Barossa Valley in September
September is right in the heart of spring for Barossa Valley, and the weather has a definite personality this time of year.
Daytime highs average 17.0 degrees, dropping to 7.0 degrees overnight. That's a 10-degree swing between day and night. It's cool but manageable. A jumper handles most of it.
At 17.0 degrees, September sits 4.7 degrees below the annual average of 21.7 degrees.
You're looking at 47mm of rain across 13 days in a typical September. Light enough that it won't ruin your plans.
Solar exposure averages 16.4 MJ/m2 per day in September, with UV levels in the very high range. You'll want SPF 50+ and a decent hat.
The Comfort Score is 5.0/10 for September. It's fine, but not the highlight of the calendar.
For your suitcase: a decent jumper or fleece, and serious sun protection.
The full data breakdown is below. You can also see how other Australian cities compare in September.
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 Barossa Valley stacks up against major cities around the world.
About 3 degrees cooler and considerably drier.
About 9 degrees cooler and considerably drier.
About 10 degrees cooler and considerably drier.
How September Compares
Barossa Valley's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 28.6 | 15.7 | 95mm | 7.4 |
| Feb | 30.1 | 15.7 | 0mm | 7.2 |
| Mar | 28.5 | 16.2 | 6mm | 8.1 |
| Apr | 19.7 | 9.1 | 10mm | 7.4 |
| May | 18.5 | 8.9 | 11mm | 6.3 |
| Jun | 13.6 | 6.3 | 66mm | 1.5 |
| Jul | 12.7 | 6.1 | 79mm | 1.0 |
| Aug | 16.9 | 8.4 | 72mm | 4.3 |
| Sep | 17.0 | 7.0 | 47mm | 5.0 |
| Oct | 22.1 | 10.3 | 50mm | 9.5 |
| Nov | 24.7 | 12.7 | 38mm | 10.0 |
| Dec | 28.4 | 13.9 | 15mm | 8.1 |