Wonthaggi in September
September is right in the heart of spring for Wonthaggi, and the weather has a definite personality this time of year.
Daytime highs average 15.1 degrees, dropping to 10.1 degrees overnight. That's a 5-degree swing between day and night. It's cool but manageable. A jumper handles most of it.
At 15.1 degrees, September sits 3.0 degrees below the annual average of 18.1 degrees.
You're looking at 104mm of rain across 20 days in a typical September. A decent amount, but not relentless.
Sunshine-wise, September delivers around 12.3 MJ/m2 of daily solar radiation. UV sits in the high category. Sun protection is still a good idea, especially around midday.
With a Comfort Score of 2.4/10, September is not the most comfortable time to visit.
For your suitcase: a decent jumper or fleece, waterproof gear, and SPF 50+ sunscreen and a hat.
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 waterproof jacket or compact umbrella
Coming From Overseas?
How September in Wonthaggi stacks up against major cities around the world.
About 5 degrees cooler and considerably wetter.
About 11 degrees cooler and considerably wetter.
About 12 degrees cooler and considerably drier.
How September Compares
Wonthaggi's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 22.1 | 15.2 | 71mm | 8.8 |
| Feb | 23.1 | 15.2 | 10mm | 10.0 |
| Mar | 22.4 | 15.0 | 17mm | 9.5 |
| Apr | 17.2 | 12.3 | 107mm | 3.7 |
| May | 16.3 | 10.3 | 40mm | 3.7 |
| Jun | 12.9 | 8.5 | 43mm | 1.0 |
| Jul | 12.6 | 7.7 | 100mm | 1.0 |
| Aug | 16.0 | 9.3 | 54mm | 3.5 |
| Sep | 15.1 | 10.1 | 104mm | 2.4 |
| Oct | 17.4 | 10.7 | 96mm | 5.0 |
| Nov | 20.3 | 12.8 | 74mm | 7.7 |
| Dec | 21.4 | 14.4 | 77mm | 8.5 |