If you visit in between Middle of September to Early November then you can enjoy cold environment..
If you visit in between December to January then you can enjoy freezing Manali..
and if you visit in Summer then you can enjoy the natural beauty of Himachal.. I recently made a plan for Manali in the month of December.
Its depends on you, what you want from your vocations..... if you want to enjoy all adventurous activities like paragliding , River rafting etc you should go in the month of April to September and best time to visit in summer in june to july . on ther hand if you would like to see snow covered mountains , heavy snow, amazing snowfall , so you should go in the month of November to march.. you will see the heavy snow and you will.also enjoy snow based activities...
Hello, Manali is a perfect place for a quick weekend getaway. You can reach there by road (car/bus) or simply take a flight till Bhuntar and then hire a cab till Manali. Since Winter season is coming close, I will suggest you to visit Manali from mid-December to February if you want to enjoy snow. Manali can be visited anytime of the year. Just avoid going during peak months such as May-July and long weekends/holidays.
If you want to enjoy in snow but not to be in chilled climate, then summer is the best time to visit (around May and June). Rohtang pass is opened in this season and you will get chance to play in snow. But the crowd in summer is too much, so you need to start early in the morning to visit Rohtang pass else you will get stuck in traffic.