Rockdale Weather in September

September in Rockdale brings pleasant temperatures, with daytime highs of 20°C (68°F) and nights around 12°C (54°F). Rainfall is at its lowest this month, making it one of the more reliable months to be outdoors.

Rainfall in Rockdale in September

September is the month with the least rainfall. Whether you're keen on hiking, outdoor festivals, or just enjoying a walk, this month provides a reliably dry backdrop for all your plans. Based on our climate data of the past 30 years, about 10 days of rain are anticipated, with 50 mm (2 in) on average. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Rockdale in September

Weather in Rockdale is at its perfect in September. Highs reach 20°C (68°F), while nights settle around 12°C (54°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Rockdale in September

With approximately 234 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Rockdale in September

Average wind speeds reach 3 m/s (6 knots) in September, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in September

The water temperature is 17°C (63°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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• January
• February
• March
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• May
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• October
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For a detailed overview over the year and the best time to visit Australia, check out our Rockdale's climate page.

Rockdale Temperature in September

Min Temperature 12°C (54°F)  

Max Temperature 20°C (68°F)  

Water Temperature 17°C (63°F) *  

Chance of Rain 33%  

Precipitation 50 mm (2 in)  

Rainy days 10 days  

Humidity 50% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 234 hours *  

Percentage Sunshine 66% *  

* Data from: Sydney, Australia (4 KM, 2 Miles).

What to Wear in Rockdale in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Expect water temperatures of around 17°C (63°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Rockdale in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

8/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Australia, check out our Rockdale's climate page.

More climate data for Rockdale

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Rockdale climate overview or explore weather in Australia.