Mountaineering in Sikkim has been introduced very recently. Government of Sikkim opened few alpine peaks for climbing as a new step to promote quality adventure tourism in Sikkim. Mountaineering season in Sikkim starts from April to June, and September to November, when daytime temperature at most altitude are quite comfortable. Above 4000m in the morning and evening the temperature will be considerably lower and can drop to around -20 degree Celsius. Usually day time temperatures are pleasant but nights are very cold above 5000m. Temperature are milder in spring but there can be more snow around. Mid April, June through last week of September, to first week of December, is the safest and the best time for climbing and mountaineering as well as for trekking in sikkim.
Sikkim shares a mountainous border with Nepal in the west, with China in the north and the east. All the early (pre-war) expeditions passed through Sikkim to cross overto Tibet on their way to attempt Everest. Francis Younghusband’s famous mission of 1904 to Tibet also passed through Sikkim.
Doug Freshfield was one of the early mountaineers to visit this area. His book “Round Khangchendzonga” is a classic record of all the areas in North Sikkim. In West Sikkim, peaks like Kabru (7338m) were climbed in 1935 by C.R. Cook. Others like Kokthang and Rathong were climber much later. Even now some peaks have not been climbed from Sikkim side, though ascents have been made from Nepal. Northern Sikkim consists of Zemu glacier and valleys from which rises the third highest mountain of the world – Khangchendzonga. Pual Baur and his German team repeatedly attempted to climb it via its eastern approaches before the Second World War. Ultimately the Indian Army Team made subsequent repeat ascents. There are many peaks around Khanchendzonga like Simvo and Siniolchu, which are tempting and an open invitation to climbers.
Further North is Pyramid peak, the last 7000er climbed by the Himalayan Association of Japan (HAJ) in 1993. In the vicinity are peaks like Jongsanng and Chorten Nyima. Pauhunri with the pinnacle of Donkhya Ri is one of the chief attractions on the eastern side. There is a lot climbers can do in the Sikkim Himalayas.
Positioned at the imposing and surreal location of North Sikkim, Brumkhangse Peak has been opened for expedition since 2005. It is a moderate grade of trek that is isolated from other major peaks of Sikkim.
Altitude of Tenzing Khang is 6010 meters and is closed to Jophnu and is one of the most famous climbing Peak in west Sikkim. As usual this trek follows the whole route of Famous Dzongri- Goechela Trek including Tshoka.
An exquisite peak in close proximity to Rathong Glacier, Frey Peak lies near the Kabru sister of peaks boasting two imposing summits i.e. Kokthang and Rathong Peak. The trek involves passing through the absorbing Frey Glacier.
Mount Jopuno is a prime attraction among the mountaineers from all around the blue planet. A trekker can relish the mesmerizing views of some of the most wonderful mountains of Sikkim Himalayas.