Sydney in September

During September, Sydney, Australia usually sees daytime temperatures around 20°C / 68°F, dipping to about 11°C / 53°F overnight. Rainfall totals roughly 42.9 mm (1.69 in) over 9 rainy days. It's one of the driest months.

Highlights

• UV levels are very high — Sun protection is essential.
• Daylight averages about 11.9 hours. Sunrise is typically around 06:53 and sunset near 18:46.
• Skies trend toward plenty of sunshine.
• Expect a touch of humidity.
• Winds are typically fresh, averaging around 42 km/h (26.1 mph) with gusts up to about 113 km/h (70.2 mph).
• Snowfall is unlikely.
• Conditions can shift slightly, with warmer later in the month.

Trip tips

• High UV — carry SPF 50+, hat and sunglasses; plan a shade break around midday.
• Comfortable for walking and sightseeing most days.
• Gusty days are possible — a windproof layer helps on exposed coastlines.
• Late‑month tends a bit warmer — lighter layers are more useful toward the end.
• One of the driest months — good weather reliability for outdoors.