June marks the start of summer and sees the arrival of monsoon season across Bhutan, with heavy rains and winds sweeping up from northern India. Sightseeing is still possible, as showers mostly occur in the late afternoon and overnight, but trekking conditions are far from ideal.
By late June, Bhutan’s monsoon season is in full swing. Rainfall tends to be at its heaviest later in the day though, so there is still scope for exploring during the morning - just be prepared to encounter the occasional downpour. The monsoon rains particularly affect southern regions of the country; in the north the main problem is visibility. Low-hanging cloud up in the mountains disappointingly obscures the Himalayan views a lot of the time. There is not much sun about during June, but the weather is warm, and the scenery undeniably lush. Many parts of Bhutan will be uncomfortably humid in June, with average daytime temperatures ranging from around 22°C in central areas such as Bumthang and Trongsa to almost 30°C in the Punakha Valley. Due to the rain, trekkers will find it difficult to tackle many trails during June, especially in more remote parts of the country.