Although this is an Indoor Competition and the Whitlam Centre is Air Conditioned , it is summer in the Southern Hemisphere.
Day time temperatures in Sydney's west could range from 25 to 42 Celsius with humidity as high as 70% or as low as 15%.
You need to be prepared for these condition when outdoors.
The Whitlam Centre offers a public Aquatic facility, so bring your swim wear.
It is also a short car or train trip (about 50 minutes) to some of the beaches of Sydney.