Cancer Council recommends all adults should check their skin and moles every 3 months. Those at risk should have a trained doctor examine them at least once a year. Melanomas can develop in-between visits to your skin cancer doctor, therefore you should know how to check your own skin and moles.
For those who have had any skin cancer, it is recommended to have their skin checked every 6 months for the first 2 years after any confirmed skin cancer, then every year after that.
Obviously, if you find any new lesion, or unsure about it, you need to come earlier.