Home › Weather › September Weather Sydney
Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Down Under Brief Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Pack layers for Sydney this September. The live forecast above shows current conditions, but typical spring days bring mild afternoons while mornings and evenings stay cool. Rain is possible, so a jacket and umbrella are wise.
What’s the typical September weather in Sydney?
Sydney’s September marks the start of spring, with average maximums near 20°C and minimums around 12°C. Rainfall is moderate — about eight wet days across the month. Sea breezes keep coastal suburbs fresh, while inland areas like Parramatta run slightly warmer. For a closer look at daily conditions, head to our Sydney weather page.
How does Sydney compare to other capitals in September?
Melbourne weather September is cooler, with average highs near 17°C and more frequent showers. Brisbane runs warmer, while Perth enjoys drier, sunnier days. For those planning ahead, weather in Sydney in October climbs to about 23°C — a clearer sign of summer. Across NSW, September brings a mix of crisp inland mornings and mild coastal afternoons (september weather nsw). In Fahrenheit terms, Sydney’s 20°C equates to about 68°F (sydney weather september fahrenheit).
Is September a good month to visit Sydney?
Yes — mild days and fewer crowds make it a pleasant time. Just pack a variety of clothing for cool mornings, warm afternoons, and the odd spring shower.
Does it rain a lot in Sydney in September?
Rainfall is moderate — around eight wet days. It’s less soggy than autumn or winter, but a light jacket and umbrella are still worth packing.
What’s the ocean temperature in Sydney this month?
Water temperature sits around 18°C. Still cool for swimming without a wetsuit, though many locals enjoy the beach on calm afternoons.