Bhutan’s climate varies with altitude. The southern part bordering India has tropical with hot and humid climate, while the Himalayan mountains in the north are snow-capped almost all year round. Unless you are trekking, most of your time will be spent in the central Bhutan.
There are two most favourable seasons to visit Bhutan, both of which offer an awesome timing to enjoy festivals and trek. The first is in the Spring (March to May). The days are warm and the environment around is serene and fresh. Daytime temperatures in the main centre regions are around 17 to 22 degree Celsius , increasing through the season. It will go up to 28 to 30 degrees, in the low-lying areas. But nights can still be cool at this time of year, especially early in the season.
The other wonderful time is Autumn (September to November), when there is much lesser rain. These months are blessed with clear blue sky providing a breathtaking photographic and scenic views and sights. The temperature will be between 20 and 25 degree Celsius.
Summer (June to August) is a monsoon season, which means heavy rains especially in the south. If you love the rain, this is the time for you. We don’t discourage travel during this season, because it is a good time to visit Paro. Punakha and other areas in western Bhutan, as long as you are comfortable getting wet. The summer temperatures will be from 25 to 30 degree Celsius.