Everest Base Camp Trek Weather: Month-by-Month Guide

The most critical fact about Everest Base Camp trek weather is this: Lukla (2,860m) and Gorak Shep (5,164m) can sit more than 25°C apart on the exact same day. Understanding that gap - by elevation, by month - is what separates trekkers who arrive prepared from those who don't.

This guide covers Everest Base Camp temperature data, rainfall, snowfall risk, and trail conditions for all 12 months. It includes per-stop temperature tables, wind data, acclimatization notes, and honest pros and cons for every month of the year.

Quick season orientation:

Spring - March to May

Monsoon - June to August

Autumn - September to November (best window for most trekkers)

Winter - December to February

Everest Base Camp Monthly Weather

Rainfall figures are lower-trail averages (Lukla to Namche). Above 4,000m, the rain shadow effect reduces these significantly - Base Camp can have clear mornings while Namche is drenched.

These are monthly averages. A single storm above 4,000m can shift conditions within hours. Always prepare one level worse than the forecast.

EBC Trek Temperature at Every Stop 

How cold is Everest Base Camp depends entirely on where you are on the trail. The table below covers every overnight stop.

Night temperatures at Kala Patthar are not listed separately, as most trekkers summit before sunrise and descend to Gorak Shep before dark.

Everest Base Camp Weather — Month by Month

EBC Trek Weather in January

The trail above Lobuche is consistently iced over in January. You need microspikes from Dingboche upward — crampons may be necessary above 5,000m after overnight snowfall. Confirm with your guide that the teahouses above Dingboche are open before leaving Namche.

Pros:

• Complete solitude — the quietest month on the entire EBC trail.
• Skies are often the clearest of the year, with exceptional visibility.

Cons:

• Extremely cold — Everest Base Camp temperature drops to -25°C at night.
• Several teahouses above 4,400m close entirely; limited services.

EBC Trek Weather in February

February is still a serious winter trek. The trail above Lobuche stays icy through the first two weeks. Wind chill at Kala Patthar can push perceived temperature to -30°C even when the thermometer reads -15°C. Your glove system matters more here than any other single piece of gear.

The second half of February is different — teahouses reopen above Dingboche, and the trail starts coming back to life.

Pros:

• The second half of February has off-season solitude with slightly improving conditions.
• Fewer crowds than in any spring or autumn month.

Cons:

• Upper trail remains dangerously icy through mid-February.
• Wind chill above Kala Patthar is at its annual worst.

EBC Trek Weather in March

March is when EBC weather by month shifts from winter to spring. The first two weeks are the quietest, good-condition window of the year. Rhododendrons start blooming at lower elevations from mid-March.

Logistics note: Lukla flights switch to Ramechhap Airport from March to May and Sept to November. Your departure day starts at 1:00–2:00 AM with a 4–5 hour road transfer east of Kathmandu. The Ramechhap flight is only 10 minutes and has lower cancellation rates than the Kathmandu flight. World Alpine Treks handles this transfer as part of your package.

Pros:

• Quieter trail than April or October — first two weeks especially uncrowded.
• Good trail conditions with rhododendron bloom starting mid-month.

Cons:

• Ramechhap transfer adds a pre-dawn road journey to your itinerary
• Nights above Tengboche are still cold; some teahouses are running reduced service

EBC Trek Weather in April

April is the month when Everest Base Camp temperature, visibility, trail conditions, and atmosphere all peak together. Rhododendron forests between Namche and Tengboche are in full bloom. At Base Camp, you walk among Everest expedition teams in final preparation for May summit attempts.

From the third week of April, afternoon clouds build. Get moving by 7:00 AM every day for the best photography and views.

Pros:

• Best combination of warmth, visibility, and trail scenery of any month.
• The active expedition atmosphere at Base Camp is unique in the spring.

Cons:

• Busiest spring month — trail and teahouses fill up quickly.
• Afternoon cloud build-up starts mid-month, limiting afternoon views.

EBC Trek Weather in May

May is the warmest month on the trail and the busiest. Summit season is at its absolute peak. Kala Patthar departure must be 4:00–4:30 AM — afternoon cloud closes in fast and will block your Everest view if you leave at 6:00 AM.

Pre-monsoon humidity arrives at lower elevations in the last week of May.

Pros:

• Warmest Everest Base Camp temperatures of the year — most comfortable at lower elevations.
• Summit season activity at Base Camp creates an unmatched atmosphere.

