Mount Everest Temperature, Weather & Climate: Complete Guide for Trekkers and Climbers

Kedar Neupane 5th Nov, 2025

Mount Everest — the highest peak on Earth — offers breathtaking beauty but extreme and unpredictable conditions. Whether you’re trekking to Everest Base Camp or preparing for the Mount Everest Expedition, understanding the mountain’s temperature, weather, and climate is crucial for safety and success. Below, we explore each key topic in detail to help you plan the perfect Himalayan journey.

 Mount Everest Temperature

Mount Everest’s temperature depends heavily on altitude and season. The higher you go, the colder it gets—dropping nearly 0.6°C for every 100 meters climbed.

• At Everest Base Camp (5,364 m), daytime temperatures can reach +10°C, while nights may fall to -15°C.
• On the Everest Summit (8,848 m), temperatures average -36°C, plunging to -60°C in winter.

Even in summer, the summit rarely rises above -20°C. Wind chill makes it feel much colder, so climbers must use high-altitude insulated gear.

Everest Base Camp Weather

Everest Base Camp (EBC) experiences dry, cold winters and relatively mild, sunny springs and autumns.

• Spring (March–May): Clear skies, bright sunshine, and temperatures from -10°C to +10°C.
• Autumn (September–November): Stable weather with great visibility, ranging from -5°C to +5°C.
• Winter (December–February): Harsh and freezing; Base Camp can drop to -20°C.

Trekkers in spring and autumn enjoy comfortable days and crisp, star-filled nights—ideal for photography and hiking.

Everest Climate

The Everest region has a polar tundra climate, marked by low humidity, strong winds, and freezing temperatures most of the year. The climate is influenced by:

• Altitude: The higher elevations have extremely low oxygen and subzero temperatures.
• Jet streams: High-speed winds dominate above 8,000 m during winter.
• Seasonal monsoon: Brings moisture from the Bay of Bengal in summer, creating rain below 4,000 m and snow above 5,000 m.

Despite its cold reputation, the lower valleys like Lukla and Namche Bazaar can feel pleasant, with lush greenery in summer and clear skies in autumn.

Mount Everest Temperature in May

May is one of the most popular months for Everest climbers and trekkers. It’s the main climbing season before the monsoon arrives.

• Base Camp: Around 0°C to +10°C during the day, dropping to -10°C at night.
• Summit: Around -25°C to -30°C, with lower wind speeds (20–40 km/h).

This short “weather window” in May provides the calmest, most stable conditions of the year—perfect for summit pushes.

Everest Summit Temperature

The Everest summit remains below freezing all year.

• Average: Around -36°C annually.
• Coldest months: January–February, dropping to -60°C.
• Warmest period: May and October, when it rises to -20°C or -25°C.

At this altitude, oxygen is only about 33% of sea level, and combined with freezing temperatures, climbers face risks like frostbite and hypothermia. Specialized high-altitude gear, oxygen masks, and layered clothing are mandatory.

Mount Everest Expedition Weather

For those joining the Everest Expedition, understanding the weather patterns between Camps I–IV is vital.

The main challenge is the jet stream winds, which can blow over 160 km/h. Climbers wait for short weather windows in late April and May when winds calm and skies clear.

 Best Time to Trek Everest Base Camp

The best seasons for trekking to Everest Base Camp are spring (March–May) and autumn (September–November).

• Spring: Warm days, blooming rhododendrons, and clear mornings.
• Autumn: Crisp air, stable temperatures, and crystal-clear mountain views.

Avoid: Summer (June–August) due to heavy monsoon rains, and Winter (December–February) due to extreme cold and icy trails.

Mount Everest Temperature by Month

Everest Region Climate

The broader Everest region (Khumbu Valley) ranges from lush sub-tropical forests at 2,800 m to icy glaciers above 5,000 m.

• Lower zone (Lukla–Namche): Mild, with temperatures between +5°C and +20°C in spring.
• Middle zone (Tengboche–Dingboche): Cool, dry air with rare rainfall.
• Upper zone (Lobuche–EBC): Arctic conditions and low oxygen levels.

This variety creates one of the most diverse mountain climates on Earth—lush greenery, rocky landscapes, and snowfields in one journey.

Mount Everest Weather Forecast

Modern expeditions rely heavily on satellite-based weather forecasts for summit planning. Meteorological experts provide:

• Wind speed at each camp level
• Snowfall and storm predictions
• Temperature variations and jet stream movement

Reliable forecasts are crucial for choosing safe summit windows. For trekkers, weather reports determine flight schedules to Lukla and visibility for scenic helicopter tours.

Conclusion

From the temperate valleys of Lukla to the icy winds at 8,848 meters, Mount Everest’s weather is both fascinating and formidable. Understanding its temperature, climate, and seasonal changes can make the difference between a safe, successful adventure and a dangerous miscalculation.

For the best experience, plan your Everest Base Camp Trek or Mount Everest Expedition with expert guidance from professional agencies like Actual Adventure Pvt. Ltd. — ensuring your journey to the world’s highest mountain is safe, well-timed, and unforgettable.

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