Phillip Island in September
September is right in the heart of spring for Phillip Island, and the weather has a definite personality this time of year.
The average daily maximum is 15.6 degrees with overnight lows of 10.6 degrees. It's cool but manageable. A jumper handles most of it.
At 15.6 degrees, September sits 2.7 degrees below the annual average of 18.3 degrees.
You're looking at 55mm of rain across 16 days in a typical September. Light enough that it won't ruin your plans.
Sunshine-wise, September delivers around 13.1 MJ/m2 of daily solar radiation. UV sits in the high category. Sun protection is still a good idea, especially around midday.
September scores 3.4/10 on our Comfort Score. It's the tough end of the year weather-wise.
For your suitcase: a decent jumper or fleece, and serious sun protection.
Check the data table below for the full picture, or compare Phillip Island 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
- Proper rain gear for frequent showers
Coming From Overseas?
How September in Phillip Island stacks up against major cities around the world.
About 4 degrees cooler and considerably wetter.
About 10 degrees cooler and considerably drier.
About 11 degrees cooler and considerably drier.
How September Compares
Phillip Island's monthly climate at a glance. September is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 22.0 | 16.3 | 53mm | 9.1 |
| Feb | 23.5 | 16.4 | 7mm | 10.0 |
| Mar | 22.3 | 15.9 | 14mm | 9.7 |
| Apr | 17.4 | 13.4 | 88mm | 4.1 |
| May | 16.3 | 11.6 | 29mm | 3.9 |
| Jun | 13.5 | 9.8 | 30mm | 1.9 |
| Jul | 12.7 | 8.8 | 84mm | 1.0 |
| Aug | 16.0 | 10.0 | 39mm | 3.7 |
| Sep | 15.6 | 10.6 | 55mm | 3.4 |
| Oct | 17.8 | 11.7 | 67mm | 5.9 |
| Nov | 20.8 | 13.7 | 65mm | 8.4 |
| Dec | 21.8 | 15.1 | 82mm | 8.9 |