You’ve probably already picked your Everest Base Camp trek dates in your head, or you’re staring at a calendar trying to figure out when to take time off work. Either way, the weather is likely the thing holding you back from booking.
- Will it be too cold at night?
- Will the views actually be clear, or will you spend two weeks staring into fog?
- Will the trail be so crowded you can’t get a teahouse room?
These are fair questions, and the answers all come down to which month you choose. This guide starts with the short answer on the best time to trek Everest Base Camp, then walks through Everest Base Camp weather for every month of the year, so you can plan with confidence instead of guesswork.
Best Time to Trek Everest Base Camp by Season
If you only take one thing from this guide, take this. The best time to trek Everest Base Camp is during spring, from March to May, or autumn, from September to November. Both seasons bring stable weather, clear skies, and comfortable temperatures, which is why most trekkers choose one of these two windows.
Here’s how all four seasons compare at a glance.
| Season | Months | Day Temperature | Night Temperature | What To Expect |
| Spring | March to May | 7°C to 18°C | Minus 12°C to 0°C | Warming days, blooming rhododendrons, busy trail by April |
| Summer / Monsoon | June to August | 15°C to 20°C | Mild but wet | Heavy rain, muddy trail, poor visibility |
| Autumn | September to November | 6°C to 17°C | Minus 10°C to 1°C | Clearest skies, busiest trail, especially October |
| Winter | December to February | 4°C to 6°C | Minus 14°C to minus 17°C | Extreme cold, quiet trail, teahouses may close at altitude |
Spring and autumn each have their own personality rather than one being simply better than the other. Spring is the trail coming back to life, rhododendrons blooming lower down, snow melting off the higher sections, and nights that are just a touch warmer than autumn offers. Autumn is the opposite kind of beautiful, crisp air, the clearest skies of the entire year, and mountain views that rarely disappoint. October usually takes the title of single best month for weather, though March deserves a mention too, since it gives you spring conditions without the crowd levels that build up by April.
Winter and monsoon, on the other hand, sit at the far ends of the calendar for a reason. Winter’s appeal is almost the inverse of its difficulty, brutally cold, yes, but the trail empties out and the skies stay remarkably clear. Monsoon flips that trade entirely, the temperatures are actually pleasant, but rain, mud, and clouds hiding the mountains make it the one season most trekkers choose to skip.
Daily Weather Pattern at Everest Base Camp
One thing that surprises a lot of first time trekkers is that the weather doesn’t just change month to month, it changes hour to hour, in a pattern that repeats almost every single day, regardless of the season.
Mornings are the calmest and clearest part of the day, with light winds and the best mountain views you’ll get. That holds through midday too, when the sun is strong and walking conditions are at their most comfortable. Things shift from around 1 to 2 PM onward, wind picks up and clouds start building over the higher peaks, and by evening, temperature drops fast and visibility is usually gone for the day. This is exactly why trekking days on the Everest Base Camp route always start early, guides plan around this window on purpose.
The strength of this pattern changes a bit depending on the season you’re trekking in.
- Spring shows it most reliably, clear mornings followed almost like clockwork by afternoon clouds
- Autumn follows the same clear morning rhythm, but the afternoon buildup tends to be lighter
- Winter keeps the pattern but adds sharp wind chill, and the coldest mornings can bring fog instead of clear skies
- Monsoon swaps clouds for rain, mornings stay mostly dry, afternoons usually don’t
Everest Base Camp Weather by Month
Everything you need to know about Everest Base Camp weather, month by month, season by season, and what it actually feels like on the trail.
Everest Base Camp Weather in January
The coldest month of the year, and it isn’t close. Nighttime temperature at Base Camp regularly falls to minus 17°C or lower, sometimes further during a hard cold spell, while daytime hovers around 4°C. Snow is common at higher elevation and a handful of teahouses near Base Camp shut their doors until spring. What you get in exchange is a trail that’s almost entirely yours, and on a clear day, the kind of sharp, uncluttered mountain view that autumn’s crowds never quite let you enjoy in peace. Experienced trekkers chasing maximum solitude sometimes use this window for the Everest Three Pass Trek, which sees almost no traffic this time of year.
- A proper minus 20°C rated sleeping bag isn’t optional this month
- Confirm which teahouses are open on your exact route before you go
- Clear skies are more common than you’d expect, this is a strong month for photography if you’re prepared for the cold
Everest Base Camp Weather in February
Winter is still in charge, but you can feel it starting to loosen its grip. Daytime edges up to around 6°C, nights stay brutal at minus 15°C, and snow is still a real possibility through the first half of the month. The shift shows up more in the trail than in the thermometer, by late February a few teahouses start reopening their doors and the first early season trekkers begin trickling through.
