The EBC trek starts from Lukla at 2,860 m to Everest Base Camp at 5,364 m, with most trekkers continuing to Kala Patthar at 5,545 m for the actual view of Everest. That's nearly 2,700 metres of altitude gain, and the weather across that range is not uniform.
At Lukla or Phakding, daytime temperatures in October can feel almost warm. At Gorak Shep the same week, nights drop below −15°C. The higher you go, the colder, windier, and less predictable the conditions you get.
The Khumbu region has two best trekking seasons: autumn (September to November) and spring (March to May). The monsoon runs from June to August, making the lower trail muddy, wet, and hard to navigate. Winter (December to February) is cold, quiet, and only realistic for experienced trekkers.
Everest Base Camp Trek in January
January is the coldest month on the Everest Base Camp route. Daytime temperatures above 4,000 m typically range from −5 to 0°C, with nights regularly dropping to −20°C at Gorak Shep. Skies are often clear, but the cold is serious, and lodge availability above Dingboche is limited. January is possible for well-prepared trekkers, but it is not a month we recommend to most clients.
Everest Base Camp Trek in February
February on the Everest Base Camp trail is still a winter trek in every practical sense, though temperatures begin edging slightly upward toward the end of the month. Above 4,000 m, daytime temperatures remain well below freezing, and snowfall is possible on the upper sections around Dingboche and higher. Trail conditions are generally stable, and a few more lodges are starting to open in preparation for the spring season, which improves your accommodation options compared to January. February still requires the same cold-weather gear and preparation as a full winter trek.
Everest Base Camp Trek in March
Spring begins on the EBC route in March. Daytime temperatures at higher elevations (above 4,500 m) typically range from 0–5°C. Nights remain cold at −10 to −15°C above 4,500 m, but lodges are open, and trails are drying out. March is a solid month to trek, especially in the early part of the season when crowds are thinner.
Everest Base Camp Trek in April
April is one of the best months on the trail. Daytime temperatures reach 10–15°C at mid-altitude stops like Namche and Tengboche, while higher camps stay cooler. Skies are mostly clear in the morning, with some cloud build-up by afternoon, and the trail is busy and crowded. Some trekkers prefer April for slightly warmer temperatures and spring scenery, while others favor October for its more stable skies.
Everest Base Camp Trek in May
May is warm lower down, but the jet stream still affects the upper Khumbu, and wind can be strong above 5,000 m. Daytime temperatures at EBC level hover around 0–5°C, and clouds build earlier in the day than they do in April. The first half of May is generally good, but the second half becomes less reliable as pre-monsoon conditions set in. The first half of May is generally more reliable, while conditions become less predictable toward the end of the month as pre-monsoon weather builds.
Everest Base Camp Trek in June
The monsoon arrives in June, typically in the early to mid part of the month. Below 3,000 m, you can expect daily rain, leeches on the trail, and poor visibility. Above 4,000 m, rainfall is lower, but cloud cover and poor visibility remain major issues. June is not a month we recommend for first-time trekkers.
Everest Base Camp Trek in July
July is the peak monsoon on the EBC trail. The trail is wet, visibility is often zero, and the lower forests are humid and difficult to move through. Flight disruptions at Lukla become more frequent, and while EBC is still technically reachable, conditions are genuinely difficult, and the experience is not what most people picture when they plan this trek. July is only worth considering for trekkers with a very specific reason to go.
Everest Base Camp Trek in August
August is still within the monsoon period, though conditions can occasionally clear above 4,500 m for short windows. The same caveats from July apply throughout August. Some trekkers who are very flexible on timing manage a reasonable trek, but August is not a month to plan for unless you're fully prepared for rain-heavy days and consistently limited views.
Everest Base Camp Trek in September
September is the transition month on the EBC route. Monsoon rains taper off, usually clearing by mid to late September, and the trails are green and quiet during this period. By the last two weeks of the month, conditions improve significantly, and the skies start opening up. Most trekkers overlook September, but they shouldn't. It's a genuinely good window, especially if you arrive in Lukla after September 20.