Cons:

• Cloud build-up is frequent and aggressive — tight summit window for Kala Patthar.
• Late May sees the first monsoon rains below Namche; build flexibility into return flights.

EBC Trek Weather in June

Below Namche in June, you are trekking in the rain most days. Leeches are active below 3,000m. Mountain views are blocked by cloud throughout the day.
Above 4,000m, the picture changes. The rain shadow of the Khumbu Valley's high ridges means Dingboche and Base Camp receive far less rain. Clear mornings at EBC are possible even during monsoon months.

Pros:

• Above 4,000m, EBC weather by month remains manageable, with clear mornings possible.
• Very few trekkers — complete solitude above Dingboche.

Cons:

• Lower trail (Lukla to Namche) is genuinely difficult — muddy, leech-active, and slow.
• Mountain views are blocked by clouds at lower elevations almost every day.

EBC Trek Weather in July

July is the wettest month on the lower trail. Landslide risk is at its annual high. Lukla flights have their worst cancellation rate of any month. You are not fighting cold — you are fighting wet.

Build two buffer days into your itinerary. This is standard planning, not extra caution.

Pros:

• Highest EBC daytime temperatures of the year — warmest Everest Base Camp weather.
• Packages run 15–20% cheaper than peak season.

Cons:

• 220mm of rainfall on the lower trail — worst trail conditions of any month.
• Worst Lukla flight reliability; landslide risk can close trail sections without warning.

EBC Trek Weather in August

From August 20th onwards, conditions improve quickly — packages still run 15–20% below peak season while the trail above Namche starts drying and flight reliability improves. By the last week of August, you are seeing early autumn clarity above 4,000m.

The first half of August is July continued. Two buffer days at Lukla remain standard.

Pros:

• Late August (20th onwards) offers improving autumn conditions at monsoon prices.
• The trail above Namche is already drying — above 4,000m is good from mid-August.

Cons:

• First half of August is peak monsoon — same challenges as July.
• Lukla flight delays remain frequent through mid-month regardless.

EBC Trek Weather in September

September is the most underrated month in EBC weather by month planning.

Post-monsoon air clarity improves week by week. Above Namche, the trail conditions are excellent from the second week onwards. By late September, you are getting October-quality visibility with a fraction of October's crowds.

• Private rooms available without booking pressure. 
• No queues at Sagarmatha checkpoint at Monjo
• Teahouses fully stocked and staffed

Pros:

• October-quality conditions from late September at significantly lower crowd levels.
• Cheaper packages than October with identical trail quality by month's end.

Cons:

• The first week of September still sees muddy lower trail and some wet sections.
• Monsoon doesn't always clear on schedule — need flexibility in the first two weeks.

EBC Trek Weather in October

October delivers the best Everest Base Camp trek weather of the year. The monsoon has washed the atmosphere clean, producing the clearest skies of any month. On a clear October morning, you can see Everest, Lhotse, Nuptse, Cho Oyu, Makalu, and Changtse simultaneously.

Two planning tips to beat the crowds:

• Start on a Tuesday or Wednesday — most group tours depart Friday to Saturday.
• Reach Kala Patthar before 6:00 AM — the pre-dawn summit has a fraction of the 7:00–8:00 AM crowd.

Pros:

• Best visibility and trail conditions of any month — the definitive EBC month.
• All teahouses open and are fully staffed from Lukla to Base Camp.

Cons:

• Busiest month on the trail — Namche to Tengboche section extremely crowded.
• Books up 3–4 months in advance; last-minute planning is difficult.

EBC Trek Weather in November

November gives you October's views with fewer people and a sharper cold. Skies are arguably clearer than in October - the atmosphere has been dry longer, producing an extraordinary contrast on the peaks. First seasonal snow dusting appears on upper ridges from mid-November.
After Tihar, the trail thins out significantly. The quieter, more contemplative quality of November is something experienced trekkers specifically come back for.

Pros:

• Clearer and more stable skies than October, with significantly fewer trekkers.
• October-quality conditions at lower booking pressure — one of the best-value months.

Cons:

• Temperatures drop sharply — Everest Base Camp temperature hits -15°C at night.
• Some teahouses reduce menus and staff from late November; confirm above Dingboche before leaving Namche.

EBC Trek Weather in December

December splits into two experiences. First two weeks: cold but manageable, clear days, most teahouses open. Flights operate from Kathmandu rather than Ramechhap. From mid-December, the trail above Dingboche becomes icy, microspikes are required, and teahouses begin closing.
If your itinerary puts you above 4,400m after December 15th, confirm every teahouse is open before leaving Namche.

