Nepal Weather & Trekking Seasons
Nepal’s main trekking season runs from mid September through to May, with each season offering different conditions, temperatures and experiences.
Autumn (Mid September to Mid December)
Autumn is the most popular time to trek in Nepal. After the monsoon, the air is clear and dust-free, offering excellent mountain views, particularly from mid October through November when conditions are typically stable with clear skies, warm days and cold nights. At lower elevations such as Kathmandu, daytime temperatures range between 15–25°C (59–77°F), while above 3,000 metres (9,840 ft), daytime temperatures generally sit between 10–20°C (50–68°F), becoming colder with altitude and significantly cooler on exposed passes above 5,000 metres (16,400 ft). Nights become progressively colder through November and into December, often dropping to 0 to -10°C (32 to 14°F) or lower at higher camps. This season offers the clearest views and most reliable trekking conditions.
Winter (December to February)
Winter trekking brings clear skies, quiet trails and cold conditions. Days are often bright and crisp with excellent visibility, however temperatures drop significantly, especially at higher elevations. Snowfall is common above 2,500 metres (8,200 ft), and high passes can occasionally be affected by winter storms. Lower elevation treks remain very enjoyable and far less crowded. Across all elevations, particularly above 3,000 metres (9,840 ft), nights can be very cold and frequently fall well below freezing. This season suits travellers seeking fewer crowds and clear mountain views, provided they are prepared for colder conditions.
Spring (March to May)
Spring is a popular trekking season known for warmer temperatures and colourful landscapes. March is generally cool and dry with clear mornings and some afternoon cloud, while April and May bring warmer conditions and occasional afternoon showers as the monsoon approaches. At lower elevations, temperatures can reach up to 30°C (86°F), while above 3,000 metres (9,840 ft), daytime temperatures typically range between 5–20°C (41–68°F). Rhododendrons and wildflowers bloom across many regions during this time. Late April and May also mark the Himalayan mountaineering season, when expeditions gather on peaks such as Everest and base camps can become active. Outside these periods, base camps are often quiet and may appear empty. This season offers a balance of warmer weather and scenic variety.
Monsoon (Mid June to Mid September)
The monsoon brings sustained rainfall across much of Nepal, particularly in eastern and central regions. Trails can be wet, muddy and cloudy, and trekking is generally not recommended in most areas during this time. However, rain-shadow regions such as Upper Mustang and Dolpo remain viable options. During these months, conditions are also excellent in destinations such as Ladakh, Tibet, Central Asia and Pakistan. This season is best suited to alternative trekking regions rather than the main Nepal Himalaya.