When to trek Manaslu: a season-by-season guide

The Manaslu Circuit is what the Annapurna Circuit was a generation ago: a full loop of an 8,000-metre peak, from subtropical river gorge to Tibetan-Buddhist high country, with a fraction of the traffic. Because it is a restricted area with one high crux — the Larkya La at 5,106 m — the calendar matters more here than on most treks. Choose the season well and the circuit is one of the finest walks in Nepal; choose it badly and the pass will make the decision for you.

Autumn (October–November): the benchmark

Post-monsoon autumn is the season the circuit was made for. The rains have washed the dust from the air, the Budhi Gandaki gorge is green and thundering, and the high country runs to weeks of stable, windless mornings. The Larkya La is usually snow-free or lightly dusted, every lodge on the route is open, and the villages are busy with the harvest. This is also the priciest window for the restricted-area permit and the busiest on the trail — though Manaslu's 'busy' remains a quiet lane compared to the Everest highway.

Spring (March–May): the flowering alternative

Spring is the connoisseur's second choice. The rhododendron forest between Soti Khola and Namrung is in full flower, days are warmer, and the trail is at its quietest outside winter. The trade-offs: haze builds from the lowlands as the season warms, softening the big views by late morning, and early March can still hold winter snow on the pass — we watch conditions and hold a contingency day for it. By April the crossing is normally straightforward.

Winter (December–February): for the experienced few

Early December can be glorious — cold, diamond-clear, empty. But once real snow arrives the Larkya La becomes a serious undertaking, and the simple lodges at Dharamsala, the staging post below the pass, close for the season, which stretches the crossing into a very long day from Samdo. We run winter departures only for strong parties who accept that the pass, not the itinerary, has the final word.

Monsoon (June–September): the season to skip

The Budhi Gandaki gorge is landslide country, and the monsoon is when it moves. Add leeches in the lower forest, clouded summits and washed-out road access to the trailhead, and there is no version of this trek we would sell in July. If your dates are fixed to high summer, rain-shadow routes like Upper Mustang are the better use of them. Late September is transitional: sometimes brilliant, sometimes still dripping.

Where the spare day goes

Every itinerary we run holds an acclimatization day at Samagaun (3,530 m), and the season decides how to spend it. The classic outing is the climb to Pungyen Gompa, a monastery ledge at about 4,000 m directly beneath Manaslu's east face — in autumn you get the summit sharp against blue from mid-morning; in spring, go at first light before the haze rises. The alternative is the walk past Birendra Lake toward Manaslu Base Camp, a bigger day to roughly 4,400 m that doubles as perfect acclimatization for the pass. In the cold months both trails can hold snow, which is its own kind of beautiful and its own kind of slow.

The trailhead drive moves with the calendar too. The road up the Budhi Gandaki is rough at the best of times; in and just after the monsoon it can lose whole sections, adding hours. Our autumn and spring departures use private jeeps and build the drive as a full day in both directions, so a slow road costs comfort rather than trekking days.

Permits move with the seasons too

Manaslu's restricted-area permit is priced by season: about US$ 100 for the first week from September to November, and US$ 75 from December to August, plus a daily rate beyond seven days, on top of the Manaslu and Annapurna conservation-area permits. The rules also require a minimum group of two trekkers with a licensed Nepali guide, arranged through a registered agency — covered in detail in our permits explainer, and handled by us on every departure.

Whenever you go, build in the acclimatization day at Samagaun and treat the Manaslu region as a place to linger rather than tick off. The circuit rewards the trekker who gives it a spare day almost as richly as the one who picks the right month.