South Australia weather
Our guide to the weather in South Australia during September
We've looked at the most up-to-date weather data for South Australia, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about South Australia weather in September.
How warm is it in South Australia during September?
The temperature reaches around 23℃ during the daytime in September, falling away to 12℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it rain in South Australia during September?
On average, in September you'll see rain on just one day in the month. In other words, you shouldn't see any of the wet stuff. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in South Australia during September?
You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during September. With moderate humidity and mild air temperatures, the breeze will have a slight cooling effect.
Is it too cold to swim in the sea in South Australia during September?
The water around South Australia is a bracing 14℃ during September and would be considered too cold for swimming. Those who are a bit more hardy or frequently swim in cooler open water might want to take a quick dip. A wetsuit would be advisable if you wish to spend longer than 5 minutes in the water.
South Australia Blog posts
From the UK's most popular travel bloggers
6 Amazing Day Trips from Adelaide
8th November 2025 by Mini Adventures
If you're planning a stay in Adelaide, you're in for a treat. While the city itself has plenty to offer, there are also some fantastic day trips just a short drive away. In this guide, you'll find six excellent options for exploring the stunning landscapes and charming towns surrounding South Australia's capital. Having spent a year living in Australia, including time in Adelaide, the author shares their personal recommendations for making the most of your time in this vibrant region....
The Perfect 2-Day Adelaide Itinerary for First-Time Visitors
23rd December 2025 by Mini Adventures
For those planning a short escape to Adelaide, this two-day itinerary is designed to help first-time visitors make the most of their time in the city. From fascinating museums to delightful dining spots and comfortable accommodation options, it covers all the essentials. Having spent a year in Australia, including a significant amount of time in Adelaide, the author shares insights that highlight the charm of this often-overlooked destination, which may not have the same buzz as some larger...
How to Spend a Day in Hahndorf – South Australia’s German town
1st January 2026 by Mini Adventures
Nestled in the picturesque Adelaide Hills, Hahndorf offers a delightful slice of Germany right in South Australia. For those seeking a unique day out, this charming town is brimming with culture, history, and delicious food. While living in Australia has been a fantastic experience, the allure of Hahndorf’s German heritage makes it a must-visit for anyone longing for a taste of Europe. Here’s how to make the most of your day in this enchanting destination....
Adelaide: An Underrated Travel Destination
16th August 2024 by Coco Butter Blog
Adelaide is a city that often gets overshadowed by Australia's more renowned destinations such as Sydney and Melbourne. However, with its lively food scene, rich history, stunning architecture, and a bustling schedule of festivals and events, the capital of South Australia has plenty to offer travellers who take the time to explore it....
Adelaide Uncovered: Coffee Lanes, Gourmet Nights,
9th October 2023 by PommieTravels
Discover the vibrant barista culture, indulgent gourmet nights, and warm Aussie hospitality that Adelaide has to offer. Known as the "City of Churches," this charming city is a true delight for travelers. With its mix of historical architecture, picturesque parks, and a stunning coastline that seems to go on forever, Adelaide is a destination that guarantees a wide range of experiences. However, its appeal goes beyond its natural beauty. Adelaide is also home to a thriving coffee scene, where...
Best Adelaide Experiences: A Great 5-Day Itinerary (including Kangaroo Island)
7th April 2023 by Where Angie Wanders
I looked forward to being a tourist in Adelaide, seeing the bronze pigs in Rundle Mall, eating chocolate from Haighs, discovering Adelaide’s museums and watching the sunset in Glenelg. And, of course, the highlight of our time in Adelaide would be experiencing 2-days with the wildlife on Kangaroo Island before leaving the city and heading on a road trip to Melbourne via the Great Ocean Road....
Weather in South Australia
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