The most crucial decision you must make with your Nepal trek is the choice of season. The timing determines all the weather and visibility conditions, as well as the trail conditions and crowds. This is a simple guideline to follow to select the best time.
Autumn (Mid-September to November): The Premier Season.
The Verdict: The best and the most frequent time to hike.
Close to monsoon, the autumn is steady and dry with crystal Mountain clear skies. Let those who like warm days and cool nights, Treasured are the days, And cold below the cold nights. Trails are well maintained. Major festivals such as Dashain and Tihar are also incorporated into this season, and it provides great cultural experiences.
Best Suited: All, and first time. Perfect on the traditional trails, such as the Everest Base camp and the Annapurna Circuit.
Note: It's peak season. Make bookings and tea houses early.
The Spring (March to May): the Season of Blooms.
The Verdict: It comes in a near close second, which is known to have wildflowers and warmer temperatures.
The weather of spring is gradually becoming warmer. It may be foggy in the morning, but the clouds are generally cleared in the afternoon. The most spectacular detail is the magnificent bloom of rhododendron forests that turn the picture and the hillsides into red and pink.
Best For: Photographers and nature lovers. Ideal in the Annapurna Sanctuary trek.
Remark: It is a very popular season; still, it is advisable to plan.
Winters (December to February): To Alone & Cloud free skies.
The Verdict: It is tough but well rewarded to the ready trekker.
Snow brings the best skies and peaceful and quiet paths. Nevertheless, the temperatures are considerably lower particularly at night and higher than 3,500m. Snow can block high passes.
Best On: Well experienced and equipped trekkers and on low altitude routes such as Poon hill and Langtang valley. Not for high passes.
Note: It is important to have a fine cold weather sleeping bag and down jacket.
Summer/Monsoon (June through Mid-September): The Green Season.
The Verdict: Tough in most of the areas, but perfect in special rain-shadow areas.
Monsoon causes one daily rain, humidity, leeches and seldom cover clouds on normal routes. Nevertheless, the sceneries are very lush and lively.
The Exception: It is the most opportune moment to walk in the rain-shadow areas to the north of the Himalayas, such as in the Upper Mustang and the Lower Dolpo which are not wet.
Best: Adventurers that want to explore the unusual, dry terrain of Mustang. These are not to recommend classic teahouse treks.
