Avoiding the Jun-Aug monsoon is a good idea as not only will you experience slippery conditions, but cultural events are all but wiped out. Spring is the best time to go to Bhutan with tsechus in Gasa, Zhemgang, Punakha, Trashigang and Paro occurring during March. Thimphu’s festival to celebrate flowering rhododendrons is popular in April, with the May humidity leading to fewer visitors and better prices on accommodation. Autumn sees low rainfall and blue skies, perfect for hiking to Paro Taktsang and supping mugs of hot tea. Sep is a busy time for monks and dancers preparing for peak festival season in Oct-Nov
, with Thimphu and Gangtey very popular tsechus alongside the black neck crane festival in Wangdue Phodrang in Nov.
Looking for more info related to festivals in Bhutan? Read this: Five of the Best Bhutan Festivals