It is possible to travel to Bhutan all the year round except in the months of July and August when it is little wet for tour. Spring (months of March, April & May) and Autumn (months of September, October & November) are the best seasons for travel to Bhutan as there are festivals in different places in these months. Spring season is warmer with flowers blossoming around. Autumn although is colder in morning and evening, days are warmer with clear blue sky for great mountain sceneries.
Whole year round
High Season: March-May and September-November
Low Season: December-February and June-August