Pros:

• First two weeks of December are excellent — clear skies, thin crowds, all services open.
• Flights from Kathmandu (shorter morning transfer than Ramechhap).

Cons:

• After December 15th, the trail above Dingboche becomes icy, and several teahouses close.
• Kathmandu valley fog creates a growing Lukla flight cancellation risk as the month progresses.

Wind on the EBC Trail 

Wind is the most underestimated variable in Everest Base Camp trek weather planning. Below 4,000m, it is rarely a problem. Above 4,500m, it changes everything.

By season:

• December–February: Winter jet stream pushes down to lower altitudes. -15°C air temperature becomes -30°C perceived temperature with sustained wind. A down jacket is not enough — you need a down suit covering your legs.
• May: Pre-monsoon jet stream shift drives strong upper-altitude winds above 5,000m. Kala Patthar's calm windows are narrower than in April.
• October–November: Most reliably calm months above 4,500m. Pre-dawn Kala Patthar mornings are typically still — the primary reason these months produce the best summit experiences.

Practical rule above Lobuche: Add 10–15°C to whatever the forecast wind chill figure says, and dress to that number before leaving your teahouse. Layering up on an exposed ridge is difficult and ineffective.

How Everest Base Camp Weather Affects Acclimatization

Cold, dry air above 4,000m accelerates fluid loss faster than most trekkers expect. At 4,500m, you lose significant moisture through breathing alone — dry Himalayan air pulls moisture from your lungs with every breath, even when you are not sweating.

This dehydration directly amplifies early AMS symptoms — headache, fatigue, disrupted sleep — in ways that can make it hard to identify the actual cause.

• Carry an insulated water bottle above 4,000m.
• Set a reminder to drink every 30 minutes — cold suppresses thirst.
• Do not skip rest days to "make up time".

Cold also increases perceived exertion. Above Dingboche, your body is doing two things simultaneously: managing temperature regulation and producing red blood cells for acclimatization. These compound each other.

A weather-forced rest day at Dingboche has helped more trekkers reach Everest Base Camp than it has stopped. Your body does not care about your itinerary.

Snow Risk by Month

• January — You face the highest snow risk of the year. Expect ice and compacted snow above 5,000m; you may need crampons at Lobuche and beyond.
• February — You will encounter icy conditions through the first two weeks. Plan for improvement in the second half of the month.
• March — Your risk drops significantly. You may see occasional light snowfall above 4,500m, but the main trail will stay manageable.
• April — You have very little to worry about. Only rare, light dustings occur at high elevations, and your trail will be clear at all trekking elevations.
• May – October — You can trek without any snow risk at any elevation throughout this entire period.
• November — You may notice a light dusting on upper peaks from mid-month onward, but your trail below Lobuche will remain unaffected.
• December — You will face icy conditions above 4,500m from mid-month. Pack microspikes — you will need them for safe footing.

Note: Above 5,000m, you can encounter unexpected snowfall during a storm in any month. A good guide will monitor overnight conditions and adjust your Kala Patthar departure time accordingly.

Lukla Flight Reliability by Month

Your most reliable flying window runs September through November — cancellations are rare, and conditions are at their best. March through May is also very good, though your flight departs from Ramechhap rather than Kathmandu, requiring a pre-dawn transfer of 4–5 hours.

January and February offer good reliability from Kathmandu, but KTM valley fog is your main risk. December is similar — flights operate from Kathmandu, but fog risk builds as the month progresses.

June marks the start of the monsoon, and cancellation risk rises with increasing cloud cover. July is the most unreliable month of the year — if you're flying then, build in a minimum of two buffer days. August improves quickly, with conditions turning fair to good from around the 20th onward.

Lukla flight operates from Manthali Airport, Ramechhap, from March to May and September to November. World Alpine Treks handles the pre-dawn transfer — typically a 1:00–2:00 AM departure — as part of every EBC package.

