Which months are best for visiting the Kuari PassTrek?

The Kuari Pass Trek is basically a winter trail. 

This hiking trail is completed in the winter months when the mountains are laden with snow. 

Hence the best months to cover this trail  

 September, October common November, December, January, February, March, April, May and June. 

Thus you can visit this hiking location From anywhere between September to June. 

On the first day you have to travel between your house to Dehradun.