Best time to trek Nar–Phu and Annapurna Circuit

If you’re planning a trek in Nepal, two names likely top your list: the Nar Phu Valley trek and the Annapurna Circuit. Both are renowned for their stunning Himalayan scenery, rich cultural heritage, and high-altitude challenges. To enjoy these treks to the fullest, timing is everything. The difference between trekking in October versus January can mean either crisp mountain views and busy trails or closed passes and deserted guesthouses.

When is the best time to trek the Nar Phu Valley and Annapurna Circuit? Follow Alice will explore the seasons, compare the two treks, and map out what you can expect month by month. If you're still unsure about anything, schedule a call with our team.

The traditional stone settlement of Nar village, a hidden gem on the Nar–Phu Valley and Annapurna Circuit.

Learn more: How much does it cost to trek the Annapurna Circuit cost?

The Nar Phu trek takes you into one of the most remote and untouched valleys in the Annapurna region. Tucked away north of Manang, the valley combines raw Himalayan scenery with authentic Tibetan-influenced culture. Trekkers cross sky-piercing suspension bridges, stroll through medieval stone villages, and eventually take on the Kang La Pass (5,320 m) with panoramic views of the Annapurnas.

Trekker crossing Kang La Pass with views of the Nar Phu Valley in the Annapurna region, Nepal.

Nar Phu lies in the rainshadow of the Annapurna range, and it receives less rainfall than many parts of Nepal. This makes it possible to trek here during the summer monsoon, something you cannot say for most other trails.

Here’s how each season shapes the Nar Phu experience:

Spring is one of the best times for the Nar Phu Valley trek. Temperatures are mild, days are long, and trails burst into life with blooming alpine flowers. Guesthouses that shut during the winter reopen, and the valleys regain their lively atmosphere. Wildlife is also more active, adding to the sense of renewal.

The main downside? Crowds. Many trekkers choose spring, so accommodations often fill up quickly. Pre-booking is a must.

Green terraced fields and traditional stone houses in Nar village, coming alive with fresh colours in the spring season.

Autumn rivals spring as the main trekking season. The monsoon clears the air, leaving clear blue skies and crisp mountain views. Trails are dry and safe, the pass is accessible, and the weather is reliably stable.

This is also Nepal’s festive season, which means major celebrations like Dashain and Tihar bring an added cultural richness to the trek. But as in spring, expect busy trails and full guesthouses.

Nepali people celebrate the Dashain festival.

Nar Phu in winter is an adventure for only the hardiest trekkers. Temperatures plunge well below freezing, the Kang La Pass is often blocked by heavy snow, and many villagers migrate down-valley, shutting their homes and guesthouses.

Trekking is possible with a professional guide like Follow Alice and proper cold-weather gear, but it’s a serious undertaking. That said, the reward is solitude and spectacular snowbound landscapes.

View of snow-capped peaks on the Annapurna mountain range.

Unusually, summer is still a practical season for Nar Phu. Thanks to the rainshadow, rainfall here is far less than in neighbouring valleys. The landscapes turn lush and green, and the trails are far quieter.

However, getting there is the biggest challenge. The road from Besisahar is prone to mudslides and landslides during the monsoon, making access unpredictable. Carrying rain gear is essential, even if rainfall is lighter on the trek itself.

A landslide interrupted the road in the Kali Gandaki valley in Nepal.

Infographic of the best seasons for the Nar–Phu and Annapurna Circuit trek.

The Annapurna Circuit is one of the most famous treks in the world, circling the Annapurna Massif and crossing the Thorong La Pass (5,416 m). The trail offers a diversity of landscapes from subtropical forests and rice terraces to alpine deserts and windswept high passes. You’ll also experience the beautiful cultures of Gurung, Thakali, and Tibetan-influenced communities along the way.

Trekkers walking on the footpath in the Himalayas on the Annapurna Circuit trek.

Due to its scale and varied altitudes, the Annapurna Circuit is particularly sensitive to seasonal changes. Here’s how it plays out:

Spring is an excellent season for the Annapurna Circuit. From late February, days grow longer and warmer, offering pleasant trekking conditions. By March and April, rhododendrons paint the hillsides pink and red, making the trek especially scenic.

