Geelong in September
September is right in the heart of spring for Geelong, and the weather has a definite personality this time of year.
Daytime highs average 16.7 degrees, dropping to 8.6 degrees overnight. That's a 8-degree swing between day and night. It's cool but manageable. A jumper handles most of it.
September is 3.3 degrees cooler than Geelong's yearly average.
You're looking at 43mm of rain across 10 days in a typical September. Light enough that it won't ruin your plans.
Solar exposure averages 12.7 MJ/m2 per day in September, with UV levels in the high range. Sun protection is still a good idea, especially around midday.
At 4.6/10 on the Comfort Score, September is middle of the road.
For your suitcase: layers you can peel on and off, 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
- Extra layers for chilly nights
- A waterproof jacket or compact umbrella
Coming From Overseas?
How September in Geelong 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
Geelong's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 24.2 | 14.7 | 49mm | 10.0 |
| Feb | 26.4 | 13.9 | 1mm | 9.8 |
| Mar | 25.3 | 13.2 | 16mm | 9.9 |
| Apr | 18.3 | 10.0 | 66mm | 5.4 |
| May | 16.8 | 8.6 | 36mm | 4.4 |
| Jun | 13.6 | 6.3 | 16mm | 2.2 |
| Jul | 12.8 | 6.2 | 56mm | 1.0 |
| Aug | 17.1 | 7.8 | 38mm | 4.7 |
| Sep | 16.7 | 8.6 | 43mm | 4.6 |
| Oct | 19.5 | 9.4 | 63mm | 7.2 |
| Nov | 23.2 | 12.0 | 84mm | 9.8 |
| Dec | 25.7 | 13.4 | 34mm | 9.7 |