The Gaumukh Glacier, one of the primary sources of the Ganges River, is nestled in the beautiful Garhwal Himalayas in Uttarkashi district of Uttarakhand, India. The most favorable time to undertake a trek to Gaumukh is from mid-May to June and then again from September to October. During these months, the weather remains relatively stable with minimal precipitation, offering clearer skies and better visibility of the beautiful terrain. The pre-monsoon summer period is especially ideal, as the days are pleasantly warm, and the chill in the air is manageable during nights. This is the time when the snow from winter has melted, and the rugged beauty of the glacier is in full view.
However, it is important to note that the monsoon months, typically from late June to August, are not recommended for visiting Gaumukh due to the increased risk of landslides and the routes being prone to heavy rains and potential flooding. Winter visits, which span from November to early May, are also challenging, as the region becomes extremely cold and the paths are covered in snow, making the trek perilous. If you're keen on a quieter experience with fewer fellow trekkers, September and October are ideal, while May and June are typically more popular and can be slightly crowded. Prior permits are required for the trek, and one must also be prepared for sudden weather changes that can occur in the high altitudes of the Himalayas.