Everest Base Camp Trek in October
October is the best month on the trail. Skies are clear, temperatures are comfortable during the day at 5–12°C at mid-altitude, and views of Everest and the surrounding peaks are reliable throughout the month. Nights at Gorak Shep drop to -15 to -18 °C, so sleeping bag quality matters more than most trekkers expect. Lodges fill up fast in October, and you should book everything well in advance.
Everest Base Camp Trek in November
November is still excellent for trekking to Everest Base Camp, and it's often less crowded than October. Daytime temperatures drop as the month progresses, and by late November, it genuinely feels like early winter above 4,500 m. Nights at Gorak Shep reach −18 to −20°C, though clear skies continue throughout the month. November is a good option if you prefer a quieter trail and don't mind the cold.
Everest Base Camp Trek in December
Winter conditions begin in earnest in December. Lodges above Namche start closing at some stops, and nights fall below −20°C at Gorak Shep and EBC. The trail is walkable but genuinely cold, and you need a sleeping bag rated to at least −25°C to be comfortable above 4,500 m. December is not a month for beginners.
Best Time to Trek to Everest Base Camp
The two windows that consistently offer the best EBC trekking conditions are autumn (September to November) and spring (March to May).
Autumn is the more popular of the two. October in particular gives you stable weather, clear mornings, and open lodges from bottom to top. November is quieter and slightly colder, but still very good. September is the start of the autumn window — the second half of the month is reliable, but you need flexibility in the first two weeks as the monsoon doesn't always clear on schedule.
Spring has the added appeal of rhododendrons on the lower trail and a slightly warmer feel at mid-altitude stops, though wind above 5,000 m can be stronger than in autumn. April is the standout month in this season. March is quieter and still very good. May is possible but requires careful timing above 5,000 m.
The low seasons — monsoon (June to August) and winter (December to February) — are not impossible, but the experience is substantially different. Go in with that expectation, not the assumption that conditions will cooperate.
Temperature at Each Stop on the EBC Route
Temperatures vary significantly depending on whether you're at a valley-floor teahouse or a high-altitude camp. Note that Phakding sits slightly lower than Lukla in the table below because the trail descends from Lukla before climbing toward Namche — the table follows trail order, not altitude order. The figures below give you a realistic reference for the two main trekking seasons
| Stop | Altitude | Day Temp – Spring | Night Temp – Spring | Day Temp – Autumn | Night Temp – Autumn |
| Lukla | 2,860 m | 10–15°C | 2–5°C | 8–14°C | 1–4°C |
| Phakding | 2,610 m | 12–16°C | 3–6°C | 10–15°C | 2–5°C |
| Namche Bazaar | 3,440 m | 8–12°C | −3 to 2°C | 6–11°C | −3 to 0°C |
| Tengboche | 3,860 m | 5–10°C | −4 to −1°C | 4–9°C | −5 to −2°C |
| Dingboche | 4,410 m | 4–8°C | −6 to −3°C | 3–7°C | −8 to −5°C |
| Lobuche | 4,940 m | 1–5°C | −10 to −7°C | 0–4°C | −12 to −9°C |
| Gorek Shep | 5,164 m | 0–4°C | −14 to −10°C | −1 to 3°C | −18 to −15°C |
| EBC | 5,364 m | −1 to 3°C | −16 to −12°C | −2 to 2°C | −20 to −16°C |
| Kala Patthar | 5,545 m | −3 to 1°C | — | −4 to 0°C | — |
Night temperatures at Kala Patthar are not listed separately, as most trekkers summit before sunrise and descend to Gorak Shep before dark.
Wind and Precipitation on the EBC Trail
Wind is the factor most trekkers underestimate. Below 4,000 m, wind is rarely a problem. Above 4,500 m, it's a real variable, especially on exposed ridgelines near Lobuche, Gorak Shep, and Kala Patthar.
The worst wind months are December to February, when the winter jet stream pushes down to lower altitudes. May also brings strong upper-altitude winds as the jet stream shifts before the monsoon. On Kala Patthar specifically, calm mornings are the rule in October and November, which is one more reason those months work well for a pre-dawn summit.
Snowfall above 4,000 m is most common from December to February, though it can occur in any month. A fresh snowfall rarely closes the trail for more than a day in the main trekking seasons. The bigger concern is ice on the trail in the early morning, particularly on sections above Lobuche.
