Best Time to Trek in Nepal, Season by Season

The best time to trek in Nepal is autumn (late September to November), when the monsoon has cleared, skies are at their sharpest and trails are dry and firm. Spring (March to May) is the close second, swapping clear-day reliability for rhododendron blooms and milder nights. Winter rewards low-altitude treks with quiet trails and crisp visibility, while the monsoon is best spent on the dry rain-shadow routes north of the main Himalaya. This guide collects season-by-season and trek-specific timing so you can match your route to the weather.

The short answer

Most trekkers should aim for October to early November or March to April. These two windows give the safest pass conditions, the clearest peaks and the most dependable teahouse services, and they are when guides, flights and lodges run at full capacity. If your dates are fixed outside them, you still have good options: winter for short, lower treks, and the monsoon for rain-shadow valleys. The right choice depends on your route, your altitude tolerance and whether you prioritise clear views, warmth or solitude. Start with the overview in best time to trek in Nepal, then drill into your specific route below.

Choose by season

Each season behaves differently with altitude, so read the dedicated guides before booking. Autumn trekking in Nepal explains why October is so coveted, while spring trekking in Nepal covers the bloom calendar and the haze trade-off. Still undecided between the two? Our head-to-head on spring versus autumn trekking lays out the differences in weather, crowds, temperature and views.

For the cold months, winter trekking in Nepal shows which trails stay open and how to handle freezing nights and short days. And for the wet months, trekking in the monsoon season is honest about leeches, landslides and clouded summits, while rain-shadow treks for the monsoon points you to the arid Trans-Himalayan valleys that stay walkable when the rest of the country is soaked.

Choose by trek

Timing varies enough between routes that the famous circuits deserve their own pages. The Khumbu has its own quirks — pre-monsoon snow, autumn flight reliability and bitter winter cold — all covered in the best time to trek Everest Base Camp. On the other side of the country, the best time for the Annapurna Circuit explains the Thorong La pass window and how the circuit's rain-shadow tail near Manang and Mustang extends the season.

How to plan around the seasons

Season	Months	Conditions	Best treks
Autumn (peak)	late Sep–Nov	Clear, dry, stable	All circuits, base camps, passes
Spring	Mar–May	Warm, hazier, blooms	Annapurna, Everest, Langtang
Winter	Dec–Feb	Cold, clear, quiet	Poon Hill, Everest View, Mardi
Monsoon	Jun–early Sep	Wet, leeches, cloud	Upper Mustang, Dolpo, Nar Phu

Whatever window you pick, altitude is the constant risk. Read our altitude sickness in Nepal guide and plan kit, permits and pacing with the Nepal trekking guide. For the wider picture beyond trekking, the best time to visit Nepal covers cities, safaris and festivals too.