November - March and July - August are the best months to visit Chamoli. However, this place experiences fantastic weather throughout the year. If your purpose to visit Chamoli was seeing the Valley of Flowers
as well, the best time to visit would be July - August.
The summers are pleasant with temperature ranging between 15 to 30 degrees Celcius. The area receives snowfall in the winter, temperatures dropping to freezing point. However, the monsoon season experiences excessive rain causing the area to be prone to landslides.