Weather on Koh Phangan - what is the best season?

       Just few years ago in Koh Phangan everything was clear about the seasons - it was a high season with good weather and low season with rains or heat. But global changes come!
       Now its much more interesting. It was long rainy period in March (catastrophic in some areas of Thailand), then very hot, and now, in the low season, climate is perfect. What about rainy days (mansun?!) in the Autumn - nobody know...

sunny day on Phangan