Everest Base Camp Weather in March
Spring technically starts here, though it takes its time announcing itself. Daytime temperature climbs to around 7°C while nights hold at minus 12°C, snow begins retreating off the trail, and teahouses that went dark for winter start lighting up again. What March offers that April can’t is a version of spring weather without the crowd. The season is arriving, but the surge hasn’t hit yet. Trekkers wanting more scenery within this quieter window often extend into the EBC with Gokyo Lake via Chola Pass route.
Everest Base Camp Weather in April
This is the month most people picture when they imagine trekking to Everest Base Camp. Daytime temperature reaches a comfortable 10°C, nights sit around minus 5°C, and the lower trail turns pink and red as rhododendron forests hit full bloom. Rivers that were frozen a few weeks earlier are running again, waterfalls come back to life, and the late afternoon light on Ama Dablam is some of the best you’ll see all year. It’s also expedition season, so teahouses fill with a mix of trekkers and climbers fresh off rotations on the Khumbu Icefall.
- Book teahouses and permits at least a month ahead, April fills up fast
- Best photography window is early morning before the 2 PM cloud buildup
- Pack for wide swings, cold mornings, warm afternoons at lower elevation
- If your schedule is tight, an Everest Base Camp helicopter tour is worth considering during this busy stretch
Everest Base Camp Weather in May
Warm and easygoing, with daytime temperature climbing to 15 or even 18°C and nights hovering close to 0°C. Early to mid May puts you right in the middle of Everest summit season, so Base Camp itself carries a different kind of energy, expedition teams making their final push, prayer flags snapping in the wind, a sense that something big is happening around you. By the back half of the month, afternoon showers start creeping in as monsoon approaches, so a light rain layer earns its place in your pack even on an otherwise clear looking day.
Everest Base Camp Weather in June
The last real trekking window before the monsoon takes over completely. Daytime temperature at lower elevation stays warm, between 15 and 20°C, but rainfall builds steadily as the month wears on. The first week or two are still genuinely good for trekking, after that, count on afternoons getting wetter with each passing day. If you’d rather skip the monsoon entirely this month, regions in the rain shadow like the Upper Mustang Trek stay dry even when the Khumbu doesn’t.
Everest Base Camp Weather in July
Peak monsoon, and honestly, one to avoid if your dates are flexible. Daytime temperature sits around 17°C, which sounds pleasant on paper, but heavy daily rainfall, slick muddy trail sections, and real landslide risk make this one of the hardest months to trek safely, let alone comfortably.
- Trails at lower elevation are prone to leeches, gaiters help
- Lukla flight delays are at their worst this month, build in extra buffer days
- If your dates are fixed here, working with an experienced, locally based Nepalese agency matters more than usual
Everest Base Camp Weather in August
More of the same from July, rain continues through most of the month and cloud cover regularly swallows the mountain views for days at a stretch. Trails stay slippery and slow going. The one silver lining is timing, by the very last few days of August you can start to feel the monsoon losing its grip, a preview of the clearer weather that’s coming. If cost matters more than timing for your trip, this off season stretch is also when some of our budget friendly treks in Nepal under $500 become genuinely worth considering.
Everest Base Camp Weather in September
Monsoon fades out and autumn quietly takes over. Early in the month some residual rain still shows up, but skies clear fast as the weeks go by, daytime settles around 17°C with nights near 1°C. Trekking in September means catching autumn right as it’s waking up, before October’s crowds arrive. Some trekkers arriving this early pair their trip with the Gokyo Lake Trek to see the turquoise lakes before peak season traffic builds.
Everest Base Camp Weather in October
If there’s one month that defines the Everest Base Camp trek in most people’s minds, it’s this one. Monsoon rain washes the dust and haze out of the air, leaving what trekkers often call diamond clear visibility, mornings where Everest, Lhotse, and Nuptse stand out razor sharp with nothing hazy in between. Sunrise from Kala Patthar in October is arguably the single best view the entire route has to offer. Daytime temperature runs around 12°C, nights drop to minus 5°C, and the trail is, without question, the busiest it gets all year.
- Book teahouses and permits well in advance, this is peak demand
- Expect a crowded Kala Patthar at sunrise, arrive slightly early to claim a good spot
- Not a solitude trip, this is the best photos, most reliable weather month
- Since prices rise alongside demand, check our full Everest Base Camp trek cost breakdown before locking in October date.
Everest Base Camp Weather in November
Autumn’s quieter final stretch. Daytime temperature falls to around 6°C and nights drop to minus 10°C, but the skies stay largely clear and the trail remains in good shape. The real appeal here is what’s missing, October’s crowds have mostly moved on, so teahouses are easier to book and the trail feels calmer without losing much of autumn’s visibility. If this is your first high altitude trek, our Everest Base Camp trek for beginners guide covers exactly what to expect during this quieter window.
Everest Base Camp Weather in December
Winter sets back in. Daytime hovers around 4°C, nights fall to minus 14°C, and days swing between properly clear and quietly foggy. December is trekkable with the right gear, and it draws a noticeably smaller crowd than the autumn or spring months around it, which suits trekkers who’d rather have the trail, and the mountains, mostly to themselves. If you want a quieter winter trek in a different valley entirely, the Manaslu Circuit Trek is another option worth comparing.
