Nobody tells you Everest can only be climbed a few days a year, and the jet stream is why

Records & People For most of the year the jet stream sits on Everest’s summit. It lifts for a few weeks in May as the monsoon pushes it aside, and only then can… By Dawa Sherpa · Aug 29, 2026 Read the full story

Mount Everest can only be climbed for a handful of days each year, and the reason is a river of wind in the sky called the jet stream. For most of the year it sits directly on the summit, blasting the top of the mountain with sustained winds of 160 km/h and… Travel Himalaya Nepal · News Read the full story

The jet stream that owns the summit

The jet stream is a band of very fast, high-altitude wind that circles the planet at roughly the height of Everest's summit, around 9,000 m. For most of the year it flows straight across the Himalaya, and the top of Everest sits squarely in it. That is why… Travel Himalaya Nepal · News Read the full story

Why May opens the door

Everything changes when the South Asian monsoon begins its annual march north in late April and May. As that vast weather system advances, it nudges the jet stream off the Himalaya and up over the Tibetan Plateau to the north. With the jet gone, the winds… Travel Himalaya Nepal · News Read the full story

How forecasters pick the day

The pattern shifts year to year, and forecasters now model the jet-stream position days ahead so teams can time their push. But the fundamentals do not change: a usable window is measured in days, and the mountain grants only one or two of them per season. Travel Himalaya Nepal · News Read the full story

Why the window itself is dangerous

The cruel twist is that the same narrow window that makes Everest climbable also makes it crowded and deadly. When hundreds of people have spent weeks and fortunes waiting, and the forecast finally shows three calm days, everyone goes at once. That is exactly… Travel Himalaya Nepal · News Read the full story

See Everest in its own best season

You do not need the summit window to stand beneath Everest. Trek to Base Camp at 5,364 m and the Kala Patthar viewpoint in spring or autumn, when the Khumbu is at its clearest. Everest Base Camp Trek — 14 days &middot; the classic, well-acclimatised itinerary… Travel Himalaya Nepal · News Read the full story

Everest Base Camp Trek — 14 Days

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