For Visitor visa (Subclass 600) Tourist Stream, the official processing time is around 17 to 28 days. The period depends upon the completeness of your document. It will be longer if you need to undergo a health examination.
However, and based on personal experience, you can receive your visa in less than 17 days. Some even reported to have received it within a week.
Given the above, you should allow sufficient time and enough gap from your visa application to your actual date of departure.
Go back to the main article: How to Apply for an Australian Tourist Visa: A Complete Guide for Filipino Tourists