Things to Know Before Your Everest Base Camp Trek
A few weather related facts are worth keeping in mind no matter which month you choose.
- Altitude affects temperature more than the calendar does, Base Camp is often ten degrees or more colder than Namche or Lukla on the same day
- Weather at high altitude can change within hours, a clear morning doesn’t guarantee a clear afternoon
- Nighttime temperature drops fast once the sun disappears behind the mountains, even in warmer months
- Weather patterns shift a little from year to year, so treat the numbers in this guide as a reliable average rather than a guarantee
We’ve been guiding trekkers through these exact conditions for years, you can read more about our approach on our about us page.
What to Expect With Lukla Flights and Trail Conditions
Lukla flights are weather dependent, and delays or cancellations happen in almost every season, though they’re more common during monsoon and winter. Fog, wind, and low cloud cover near Lukla’s short mountain runway can ground flights even when Kathmandu itself is clear. If flight delays worry you, some trekkers choose to start their journey overland instead, and the Everest Base Camp trek from Salleri route is a solid way to avoid the Lukla bottleneck entirely.
- Build one to two buffer days into your itinerary for possible flight delays
- Expect firm, dry, dusty trails in the pre monsoon and post monsoon months
- Expect muddy, slippery sections during monsoon season
- Expect snow or icy patches at higher altitude during winter
During peak trekking season, spring and autumn especially, your flight to Lukla may not even leave from Kathmandu. To reduce congestion and improve reliability, flights are shifted to Manthali Airport in Ramechhap district, about four to five hours away by road. This means a very early start, most vehicles leave Kathmandu between 1 and 2 AM to reach Manthali in time for the first flight window.
It sounds like an inconvenience, and the wake up time certainly is, but flights from Manthali are actually more reliable than flights from Kathmandu during these months, since Manthali sits at a lower altitude with clearer, more consistent morning weather and has none of Kathmandu’s runway congestion to compete with. If your trek falls in March to May or September to November, expect this to be part of your journey, and if it falls in December through February, you’ll most likely fly directly from Kathmandu as usual.
Preparing for Everest Base Camp Weather Changes
Sun exposure at altitude is stronger than it feels, since thinner air offers less natural filtering. Dressing in layers is the most reliable way to handle Everest Base Camp weather, since temperature swings between day and night are large in every single month, not just winter.
- Sunscreen and eye protection matter even on cold, cloudy days
- A warm midday can turn into a genuinely cold evening within a couple of hours
- Layering beats packing one heavy jacket, since it adjusts as conditions shift
- For a full breakdown of exactly what to pack for each season, our Nepal trekking packing list covers this in detail
Frequently Asked Questions
What is the weather like at Everest Base Camp?
Everest Base Camp has a cold, high altitude climate that shifts a lot across the year. Daytime temperature ranges from around 4°C in the coldest months to around 18°C in the warmest, while nights are cold or freezing year round.
What is the coldest month at Everest Base Camp?
January is the coldest month, with nighttime temperature dropping to around minus 17°C or lower.
What is the best month to trek Everest Base Camp?
October is widely considered the best month, thanks to clear skies and stable weather. April is a close second.
Is it better to trek Everest Base Camp in October or April?
Both are excellent choices. October generally has the clearest skies and the highest number of trekkers, while April offers rhododendron blooms and comfortable daytime temperature.
Can you trek Everest Base Camp in winter?
Yes, but it requires proper cold weather gear and trekking experience, since nighttime temperature regularly drops below minus 15°C.
Can you trek Everest Base Camp during monsoon season?
Yes, it’s possible from June to August, but it’s not recommended for most trekkers due to heavy rain, muddy trails, and reduced mountain visibility.
Does it rain at Everest Base Camp?
Rain is mostly limited to the monsoon season, June through August. Outside these months, rainfall is low, and winter typically brings snow instead.
Why is the afternoon weather different from the morning at Everest Base Camp?
Mornings are usually calm and clear, while wind and cloud cover build up in the afternoon, generally from around 1 to 2 PM onward.
How windy does it get at Everest Base Camp?
Wind speed averages around 12 to 19 kilometers per hour for most of the year, picking up noticeably in the afternoon and becoming stronger at higher elevation.
How many daylight hours are there on the Everest Base Camp trek?
Daylight hours range from around 5 to 7 in the depths of winter to around 7 to 9 in spring and autumn.
Do Lukla flights get delayed by weather?
Yes, especially during monsoon and winter, when fog or low cloud cover near Lukla’s short runway can ground flights. Building buffer days into your itinerary is standard practice, and our team can help you plan around this, feel free to get in touch with any questions.
What should I pack for the weather at Everest Base Camp?
Packing depends on the season, but warm layers, a good sleeping bag, and rain or wind protection are essential year round.
