The best time to hike to Everest Base Camp is October and November 2026, when post-monsoon skies are clearest, daytime temperatures sit around 10–15 °C at Namche Bazaar (3,440 m), and Lukla flights run on schedule. March to May is the strong spring alternative — warmer and greener but hazier — while the June–September monsoon and the deep cold of December–February are best avoided.
Choosing the right window for the 130 km Everest Base Camp Trek shapes everything from flight reliability to whether you actually see Everest. The Khumbu has four distinct seasons, and the difference between October and July is the difference between crystal panoramas and washed-out cloud with cancelled flights. Here is how each month performs in 2026, with temperatures, crowd levels and the trade-offs that matter.
Why is autumn the best season for Everest Base Camp?
Post-monsoon autumn (late September to late November) gives the most stable weather of the year. The monsoon rains have washed dust from the air, leaving visibility that regularly exceeds 100 km. Daytime highs reach 12–15 °C at lower villages and around 5 °C at Gorak Shep (5,164 m), with overnight lows of -10 to -15 °C up high. October is peak season, so expect busy teahouses; early November thins the crowds while staying clear. The full elevation profile and daily stages are on our Everest Base Camp Trek guide.
Is spring a good time to trek to Everest Base Camp?
Spring (March to May) is the second-best window and the favourite of climbers staging summit attempts. April brings rhododendron forests in full bloom below 3,500 m and milder nights, with lows around -8 °C at altitude. The trade-off is afternoon haze that softens distant peaks, plus growing pre-monsoon cloud build-up by late May. Base Camp itself is busiest in spring because expedition teams fill the glacier — fascinating to witness, but the tented city is crowded.
Everest Base Camp seasons compared
| Season | Months | Views | Crowds |
|---|---|---|---|
| Autumn | Oct–Nov | Excellent | High (Oct) |
| Spring | Mar–May | Good, hazy | High at BC |
| Monsoon | Jun–Sep | Poor | Low |
| Winter | Dec–Feb | Clear, cold | Very low |
Why you should avoid the monsoon and deep winter
From June to September, the monsoon dumps rain on the lower Khumbu, leeches appear on the trail below 3,000 m, and cloud hides the peaks for days. Critically, Lukla's flights are cancelled regularly in monsoon, stranding trekkers for days at either end. Winter (December–February) clears the skies again but at a brutal price: overnight lows of -25 °C at Gorak Shep, snowed-in high routes, and many teahouses shuttered until spring. If you trek in winter, carry a full expedition sleep system.
How weather affects your gear choice
Temperature swings of 25 °C between midday sun and a Gorak Shep night drive a layered packing strategy. Whatever the season, you want a pack that carries a heavy down jacket and water without bulk — a 35 L daypack like the Fjällräven Abisko Hike 35 works well when a porter carries your duffel, while self-supported trekkers favour the Osprey Atmos AG 65 or the Gregory Baltoro 65 for the larger winter sleep system. Our full Everest Base Camp packing list breaks down layers by season.
Booking Lukla flights and permits for 2026
In peak season, many Lukla flights now depart from Manthali (Ramechhap), a 4–5 hour drive from Kathmandu, so build a buffer day into each end of your trip. Permit rules and park-fee updates are published by the Nepal Tourism Board, and altitude-safety briefings are run by the Himalayan Rescue Association at Pheriche. If autumn dates are full, consider the quieter but harder Three Passes Trek, which shares the same seasonal pattern.
How cold does it get by altitude?
Temperature on the Everest Base Camp Trek drops sharply as you climb, and the same calendar day feels mild at Lukla yet bitter at Gorak Shep. In peak autumn, expect daytime highs of 12-15 C around Namche Bazaar (3,440 m) but overnight lows of -10 to -15 C at Lobuche (4,940 m) and Gorak Shep (5,164 m). The pre-dawn climb to Kala Patthar (5,550 m) is the coldest moment of the trek, often -15 C with wind chill, which is exactly when you want your heaviest down jacket.
This altitude-driven cold is why a layered system beats a single warm coat. During the day you may walk in just a base layer and sun hat under strong Himalayan sun, then add a fleece, a puffy and a hardshell within minutes when a cloud rolls over a ridge. Nights in unheated teahouse rooms hover near the outdoor temperature, so a sleeping bag rated to at least -15 C and a liner are non-negotiable in every season except deep winter, when you need warmer still. Spring nights run a few degrees milder than autumn but bring more afternoon cloud. Whatever month you choose for 2026, plan your clothing around the highest, coldest nights rather than the comfortable lower villages, and you will stay warm across the full 30 C daily swing the Khumbu throws at you.
One practical timing tip for 2026: align your trek with the new moon if you hope to photograph the night sky over Everest, as the Khumbu's clear autumn air at 5,000 m produces some of the most vivid star fields anywhere on the planet. More importantly, avoid booking the very first or very last departures of each season, when weather is least settled and some higher teahouses may not yet have reopened or may already be closing. The heart of the season, mid-October to mid-November and the second half of April, offers the most reliable combination of open lodges, staffed routes and stable skies. Booking a 14-16 day trip rather than a tight 12-day schedule also lets you absorb the inevitable Lukla flight delay without sacrificing an acclimatisation day, which is the difference between reaching Kala Patthar and turning back early with altitude sickness.
Frequently Asked Questions
What is the coldest month on the Everest Base Camp Trek?
January is the coldest, with overnight lows near -25 °C at Gorak Shep (5,164 m) and daytime highs barely above freezing at altitude. Even in peak autumn, nights at the highest villages drop to -10 to -15 °C, so a sleeping bag rated to -15 °C or colder is essential year-round.
Can you see Everest in the monsoon season?
Rarely. From June to September, thick cloud covers the high peaks for most of the day, and the famous panoramas from Kala Patthar are usually hidden. Mornings occasionally clear briefly, but combined with frequent Lukla flight cancellations, the monsoon is the weakest time to trek.
How many days do you need for the Everest Base Camp Trek?
Plan 12–14 days for the round trip from Lukla, including two acclimatisation days at Namche Bazaar (3,440 m) and Dingboche (4,410 m). Adding buffer days for possible Lukla flight delays brings most itineraries to 14–16 days door to door from Kathmandu.
Is October or November better for Everest Base Camp?
October has the most reliable weather but the heaviest crowds, while early-to-mid November stays clear with noticeably fewer trekkers and slightly colder nights. For 2026, mid-November is the sweet spot if you want stable skies without October's congestion on the trail and in teahouses.
Do Lukla flights get cancelled often?
Yes, weather cancellations are common, especially in monsoon and winter. Even in peak autumn, fog can ground flights for a morning. Always build at least one buffer day at each end of your itinerary, and in busy seasons expect to fly from Manthali (Ramechhap) rather than Kathmandu.