March and April are heazy with views becoming upscured. However, this is the best time of year for seeing both wild life and blossoming of the himalayan flora. May is very hot an quite dusty. Trekking during the monsoon can be recommended only for the most experienced. The climate is hot, humid and uncofortable at lower elevations.
Many trails become treacherously sleepery and obsucres mountain views for much of the time.
Weather in the late september is unpredictable, but trails are much less crowded and hence more pleasant. Trekking Permits Your visa to enter Nepal effectively allows you to travel throughout the Terai and the Kathmandu and Pokhara Valleys. A trekking permit is required for all Himalayan destinations. Kathmandu office deals with application for all areas ,while the Pokhara office issue permits for the Annarpurna region only. Immigration Office opens from monday to friday.