The best time to visit to Bhutan is during the spring months of march to may .Autumn season September to December is also the ideal time to visit Bhutan .
October to December is the ideal time to visit Bhutan as the air is clear and fresh with sunny skies. January and February are colder, but from then until April the climate remains dry and pleasant and in late spring the famous rhododendrons bloom spectacularly, flooding the valleys with colour.