Best Seasons to Trek to Everest Base Camp: Adventurer Must Know

After more than two decades guiding trekkers up the Khumbu Valley, the question I am asked most is not "how hard is it?" but "when should I go?" Choosing the right season for your Everest Base Camp (EBC) trek shapes everything: the mountain views, the temperature in your sleeping bag at 5,140m, how busy the teahouses are, and even your odds of summiting Kala Patthar in clear weather. This is our honest, first-hand guide to the EBC seasons in 2026.

The two best seasons at a glance

For the vast majority of trekkers, the choice is simple: spring or autumn. Both deliver dry, settled weather, clear morning skies and trails that are safe to walk without technical winter gear. The differences are in the detail — temperature, haze, crowds and the colour of the landscape — and that detail is where you decide.

Season	Months	Pros	Cons
Spring	Mar–May	Warmer days, blooming rhododendrons, longer daylight, climbing-season buzz at Base Camp	Hazier afternoons, busy trails in Apr, occasional pre-monsoon storms up high
Autumn	Sep–Nov	Most stable weather, crystal-clear post-monsoon visibility, comfortable daytime temps	Cold nights, peak crowds in mid-Oct, fully booked teahouses
Winter	Dec–Feb	Empty trails, pristine snow, sharp clear skies	Severe cold, snow-blocked passes, many teahouses closed — experienced only
Monsoon	Jun–Aug	Lush valleys, almost no other trekkers, lowest prices	Rain, cloud-obscured peaks, flight delays, leeches lower down — not recommended

Spring (March–May)

Spring is the postcard season. As the valley thaws, the lower forests around Namche, Phakding and Tengboche erupt with blooming rhododendrons, and the days are noticeably warmer than in autumn. By late spring, daytime highs near Base Camp reach roughly 0°C to 10°C, while nights stay mostly above -15°C — comfortable by Himalayan standards. Spring is also the climbing season, so reaching Base Camp in April or May means walking into the colourful, humming tent city of the Everest summit expeditions, an experience autumn cannot offer.

The trade-off is haze and crowds. Dust and pre-monsoon moisture build through the afternoons, so mountain views are sharpest at dawn and can soften by lunchtime. April is the busiest spring month, with teahouses filling fast on the classic 14-day Everest Base Camp route.

What to pack for spring

• Rain shell and pack cover for pre-monsoon showers down low
• Convertible hiking trousers and lightweight thermals for warm days
• A proper down jacket for cold nights and dawn starts above 4,000m

Autumn (September–November)

If I had to recommend one window, it would be autumn — and specifically October. The monsoon washes the atmosphere clean, leaving the post-monsoon air free of dust and haze. The result is the best mountain visibility of the entire year: deep blue skies, sharp ridgelines, and Everest, Lhotse, Nuptse and Ama Dablam in full, unobstructed glory. October's weather stability is genuinely legendary; it is the most popular trekking month not just in Nepal but arguably in the world.

Daytime highs near Base Camp sit around 0°C to 5°C, with nights between -5°C and -10°C — cold but very manageable with a four-season sleeping bag. Late September and late November are the quieter shoulders: nearly the same superb conditions with noticeably fewer people. By the end of November the cold sharpens as winter approaches.

What to pack for autumn

• Warmer thermals and a fleece mid-layer for chilly mornings and nights
• Waterproof, broken-in hiking boots for any early snow up high
• Trekking poles for stability on frosty trail sections

Winter (December–February)

Winter rewards the prepared with empty trails and the Khumbu draped in pristine snow under some of the sharpest skies of the year. But it is demanding. Temperatures plunge well below freezing day and night, heavy snow can block the high sections above Lobuche, and many teahouses close for the season. This is not a beginner's trek.

Monsoon (June–August): why we advise against it

The summer monsoon brings heavy, persistent rain to the lower Khumbu, cloud that obscures the very peaks you came to see, and a real risk of Lukla flight delays as low cloud grounds aircraft for days. Lower-elevation forests bring leeches and slippery trails. Some hardy trekkers do go for the lush, near-empty valleys and rock-bottom prices, but for a once-in-a-lifetime EBC trek, the odds of being rained and clouded out are simply too high. We do not run scheduled EBC departures in the core monsoon.

Permits, costs and altitude — season-independent essentials

Whatever season you choose, two permits are required for EBC in 2026, and a TIMS card is no longer needed inside the Khumbu:

Permit	Cost (foreigner, 2026)	Where to get it
Sagarmatha National Park Entry	NPR 3,000 (~USD 22)	Kathmandu (NTB) or Monjo checkpoint
Khumbu Pasang Lhamu Rural Municipality	NPR 2,000 (~USD 15)	Lukla or Monjo
Total	~NPR 5,000 (~USD 37)	Carry Nepali Rupees — cash only

Permit fees are non-refundable, and the Khumbu accepts Nepali Rupees only — bring cash. A full guided EBC trek typically costs USD 1,400–2,500 depending on inclusions, route and group size; you can read the detailed breakdown in our Everest Base Camp cost guide for 2026. For the official permit framework, see the Nepal Tourism Board and our own EBC permit deep-dive.

So, when should you go?

If you want the most reliable clear views and the safest, most settled conditions, book October (or late September / late November for fewer crowds). If you prefer warmer days, the rhododendron bloom and the energy of climbing season, choose April or May and start each day early. Avoid the monsoon, and only attempt winter if you are experienced and properly equipped. For a wider look at timing across the country, see our best time to trek Nepal in 2026 guide, and the Everest region guide for routes and logistics.

Further resources: Nepal Tourism Board · Department of Immigration (visas) · World Health Organization travel advice.