May remains possible, but it brings increasing heat at lower altitudes and the first signs of pre-monsoon rainfall. If trekking in May, come prepared with wet-weather gear.

Rhododendrons in full bloom paint the trails with vibrant colours during spring in the Himalayas.

Autumn is the most popular time for the Annapurna Circuit. The monsoon clears the dust and haze, leaving beautiful, clear views of the Himalayas. The weather is stable, passes are open, and trails are in excellent condition.

The only drawback? Crowds, as mentioned earlier. October, in particular, is the busiest month of the year. Guesthouses fill quickly, and popular sections of the trail can feel congested.

Teahouses high up in the alpine desert of the Annapurna Circuit in Nepal.

Trekking the Annapurna Circuit in winter is possible but risky. The Thorong La Pass is often closed by heavy snow, and temperatures at high elevations are brutally cold. Guesthouses in higher villages sometimes shut down. This season suits only experienced trekkers with technical gear and flexibility in their plans.

The sign to look for when you reach the Thorung La Pass on the Annapurna Circuit trek.

The Annapurna Circuit and monsoon don’t mix well. Trails become muddy, leeches are abundant, landslides are frequent, and mountain views are often hidden by thick clouds. For most trekkers, this is the least appealing season.

An experienced trekker braving the rain and mist on the Annapurna Circuit.

To make planning easier, here’s a side-by-side comparison of both treks across the year:

Both the Nar Phu trek and the Annapurna Circuit are once-in-a-lifetime adventures, but they deliver very different experiences. Choosing between them depends on the kind of trekker you are and what you want to get out of your time in the Himalayas.

The Nar Phu Valley trek is perfect for those who crave remoteness and authenticity. Few trekkers venture here compared with Nepal’s more famous routes, so the villages of Nar and Phu still feel untouched by tourism. Walking through medieval stone settlements, visiting centuries-old monasteries, and crossing the high Kang La Pass feels like stepping into another time.

It’s also one of the only treks in Nepal you can realistically do in summer, thanks to its location in the rainshadow of the Annapurna range. If you want raw landscapes, solitude, and cultural immersion, Nar Phu offers a unique Himalayan experience.

To trek in the Nar Phu Valley, you’ll need both a Restricted Area Permit (RAP) and an Annapurna Conservation Area Permit (ACAP). These permits were introduced to protect the fragile environment, preserve the unique Tibetan-influenced culture, and ensure traveller safety. Nar and Phu villages only opened to outsiders in 2002, making the area one of Nepal’s less-explored gems. The region is remote, and medical help is hard to access; solo trekking is not allowed.

Hiring a licensed guide is compulsory for safety and compliance with regulations. Alongside your permits, be sure to carry your passport, Nepal visa, and travel insurance for a smooth journey.

Tibetan Nar Village in Nar-Phu valley.

Learn more: Why the Annapurna Circuit is Nepal's golden child

The Annapurna Circuit, by contrast, is one of the most iconic trekking routes in the world. It’s ideal for those who want variety – lush subtropical valleys, alpine meadows, desert-like plateaus, and the mighty Thorong La Pass all in one trip.

This trek is also a cultural journey, taking you through different communities from Gurung and Thakali villages to Tibetan-influenced settlements. Infrastructure is stronger here than in Nar Phu, with plenty of guesthouses, making it more comfortable and sociable.

If you’re planning to trek the Annapurna Circuit in Nepal, you’ll need a couple of permits. The Annapurna Conservation Area Permit (ACAP) is mandatory for all trekkers, helping to protect the region’s environment and wildlife. You must also carry a Trekkers’ Information Management System (TIMS) card, which ensures your safety and allows authorities to keep track of trekkers in the area. Both permits are essential for a smooth and legal trekking experience.

Both deliver life-changing Himalayan adventures, but the choice comes down to whether you want the hidden valley mystery of Nar Phu or the classic grandeur of the Annapurna Circuit.

Learn more: Annapurna Circuit trekking map and trail guide

Have a look at what the Annapurna Circuit has to offer:

At Follow Alice, we help trekkers match not only the right route but also the right season. If you dream of discovering the hidden valleys of the Nar Phu trek or experiencing the legendary Annapurna Circuit, our expert team will guide you every step of the way.