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Weather in Bhutan

The southern part of Bhutan is tropical, and in general the eastern region of the country is warmer than the central valleys. However, bear in mind that the higher the altitude, the cooler the weather, and that with a brisk wind blowing down off the mountains, even a low-lying valley can become quite chilly. The valleys of Punakha, Wangduephodrang, Mongar, Trashigang and Lhuentse enjoy a semi-tropical climate with cool winters, whilst Paro, Thimphu, Trongsa and Bumthang have a much harsher climate, with summer monsoon rains and winter snowfalls which may block passes leading into the central valleys for days at a time. Winter in Bhutan (mid-November till mid-March) is dry and sunny for the most part with daytime temperatures of 16-18C (60-65F).

The spring season (mid March to mid June) offers warmer temperatures gradually warming to 27-29C (80-84F). The monsoon usually arrives in mid-June, with light rain falling mainly in the afternoons and evenings. At the end of September, after the last of the big rains, autumn suddenly arrives and is a magnificent season for trekking until November.

Average temperature (Maximum/Minimum in Degree Celsius) in Bhutan

Paro Thimphu Punakha Wangdue Trongsa Bumthang Mongar Trashigang
January 9.4/-5.8 12.3/-2.6 16.1/4.2 17.0/4.3 13.0/-0.2 10.8/-5.1 15.5/8.2 20.4/10.5
February 13.4/1.5 14.4/0.6 19.6/5.3 19.0/7.8 13.9/0.4 10.0/-1.4 15.9/8.3 21.7/11.5
March 14.5/0.6 16.4/3.9 21.2/9.2 22.8/10.4 16.7/4.4 16.2/3.5 20.0/11.6 24.8/14.4
April 17.6/4.6 20.0/7.1 24.4/11.9 26.2/12.9 20.1/6.6 18.7/3.9 22.8/14.0 28.3/17.0
May 23.5/10.6 22.5/13.1 27.2/14.8 29.1/17.7 21.0/11.6 21.3/9.5 25.1/17.4 30.0/20.6
June 25.4/13.1 24.4/15.2 31.2/19.5 29.2/20.1 22.2/13.6 22.5/13.5 26.1/19.5 30.7/22.6
July 26.8/14.9 18.9/13.4 32.0/21.6 18.4/16.2 25.3/15.3 14.1/10.9 16.1/15.8 31.5/23.1
August 25.3/14.7 25.0/15.8 31.4/19.8 29.1/20.0 23.8/15.0 23.0/13.7 25.4/19.6 30.2/22.7
September 23.4/11.7 23.1/15.0 29.9/20.0 27.5/19.1 22.6/14.2 21.6/12.1 24.7/19.4 30.0/23.9
October 18.7/7.4 21.9/10.4 27.8/18.9 26.1/14.7 21.8/11.7 19.5/5.9 22.7/15.8 29.1/17.7
November 13.9/1.4 17.9/5.0 22.3/13.0 22.6/9.6 19.8/6.4 16.1/-0.5 19.9/11.2 26.1/13.6
December 11.2/-1.7 14.5/-1.1 15.0/7.9 19.1/6.3 18.2/2.5 12.3/-2.3 15.7/9.5 23.0/11.6