breezes that can make small craft handling difficult.
How accurate is the forecast for Sylvania Waters?
The live forecast above uses Bureau of Meteorology data for the Sydney metropolitan area. Because of the estuary’s local effects, the actual temperature can vary by 1–2°C from the forecast. Checking the live forecast on the day remains the most reliable guide.
Sources
For broader conditions, see our Australia weather hub or check the Sydney weather page for regional forecasts. If storms develop, our severe weather warning page has the latest alerts.