When is the best time to trek Everest Base Camp?
The 2026 season, month by month
TL;DR. Trek Everest Base Camp in autumn (late Sep–Nov) or spring (Mar–May) — October and April are the sweet spots for clear skies and stable weather. Autumn is the classic season: the clearest, most stable skies, with cold nights that deepen through November. Spring is warmer and longer-lit but hazier for long views, and it overlaps the Everest summit-climbing season, so Base Camp is busier and more tented. Winter (Dec–Feb) is very cold and quiet — for the well-prepared only. Monsoon (Jun–early Sep) clouds out the views and grounds Lukla flights. One first-hand note: the measured trek behind this site was walked 2–11 November 2025 — early November, the cold end of the autumn window.
⚠️ The deciding factor on EBC isn’t only the weather on the trail — it’s the Lukla flight. The mountain airstrip is weather-dependent all year, and a grounded flight can cost you days at either end. Autumn and spring are the most reliable windows, but delays still happen, so the season you pick matters less than the buffer days you build in.
Quick answers
The two good windows
Autumn (late September – November) is the classic Everest Base Camp season and the busiest. Once the monsoon clears out, the air is clean and stable and the ring of Khumbu giants stands out at its sharpest. This is the window most trekkers aim for, and it’s the one our measured trek fell inside.
- Late September – October brings the clearest, most stable post-monsoon skies of the year. Lower-valley days are mild; nights climb toward freezing as you gain altitude. It fills up — teahouses through Namche, Dingboche and Gorakshep book out, and Lukla flights are at their busiest.
- November stays clear and stable and gets steadily colder, the nights deepening through the month at altitude. Fewer walkers than October, and the views hold. Our own record — Nashriq’s Garmin trek, 2–11 November 2025 — is exactly this: stable and clear, and genuinely cold above roughly 4,000 m.
Spring (March – May) is the second window — warmer, with longer days.
- March is quieter but colder, with winter snow still lingering high on the route. Early spring is the crowd-free trade for harsher conditions up top.
- April – May brings warm days and long light, and it’s arguably the best all-round spring month alongside October. Two catches, both sourced: long-range views haze up as pre-monsoon heat builds, and spring overlaps the Everest summit-climbing season, so Base Camp itself is busier and far more heavily tented than in autumn.
The two hard seasons
Winter (December – February) is very cold and very quiet. The lower forest trails stay walkable and the air is often beautifully clear, but nights are harsh above 5,000 m, some higher teahouses close for the coldest weeks, and snow can disrupt the Lukla flights the whole trek hangs on. Winter EBC is doable for prepared, flexible trekkers with proper cold gear, current local snow advice and generous buffer days — but it is for the well-prepared only, and it’s a season we have not yet walked.
Monsoon (June – early September) is the season to avoid if you can. The Khumbu takes the full weather:
- Cloud hides the mountains for days at a stretch — you can walk the whole valley and see little of what you came for.
- Leeches infest the wet forest on the lower approach.
- Rain and poor visibility make the high, exposed sections less pleasant and less safe.
The catch that no season removes: Lukla
Every EBC trek starts and ends with the Lukla flight, a short mountain hop onto a hillside airstrip — and it is weather-dependent all year. Autumn and spring are the most reliable windows, but delays and cancellations still happen, and the monsoon grounds flights routinely. In the peak October–November crush, flights often run from Manthali/Ramechhap instead of Kathmandu, adding a pre-dawn road transfer to the day. The season you choose shifts the odds; it never removes the risk. Build buffer days — a grounded flight at either end shouldn’t cost you the trek.
