When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Phuket is roughly less than Victoria. You can assume this to be the case over the next 8 days.
Expect the weather to be around 34 °C on average in February. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Victoria is generally colder than in Phuket.