The best time to visit Mussoorie is in the summer season from April to mid-July when the weather is ideal for sightseeing. This is also the peak season in Mussoorie and Dehradun. Another good time to visit Mussoorie is from September to mid-November to experience a breathtaking view of mist enveloped Himalayas. To experience snowfall, December to February is the best time to visit Mussoorie. Avoid visiting Mussoorie during the monsoon from 15 July to 15 September.