Hi Rajdeep, I have tried to put the best of autumn in Darjeeling. You can decide if it works for you. October - November (Autumn in Darjeeling) Darjeeling again becomes a paradise for the tourists during these months. Unless the monsoon is stretched, this period becomes free of rains and showers. The mist or the fog which is so common during the monsoon, now starts clearing and the sky becomes clear. This is a great time to get views of snow-peaks. Temperature ranges between 18°C to 6°C and starts becoming colder. Tourists start pouring in and the hotel rates go back to the peak by first week of October. Hope this helps!