Monsoon treks in Nepal: the complete guide
From June to August, the South Asian monsoon brings rain to most of Nepal. Trails in the middle hills turn muddy, leeches appear in the forests, and the mountains often hide behind cloud. But not everywhere: north of the main Himalayan range lie rain-shadow regions such as Upper Mustang, Nar Phu and Dolpo, which receive little rain and are at their best in summer. With the right route, monsoon trekking in Nepal can be quiet, green and spectacular.
This guide explains where to trek in the monsoon, what to expect, and how to prepare.
What is the monsoon like?
The monsoon usually arrives in early to mid-June and retreats by late September. Rain often falls in heavy afternoon or night-time showers rather than all day, with clearer mornings. The hills are lush and green, rivers are full, and waterfalls pour off every cliff. The main challenges are mud, leeches, landslides on roads, and flight delays, especially to Lukla.
Rain-shadow treks: the best monsoon choice
Upper Mustang
Behind the Annapurna and Dhaulagiri ranges, Upper Mustang is a high desert of red cliffs, sky caves and Tibetan villages. It gets little rain, and the summer months are ideal. The colourful Tiji festival in Lo Manthang takes place in May. See our Upper Mustang trek and jeep tour, and the Upper Mustang guide.
Nar Phu and the upper Annapurna Circuit
The upper part of the Annapurna Circuit, beyond Manang, and the hidden Nar Phu valley are partly in the rain shadow. The lower sections can be wet, but the high valleys are much drier.
Dolpo
In the far west, Dolpo is one of the driest and most remote regions of Nepal. Shey Phoksundo Lake is a beautiful summer trek.
Tibet and Kailash
Across the border, the Tibetan plateau has its main travel season in summer; see our Kailash Mansarovar Yatra.
Other monsoon options
Short treks near Kathmandu and Pokhara are possible in the monsoon if you don't mind rain and some leeches. The Kathmandu Valley's temples and cultural sites can be enjoyed all summer, and Chitwan is quieter, though some safari activities are limited.
Challenges and how to manage them
- Landslides: roads can be blocked; build spare days into your plan.
- Flight delays: flights to Lukla and Jomsom are often cancelled in cloud; allow buffer days.
- Leeches: common in forests between about 1,000 and 3,000 m. Wear long socks and use salt or repellent.
- Views: mornings are often clear; start early.
What to pack
- A good waterproof jacket and trousers, plus a pack cover
- Quick-dry clothing
- Waterproof boots with good grip, and sandals
- Leech socks or long socks, and insect repellent
- Dry bags for electronics
Advantages of trekking in the monsoon
- Very quiet trails and lodges
- Lush green landscapes and wildflowers
- The best time for Upper Mustang and Dolpo
- Off-season prices on hotels
Book a monsoon trek with Himalayan Hiking
We'll help you choose a route that suits the season. Read our monsoon trekking guide and our guides to July and August, and contact us to plan your trip.