Adelaide in September
September is right in the heart of spring for Adelaide, and the weather has a definite personality this time of year.
Expect the mercury to hit around 17.7 degrees during the day and settle at 8.9 degrees after dark. It's cool but manageable. A jumper handles most of it.
At 17.7 degrees, September sits 3.8 degrees below the annual average of 21.5 degrees.
The rain data says 45mm over 14 days. Nothing dramatic.
Sunshine-wise, September delivers around 17.2 MJ/m2 of daily solar radiation. UV sits in the very high category. You'll want SPF 50+ and a decent hat.
At 5.5/10 on the Comfort Score, September is middle of the road.
For your suitcase: a decent jumper or fleece, and serious sun protection.
Check the data table below for the full picture, or compare Adelaide in September with another destination.
September at a Glance
Temperature Range
Daily temperature range in September. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- A jumper or light cardigan for flexibility
- A warm jumper or fleece for cool mornings and evenings
- Proper rain gear for frequent showers
- Sunscreen (SPF 30+) and sunglasses for UV protection
Coming From Overseas?
How September in Adelaide stacks up against major cities around the world.
About 2 degrees cooler and considerably drier.
About 8 degrees cooler and considerably drier.
About 9 degrees cooler and considerably drier.
How September Compares
Adelaide's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 26.8 | 16.1 | 85mm | 8.7 |
| Feb | 28.1 | 15.4 | 0mm | 8.6 |
| Mar | 27.9 | 16.1 | 1mm | 8.6 |
| Apr | 19.6 | 10.4 | 19mm | 7.2 |
| May | 19.2 | 8.1 | 16mm | 6.8 |
| Jun | 14.4 | 7.5 | 104mm | 1.6 |
| Jul | 14.1 | 7.9 | 74mm | 1.9 |
| Aug | 17.4 | 9.9 | 53mm | 4.7 |
| Sep | 17.7 | 8.9 | 45mm | 5.5 |
| Oct | 22.2 | 11.5 | 19mm | 9.8 |
| Nov | 24.3 | 14.2 | 29mm | 10.0 |
| Dec | 26.8 | 16.1 | 11mm | 9.3 |