The best time to visit Bhutan is from March to May and from September to November
Most places in Bhutan that you will visit on jeep tours are situated between 1800 and 2900m. A mild mountain climate prevails here, with considerable differences between day and night. During the months of March, April, May, September, October and November, the days are usually sunny with midday temperatures between 15 and 25 degrees Celcius and pretty cool nights. At some high-altitude places, night frost may occur between December and February. On high treks, temperatures are obviously lower with frost occurring any time of the year above 4000m.
Although monsoons occur in the summer months (June-August), precipitation is much less than in India. Because of the altitude, it never gets uncomfortably hot. However, visibility may be less than in spring and autumn, which means that you miss the views of the snow-clad Himalayas.
Best time to visit
March, April, May, September, October and November are the best months to visit Bhutan. Autumn has the advantage of the clearest views and many tsechus (Buddhist festivals) to choose from, whereas spring offers the exuberance of the Himalayan spring with flowering rhododendron forests. Bhutan can be reached by road and air all year round.