As the rains descend, or have been descending for the past 24 hours, this is the time that the Buddhist monk retreats to the temple - NO to you cynics out there, not to avoid the rain - for a period of spiritual renewal. It is a time of study and meditation and the monks do not leave the temple grounds for a period of 3 months. I read that this was done to prevent the monks from trampling upon the growing rice when they visit the villagers.
One particular province in Thailand called Saraburi has a great many activities which are unique to this province and is referred to as the Tak Bat Dok Mai.
Information and photos from Thai Buddhist.com