Geelong in September
September in Geelong is peak spring, and the weather reflects it. You're looking at average daily highs of 16.7 degrees.
Expect the mercury to hit around 16.7 degrees during the day and settle at 8.6 degrees after dark. It's cool but manageable. A jumper handles most of it.
September is 3.3 degrees cooler than Geelong's yearly average.
Rainfall in September averages 43mm over about 10 days. That means roughly a 33% chance of rain on any given day, pack a compact umbrella just in case.
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.
The Comfort Score is 4.6/10 for September. It's fine, but not the highlight of the calendar.
Packing tip: bring layers you can peel on and off, 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
- Layered clothing for mild to cool conditions
- A warm jumper or fleece for cool mornings and evenings
- 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 |