Spring from March to May and autumn / fall are the best time for climb of Island Peak and other adventure. The autumn begins from September to November with winter season starts from December to February.   The best time for treks and peak climbing is spring and autumn that is from March to May and September to November. The high times for trekking and other adventures, interested climber can enjoy Island Peak climb in winter time also. Autumn and winter with freezing temperatures early morning, late afternoon and night time. But most days are fine and clear with sunshine for walks and climb, but short days due to limited sunlight hours. Can get snow-fall sometimes during spring, autumn and winter.