Afternoon cloud build-up is normal from March onwards. Your Kala Patthar summit window should be early morning, ideally before 8 or 9 a.m. In October, you often have longer clear windows, but mornings are still the safest bet.
What to Wear for EBC Weather
Layering is the only system that works on this trail, because you'll move through very different temperature zones in a single day.
Below 3,500 m, which covers the trail from Lukla to Namche, a moisture-wicking base layer, a mid-layer fleece, and a waterproof shell are enough during the day. Evenings at Namche get cold, and you'll want the insulation layer at dinner.
From 3,500 to 5,000 m, covering Tengboche through to Lobuche, add a proper insulation layer, either down or synthetic. Wind protection becomes essential above Tengboche. Gloves are not optional above Namche; many trekkers pack them but leave them at the bottom of their bag until day four, and then wish they'd had them from day one.
Above 5,000 m, which is essentially Lobuche to Kala Patthar, you need a full down jacket, face protection including a neck gaiter, and sun protection for the skin, a warm hat, glove liners inside outer mitts, and boot gaiters if there's been recent snowfall. The standard single-layer approach that works in Namche does not work at Gorak Shep at night.
The most common mistake is cotton. Cotton absorbs sweat and stays wet. On a cold descent from Kala Patthar, a damp cotton base layer is genuinely dangerous.
How EBC Weather Affects Acclimatization
Cold, dry air at altitude accelerates fluid loss faster than most trekkers expect. At 4,500 m, you can lose significant moisture through breathing alone, without feeling thirsty. This dehydration compounds early AMS symptoms, including headache, fatigue, and difficulty sleeping, in ways that make it harder to tell what's actually wrong.
Bad weather forcing a rest day is not always a setback. An unplanned acclimatization day at Dingboche because of cloud and rain has helped more trekkers reach EBC than it has stopped. The body doesn't care about your itinerary. Give it time to adjust.
Cold also makes people less likely to drink enough water. Carry an insulated water bottle above 4,000 m and set a reminder to drink every 30 minutes.
Frequently Asked Questions
Is EBC weather predictable?
In the two main trekking seasons, yes, to a reasonable degree. October and November are the most stable months, with consistent, clear mornings and predictable cold nights. Spring is slightly less predictable above 5,000 m due to wind. Outside these seasons, conditions can change quickly and require more flexibility in your itinerary.
What is the coldest point on the EBC trek?
Kala Patthar at 5,545 m is the highest point most trekkers reach, and nights at Gorak Shep, just below at 5,164 m, are the coldest you'll sleep through. In October and November, those nights regularly fall to −18 to −20°C. Wind chill at Kala Patthar before sunrise makes it feel significantly colder than the air temperature alone.
Can EBC be trekked in the rain?
Yes, but the experience below 3,000 m during monsoon months is genuinely difficult, with muddy trails, leeches, poor visibility, and higher flight disruption risk at Lukla. Above 4,000 m, the monsoon has less impact, but the lower sections of the trail make it a harder overall journey. It's doable; it's just not what most trekkers sign up for.
Does snow block the EBC trail?
Rarely for more than a day or two. A heavy snowfall above 4,000 m can close sections temporarily, but the trail reopens quickly as other trekkers and porters pack it down. Ice on early morning descents near Lobuche is more of a practical hazard than deep snow.
How different is the weather at Lukla vs Base Camp?
Very different. On a typical October day, Lukla might be 13°C and partly sunny. That same day, EBC will be around 0°C with wind. At night, Lukla drops to around 2°C while Gorak Shep is at −17°C. The altitude difference of about 2,500 m between those two points creates a completely different climate. Trekkers who judge the whole route by how Lukla feels on arrival regularly underpack for the upper section.
Final Thoughts
The weather on the Everest Base Camp route is manageable in any season if you know what to expect. October and April are the standout months, but the right time depends on your goals, your tolerance for cold, and how you like to trek. Prepare for the altitude you are heading to, not the altitude you land at, and the route will reward you regardless of the month. If you need help planning, our team at World Alpine Treks is happy to help you choose the right window.