What to Wear — Gear Guide by Season

Spring (March–May)

• Moisture-wicking base layer (no cotton above 3,000m)
• Fleece mid-layer for lower trail
• Down jacket for above Tengboche and all evenings
• Rain jacket from mid-April
• Sleeping bag: -15°C

Autumn (September–November)

• Same layering system as spring
• Heavier insulation from October onwards
• Sleeping bag: -15°C for September/October, upgrade to -20°C for November
• Wind shell above Dingboche — mandatory regardless of month
• Warm gloves and a hat from Namche upward

Winter (December–February)

• Down suit — full-body coverage (legs as well as torso)
• Sleeping bag rated to -25°C for Gorak Shep
• Microspikes or crampons above Lobuche
• Balaclava for exposed ridges
• Goggles for wind and snow above Lobuche
• Hand warmers as glove backup

Monsoon (June–August)

• Full rain suit — jacket and trousers
• Pack liners for duffel and daypack
• Dry bags for electronics and camera gear
• Gaiters for lower trail
• Leech socks below 3,000m (standard socks offer no protection)
• Quick-dry fabrics only — no cotton

EBC Weather by Elevation 

Lukla — 2,860m: Lukla is the mildest point on the route. Use it as your comfort reference — it is the easiest weather you will experience on the entire trek. In winter, nights drop to -4°C but rarely feel extreme compared to what lies ahead.

Namche Bazaar — 3,440m: Night temperatures here run 5–6°C colder than Lukla even in summer. In October, daytime feels warm enough for a light fleece, but you need a down jacket the moment you stop moving after dark. In January, -10°C nights require a proper sleeping system — teahouse blankets are not sufficient.

Dingboche — 4,410m: Open valley, no tree cover, full wind exposure. Temperatures run 5–7°C colder than Namche at the same time of day. Above Dingboche, altitude stress and cold stress compound each other — your body manages temperature regulation and acclimatization simultaneously.

Gorak Shep and EBC — 5,164m to 5,364m: The thermometer reading is largely irrelevant here. Wind funneling down from Everest's upper ridges can push perceived temperature 10–15°C below air temperature. At Kala Patthar in October, with wind, wind chill before dawn reaches -25°C even when air temperature is -10°C. Be fully dressed before leaving your teahouse — not planning to layer up on the ridge.

Frequently Asked Questions

What is the temperature at Everest Base Camp?

It depends on your month. In October — the best month — Everest Base Camp temperature is around 2°C during the day and -12°C to -15°C at night. In January, it drops to -8°C days and -20 to -25°C nights. 

How cold is Everest Base Camp at Gorak Shep? 

Gorak Shep (5,164m) is the coldest place you will sleep on the trek. In January, nights regularly hit -25°C or lower. In October, -12°C to -15°C. Wind pushes the perceived temperature 10–15°C below the air temperature. Bring a sleeping bag rated to at least -20°C for any month above Namche — teahouse blankets are supplemental only.

Does it snow on the EBC trail?

Above 4,000m in winter, yes — serious enough to require microspikes from mid-December. January and February carry the highest snow risk; the trail above Lobuche can be fully iced over. October and April see virtually no snow on the trail. From mid-November, a light dusting appears on upper ridges — great for photographs, but does not affect the trail below Lobuche.

Is the Everest Base Camp trek weather predictable? 

In the main trekking seasons, yes. October and November are the most stable, consistent, clear mornings, and predictable cold nights. Spring is slightly less predictable above 5,000m due to wind. Outside peak seasons, conditions change quickly and require more itinerary flexibility.

How different is the Lukla weather compared to Base Camp? 

Very different. On a typical October day, Lukla is 13°C and sunny. EBC is 2°C with wind. At night, Lukla drops to 2°C while Gorak Shep hits -12°C to -15°C. That 2,500m altitude gap creates a completely different climate. Trekkers who judge the whole route from Lukla arrival conditions regularly underprepare for the upper sections.

What sleeping bag do I need for EBC?

• Spring/Autumn (March–May, September–October): -15°C rating
• November specifically: upgrade to -20°C
• Winter (December–February): -25°C above Dingboche Teahouse blankets above Namche are supplemental — do not rely on them to fill the gap.

When do Lukla flights run from Ramechhap?

March through November. In December and January, flights run from Kathmandu's Tribhuvan Airport. Ramechhap has lower cancellation rates than Kathmandu. Your departure from Kathmandu will be at 1:00–2:00 AM for the 4–5 hour road transfer. World Alpine Treks manages this as part of every EBC package.

Book Your EBC Trek with World Alpine Treks

We build every itinerary around your exact month — acclimatization schedule, gear list, teahouse bookings, and Lukla flight timing are all matched to the specific Everest Base Camp trek weather you will face on arrival.

Tell us your month, and we will send a day-by-day itinerary, gear list, and acclimatization schedule before you commit to anything.

See the full 15-Day EBC Trek Itinerary or WhatsApp Our Team 

Still deciding when to go? Read our full season comparison: Best Time for Everest Base Camp Trek.