When Is the Best Time to Trek in Nepal? The Real Month-by-Month Data for 2026
Autumn and spring aren't just guidebook folklore — Nepal's own 2025 visitor data backs them up almost exactly. Here is what the numbers, and the weather behind them, actually show.
At a glance
- Published
- TopicTrail & Weather
- Verified againstThe Himalayan Times
- Treks coveredEverest Base Camp Trek — 14 Days, Upper Mustang Trek — 12 Days, Annapurna Base Camp Trek — 9 Days
The best time to trek in Nepal is October–November or March–May, and it isn't just guidebook folklore. Nepal's own 2025 visitor-arrival data backs it up almost exactly: October was the country's single busiest month for international arrivals, and March and April weren't far behind. Here is what the numbers, and the weather behind them, actually show.
Why autumn wins on the data, not just tradition
Nepal recorded 1,158,459 international visitor arrivals in 2025, about 96.8% of pre-pandemic 2019 levels. October led every month of the year, followed closely by the spring window of March and April. That pattern lines up with the physical weather, not just habit: the monsoon rains that run June through September wash the dust and haze out of the air, and by mid-October the skies over the Himalaya are at their clearest of the year, with stable high pressure holding before winter cold sets in. Spring brings warmer days and rhododendron blooms lower down, at the cost of slightly hazier long-range mountain views than autumn typically offers.
What each season is actually like on the trail
Numbers aside, conditions vary sharply by season in the high valleys around Everest and Annapurna, where most trekkers are headed.
| Season | Months | Typical conditions | Verdict |
|---|---|---|---|
| Autumn / post-monsoon | Oct–Nov | 0–15°C by day, well below freezing at night above 4,000m; driest, clearest air of the year | Best visibility, busiest trails and teahouses |
| Spring | Mar–May | 5–20°C in lower valleys, cooler and windier higher up; rhododendrons in bloom | Second-best window, warmer nights, hazier distant views |
| Winter | Dec–Feb | As low as −15°C at altitude, under 20mm of rain a month; skies often very clear | Quiet trails, cheap teahouses, brutal cold above 4,000m |
| Summer / monsoon | Jun–Sep | Warm but wet, 200mm+ rainfall a month at peak, cloud regularly hides the peaks | Avoid the classic high routes; leeches and landslide-hit roads |
The exception: treks built for monsoon
Not every region follows that pattern. Upper Mustang and Dolpo sit in the Himalayan rain shadow, north of the main range, so they stay dry even while the rest of the country is drenched. A trek into Upper Mustang in July or August can mean clear high-desert skies while Everest Base Camp and Annapurna Base Camp are socked in under cloud at the same moment — genuinely one of the few times of year we would actively steer a trekker away from the classic routes and toward Mustang instead.
What this means for your trek
If you can only travel in October or April, book flights, Lukla seats and permits two to three months out — those are the two most oversubscribed windows of the entire trekking calendar. If your only free time is June to August, don't force a classic high route; go to Upper Mustang or Dolpo instead, where the season works in your favour rather than against it. December and January reward trekkers who can handle the cold with some of the clearest mountain views and the emptiest trails of the year.
Whichever window suits you, our Everest Base Camp and Annapurna Base Camp itineraries run through both peak seasons, and we can shift departure dates to match the conditions you actually want.
Source: The Himalayan Times
Cover photo: Ashok J Kshetri via Pexels (Pexels License).
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