Bhutan has four distinct seasons, should be taken of the predictable weather patterns before making decision when to visit. Remember even predictable weather can vary dramatically in different areas and in 24 hours periods, the southern plains are warmer than higher central valley.
Spring is arguably the most beautiful time of the year in the kingdom, tour operator waits to bud out the willow, blossom the Rhododendron with the spectacular flaming red, pink and white on the hills. This is the best time to visit for trekking. Monsoon begins with the heavy rain in south and when the north inhabited nomads return to the higher plains to tend their yak. The end of monsoon is also a best time to visit, where the days are filled with glorious cobalt skies and warm weather.
The autumn months of September to November bring a shorter days and cooler nights. The days remain lovely with crisp clear skies. Views over the high Himalayas are usually only possible from September to March. Come the end of November and the weather takes on its winter. The days remain warm and the nights turn cold, clear skies bring with them cold weather bit it’s also the best time of the year to view the snow-capped peaks of the Himalayan.