Nepal trekking season is most important for a safe, successful, and pleasant journey for mountain trekkers. The dry season September to May suits trekking tours. Late September, October, and November remain the best trekking season in Nepal. Late February, March, April, and May recognized the next important trekking season. Autumn and spring season is worth for Himalaya trekking, snow-clad peaks, sunrise, sunset view, photography, flora, fauna.
Nepal hiking season begins after the monsoon (14th June to 14th September). Mid-September, October, and November stay excellent weather, blue sky, greenery, clear mountain. The cool nights and perfect day temperature presents your hiking more interesting. This season falls Dashain, Deepawali, Chhat festival, crop harvesting in Nepal. Moon and galaxy appear together during the bright fortnight. Government offices, schools, colleges usually close during the Hindu festivals. The trekking guide, porter, Serpa will be busy. Hotel reservations, airlines tickets can be full in the high tourist season.
February, March, April, and May are the next best trekking season in Nepal. Mountain weather stays warm, breezy with the Himalayas view. The Spring season allows colorful rhododendron, orchid flowers, birds to watch. National parks and conservation areas appear a wild garden with spectacular mountain views. In April and May, trekkers meet expedition groups along with Everest, Annapurna, and Makalu base camp trek routes.
Nepal trekking season is most important for comfortable hiking, observing snow-capped peaks, wildlife, plant, festival. Nepal trekkers must know the weather forecast before the mountain pass. Unfortunately, several people were killed by snowstorms in 2014 in Annapurna and Everest Region. Proper clothes, medicine, food, professional guide, porter are essentials for the trekking journey. Hotel booking in the high season can be difficult in Kathmandu, Pokhara, and the mountain. Book your hotel earlier if possible. International flights to Kathmandu can be full.
Hiking and Trekking in the off-season
Nepal’s diverse topography supports trek even in the off-season. Hiking and Trekking in December, January, February (winter season) can be possible in low altitude areas. Winter temperature drops below zero in the Himalayan base camp and high pass. Heavy snowfalls close the base camp and mountain passes such as Cho La (5420 m) in the Everest region, Thorung La (5416 m) in the Annapurna region, Ganja La (5122 m), and Lauribina La (4610 m) in the Langtang region, Larkya La (5106 m) in Manaslu region, Dhampus Pass (5122 m) in Dhaulagiri Round trek. Winter treks are arranged only at low altitudes near Kathmandu and Pokhara valley.
Hiking in June, July, August (summer/rainy season) remains slippery without a mountain view. The monsoon season in Nepal receives heavy rainfall with wet and warm weather. The mountain view will be rare with clouds and fogs during the summer. Leech grows in Annapurna and Langtang trekking routes. Trekking trails encounter landslides, falling rock, and slippery. However, monsoon trekking is possible only in the rain shadow area of Nepal, Upper Mustang, Jomsom, and Dolpo Region. A few days of trekking and hiking to the foothills of Annapurna, Langtang, Everest, Kathmandu, Pokhara valleys are always possible for four seasons. Diverse landscapes with different elevations suit Nepal hiking and trekking even in June, July, August month.
The temperature of trekking towns
December, January, and February – Maximum 6 to 9° Celsius and Minimum 6 to -9° Celsius
March, April, and May – Maximum 9 to 14° Celsius and Minimum -3 to 4° Celsius
June, July, and August – Maximum 15 to 16° Celsius and Minimum 6 to 8° Celsius
September, October, and November – Maximum 9 to 15° Celsius and Minimum 3 to 6° Celsius
December, January, and February – Maximum 12 to 13° Celsius and Minimum -1 to -2° Celsius
March, April, and May – Maximum 20 to 23° Celsius and Minimum 2 to 7° Celsius
June, July, and August – Maximum 24 to 25° Celsius and Minimum 12 to 14° Celsius
September, October, and November – Maximum 15 to 25° Celsius and Minimum 1 to 11° Celsius
December, January, and February – Maximum 19 to 21° Celsius and Minimum 2 to 3° Celsius
March, April, and May – Maximum 25 to 30° Celsius and Minimum 7 to 14° Celsius
June, July, and August – Maximum 28 to 29° Celsius and Minimum 18 to 19° Celsius
September, October, and November – Maximum 23 to 28° Celsius and Minimum 7 to 14° Celsius