The amount required to retire comfortably in Phuket varies depending on your lifestyle and financial needs. Generally, a monthly budget of ฿50,000-฿70,000 ($1,500-$2,100) can provide a comfortable retirement, covering housing, utilities, healthcare, and leisure activities. It's important to assess your personal situation, define your retirement goals, and consider factors such as healthcare requirements and inflation. Consulting with a financial advisor can help you develop a tailored retirement plan for your desired lifestyle in Phuket.