Best Time to Trek Everest Base Camp (2026)
Best time to trek Everest Base Camp is the seasonal window that lines up the clearest mountain visibility, the most stable Lukla flight operations, and the least extreme overnight cold, and for most trekkers that means spring or autumn.
Peak Season
Mar-May & Sep-Nov
Coldest Night
-22°C, Gorak Shep
Warmest Day
19°C, Lukla
Rainiest Months
Jun-Aug
Spring (March to May) and autumn (September to November) are the two peak trekking windows for the Everest Base Camp Trek. Both deliver daytime temperatures in the low teens Celsius at Namche Bazaar (3,440 m) and the lowest Lukla flight cancellation rates of the year, while winter and monsoon each trade one advantage for a real cost.
Spring and autumn aren’t identical, and the difference matters for planning. Spring adds Everest’s spring climbing season and blooming rhododendron forest below Namche. Autumn runs slightly drier and colder, with the clearest post-monsoon skies of the year. The season-by-season breakdown below covers both in full, alongside winter and monsoon for trekkers weighing a quieter, off-peak departure. For the full route and permit picture beyond season, see the complete Everest Base Camp Trek guide.
The Trekking Calendar at a Glance
Twelve months sort into three practical categories: peak season (spring and autumn), shoulder season (December through February), and monsoon (June to August), matching how Everest region agencies actually price and staff departures.
- Peak season
- Shoulder season
- Monsoon
Temperature by Month and Altitude
Temperature on the Everest Base Camp Trek depends on altitude as much as season. The gap between Lukla (2,860 m) and Gorak Shep (5,164 m) can run 20°C or more on the same calendar day, which is why a single expected-temperature figure for the whole trek is close to meaningless. The chart below breaks daytime highs and nighttime lows across four altitude tiers, from Lukla and Phakding up to Gorak Shep and Kala Patthar, for every month of the year.
January is the coldest month at altitude, with Gorak Shep nights averaging −22°C, while July and August are the mildest, with Lukla days reaching 19°C even as monsoon soaks the lower trail. Pack for the coldest night of your specific itinerary’s highest camp, not for the average conditions of the month as a whole. See the packing and gear guide for a full cold-weather kit list.
Season by Season
Spring (March–May)
Spring brings the clearest mountain views of the early season alongside blooming rhododendron forest below Namche Bazaar. Daytime temperatures at Namche Bazaar (3,440 m) typically reach 10°C in March, climbing to 15°C by May, and drop below freezing most nights regardless of the month. Gorak Shep (5,164 m) nights fall to −16°C in March and warm only to around −10°C by May. This is also the Everest climbing season, adding a lively Base Camp atmosphere with expedition teams alongside trekking groups.
Autumn (September–November)
Autumn is the most reliable season for stable weather and Lukla flight operations, arriving immediately after monsoon’s dust-clearing rains. Namche Bazaar daytime temperatures sit around 8-12°C through the season, and Gorak Shep nights fall from −9°C in September to −18°C by November as winter approaches. Visibility is typically best in late September and October, before high-altitude cloud starts building again toward December.
Winter (December–February)
Winter offers the clearest skies of the entire year but the coldest nights of any season. Gorak Shep can drop to −20°C or colder in January, and Namche Bazaar nights regularly fall to −8°C to −12°C. Trail and teahouse crowds drop dramatically, though some higher lodges reduce services or close entirely above Lobuche.
Monsoon (June–August)
Monsoon brings daily afternoon rainfall, leech activity at lower elevations, and the highest Lukla flight cancellation rate of the year, driven by persistent cloud cover rather than wind. Namche Bazaar stays a humid 17-18°C by day, and views above Tengboche are frequently obscured by afternoon cloud build-up. Most trekkers avoid this window entirely, though the By Road itinerary is itself not passable in monsoon due to road conditions in the lower hills.
Rainfall & Mountain Visibility
Rainfall on the Everest Base Camp Trek concentrates almost entirely in the four monsoon months. June through September brings rain on most afternoons at lower elevations, typically starting after midday and clearing by evening, while spring sees only occasional short showers and autumn runs close to fully dry. Winter stays dry too, though higher camps above Dingboche can pick up sudden snowfall events even during an otherwise clear week.
Morning visibility beats afternoon visibility on almost every day of the year, since cloud builds up from the valleys as the day warms regardless of season. The classic Kala Patthar (5,644 m) sunrise climb for Everest photographs isn’t a scenic tradition. It’s a direct response to how consistently afternoon cloud rolls in and blocks the summit view.
Late September through October offers the strongest combination of clear skies and mild-enough temperatures for extended photography stops at viewpoints like Kala Patthar and Everest View Hotel. Winter mornings can be even clearer, but the cold cuts photography sessions short fast.
Crowds & Trail Traffic
Trail and teahouse crowds track the peak-season calendar, not weather quality alone. Spring and autumn both see the Everest Base Camp Trek at its busiest, with Namche Bazaar, Dingboche, and Gorak Shep filling toward capacity around Nepal’s Dashain and Tihar festivals in October and around Everest Day on May 29, when independent trekkers without a pre-booked room can struggle to find space.
Guided trekkers rarely feel this pressure directly, since agencies pre-book teahouse rooms along the route weeks or months in advance. Independent trekkers traveling in peak weeks should book ahead at the busiest stops or plan to arrive early in the afternoon, before rooms fill for the night.
Winter and monsoon trails run close to empty by comparison. Rooms are available first-come, first-served at nearly every teahouse, and popular viewpoints like Kala Patthar can be climbed without another trekker in sight. That quiet comes at the cost of colder nights in winter and near-daily rain in monsoon, covered above.
Frequently Asked Questions
Weather & Temperature
Late September through October and March through April are considered the strongest single windows, combining stable weather, reliable Lukla flight operations, and manageable cold at altitude.
Crowds & Trail Traffic
Rain, Snow & Visibility