The best time to go to Croydon, Victoria, Australia, depends on what you'd like to do, but generally, the shoulder seasons of autumn (March to May) and spring (September to November) offer the most pleasant weather for exploring.
During autumn, the weather is typically mild and dry, with average temperatures ranging from 12°C to 23°C. This period is ideal for outdoor activities and visiting local parks without the intense heat of summer. You'll find comfortable conditions for exploring the Dandenong Ranges or enjoying the local markets.
Spring provides similar comfortable temperatures, usually between 10°C and 20°C, and the region bursts into bloom, making it very picturesque. It's an excellent time for nature walks and enjoying the gardens in the wider Yarra Valley region.
Summer (December to February) can be quite hot, often exceeding 30°C, which might be less comfortable for some outdoor activities, though it's great for those who enjoy warm weather.