Month by month
| Month | Conditions | Lukla flights | Verdict |
|---|---|---|---|
| Jan | Coldest; harsh up high | Snow-disruptable | Hard — quiet, cold, prepared only |
| Feb | Cold, clearing late | Weather-dependent | Quiet, for the prepared |
| Mar | Spring begins; snow lingering high | Improving | Good, quieter, colder |
| Apr | Warm, long days; haze building | Reliable | Excellent (busy, climbing season) |
| May | Warm, hazier long views | Reliable early | Good (hazy, busy late) |
| Jun | Pre/early monsoon | Getting unreliable | Views fading; leeches start |
| Jul–Aug | Peak monsoon | Frequent cancellations | Avoid — no views, access risk |
| Sep | Monsoon easing late | Improving late | Improving toward month-end |
| Oct | Crisp, stable, clearest | Most reliable (often ex-Ramechhap) | Excellent (busiest) |
| Nov | Clear, stable; cold deepening | Reliable | Excellent (cold nights) |
| Dec | Cold, short days; clear air | Snow-disruptable | Quiet, cold, prepared only |
What we can say first-hand
We’re honest about the line between measured and sourced, so here it is: everything about the seasons on this page is sourced general knowledge, corroborated across current Everest Base Camp guides and regional climate references — not something we measured. What is first-hand is a single point at the edge of it.
The measured trek this cluster is built on was walked 2–11 November 2025, recorded by Nashriq on a Garmin watch — 157.8 km over 10 walking days, high point 5,282 m at Base Camp, with an optional pre-dawn climb onto Kala Patthar’s 5,320 m shoulder above it. That’s early November: inside the autumn window, at its colder end. So when we say autumn is stable and clear with cold nights at altitude, it’s the one stretch we can back with a trek we actually hold the file for — clear and stable, and genuinely cold above roughly 4,000 m. We didn’t record a thermometer, so we speak to it qualitatively; the wider seasonal picture stays clearly sourced until we’ve walked the others.
So, when should you go?
- Best all-round: October or April — the safest bet for clear skies, stable weather, and reliable Lukla flights.
- Best views, don’t mind cold or crowds: late September–November — the crispest, most stable post-monsoon air, cold nights deepening as the season runs.
- Want warmth and long days: April–May — accept hazier long-range views and a busier, tented Base Camp during the climbing season.
- Want it quieter: early December or the shoulders of spring — quieter trails traded for colder, harsher conditions up high.
- Only free in summer: don’t force EBC — the monsoon clouds out the views and grounds the flights. Move your dates if you possibly can.
- Winter: only with serious cold-weather experience, proper gear, current local advice and generous buffer days.
Whatever the season, the trek sleeps as high as roughly 4,925 m and the nights are cold — our altitude guide covers the risk that no season removes, and the permits guide covers the permits you need year-round. And whatever month you pick, build buffer days for Lukla.
Our honest position
We’ve walked EBC once, in early November 2025, and we hold the measured file for it. We have not yet walked it in spring, winter or monsoon, so the month-by-month above is sourced, not first-hand — and it says so plainly. As we return in other seasons, this guide gains first-hand notes on exactly what the conditions were, against the sourced ranges here. Sourced today, first-hand next.
Sources & notes
- Seasonal weather, the autumn/spring windows, and winter/monsoon conditions: corroborated across current 2025–2026 Everest Base Camp season guides and regional climate references.
- Lukla flight reliability, buffer days, and peak-season Manthali/Ramechhap departures: consistent across current Khumbu logistics guidance.
- First-hand data point: the measured 2–11 November 2025 trek recorded by Nashriq (the fitter tail of the group) on a Garmin watch; Kak Yaa, an experienced hiker who has walked Everest Base Camp herself and supports Malaysian groups remotely (not a licensed guide, and not on this recorded trip), supplies trail testimony across our EBC coverage. High point measured at 5,282 m (Base Camp); Kala Patthar’s shoulder measured at 5,320 m — a viewpoint, not a summit.
- Status: sourced ranges current to August 2026; mountain weather varies year to year — check a recent forecast and local advice before you commit. First-hand spring, winter and monsoon notes to be added after future treks.
Educational planning content, not medical advice — high-altitude weather turns fast and Lukla flights can ground you in any season; check conditions locally and build buffer days before you go. Some links are affiliate links; we only recommend what we’d use ourselves, at no extra cost to you. © 2026 keitreks · The numbers are measured. The trail is next.
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