This festival generally takes place in the month of April
This festival generally takes place in the month of July
The best time to come to Mae Hong Son is from November to the end of April. July and August are the rainiest months but there is no time when it is particularly unrecommended to go to Mae Hong Son.
We are one week away from Chinese New Year (January 25th, 2020) and despite a lot of mail and detailed information requests from various Tourist Offices in several cities, I unfortunately did not get all the details that I would have liked...