Williamstown weather in September (South Australia, Australia)

How does the September weather in Williamstown compare to other months? See what weather conditions to anticipate this month with our guide.

Temperatures

September in Williamstown generally includes pleasant temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 18°C. However, as the sun sets and evening approaches, there's a noticeable cool-down. Temperatures gently drop to a more temperate 7°C.

Precipitation

Williamstown in September usually receives moderate rainfall, averaging around 59 mm for the month. The month brings the most rain, so be prepared with an umbrella for the occasional shower. Past climate data indicates that roughly 9 days will see rain.

Average sunshine

Expect sunny days throughout the month, with an estimated 204 hours of sunshine. Making it a pleasant time to visit Williamstown.

If you prefer dry days with pleasant temperatures, January, February, March, April, October, November and December typically offer the best circumstances. While June, July and August tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Williamstown climate page with graphs.

 

Williamstown, monthly averages in September

Min Temperature 7°C  

Max Temperature 18°C  

Chance of Rain 28%  

Precipitation 59 mm  

Rainy days 9 days  

Humidity 51% *  

Sunshine 204 hours *  

Percentage Sunshine 61% *  

Data from: Adelaide, Australia (39 KM, 24 Miles).

Where to go in Australia in September

Find out more about the weather in Australia and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Williamstown, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

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

Cycling

10/10

Walking

10/10

Camping

4/10

Outdoor sports

10/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Williamstown.

Our site offers climate and forecast data for every country in the world. Are you going to Australia? On this website you can find historical weather averages for many cities in Australia. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.