The best time to visit Kalachakra Gompa in Dirang, located in Arunachal Pradesh, India, is from October to April. During these months, the weather is most favorable as the monsoon rains have subsided and the harsh winter cold has not yet set in. This period allows for clear skies and a comfortable climate suitable for exploring the serene Gompa and immerse in its peaceful environment. The monsoon season, usually from May to September, is less ideal due to heavy rainfall, which can lead to landslides and difficulty in accessing the roads in the mountainous region of Arunachal Pradesh.
Apart from weather considerations, one should also be mindful of the Buddhist festivals that might coincide within the visiting period. Festivals like Losar, the Tibetan New Year, which occurs generally in February or March, can provide a unique cultural experience with religious ceremonies and festivities around the Gompa. However, please note that the festival times might attract more visitors, leading to a crowded experience. It is equally important to ensure that you have the necessary permits for travel in Arunachal Pradesh, as it is a protected area and visitors often require special permission to enter.