The weather and temperature during the Everest Cho La Pass Trek vary significantly from lower to higher altitude regions. Nepal experiences four seasons annually. Choosing the right season for the trek helps to enhance your trekking experience. Spring and autumn are the best times with excellent weather conditions. Meanwhile, the weather and temperature in summer and winter are not ideal for the trek.
Here is a brief on each season’s weather and temperature for the Cho La Pass Trek via EBC:
Spring (March to May)
Spring is one of the best times for the Everest Cho La Pass Trek. The weather is lovely, sunny, and bright, with moderate temperatures. In early spring, the weather is still cold, with some snow remaining in the higher-altitude areas. The temperature gradually increases as the season progresses. The average temperature ranges from 1 to 12 degrees Celsius during this time of the year. Similarly, the daylight hours also get longer in spring, so you can enjoy the journey at your own pace.
Furthermore, there is very little rainfall at this time, and visibility is extremely clear. Therefore, the flights are less likely to be delayed or canceled. You can also enjoy the best views of mountain panoramas and scenic landscapes, as spring is the most active time for flora and fauna. The rhododendron forests and different wildflowers are in full bloom. There are also higher chances for you to spot rare wildlife in Spring, making the time best for trekking in EBC via Cho La Pass.
Summer (June to August)
Only a few trekkers are on the journey during the summer season. It is an off-season for trekking, and the monsoon also enters the country at the same time. The monsoon season brings heavy rainfall across the lower hilly regions. Hence, the forest areas are wet, muddy, slippery, and infested with leeches. Similarly, there is a risk of floods and landslides.
In lower areas, the days are hot and humid. The average summer temperature is 10 to 20 degrees Celsius. Due to heavy rainfall and dark grey clouds, visibility is extremely poor. As a result, flights to and from Lukla often get delayed or canceled. Yet, due to the fewer number of trekkers, the accommodations usually offer discounts during the summer season. However, it is best to avoid the summer season for the Everest Cho La Pass Trek.
Autumn (September to November)
If there is a perfect season for the Cho La Pass with the Everest Base Camp Trek, it is autumn. The season is a peak trekking time with the best weather and mild temperatures. By mid-September, the monsoons also leave Nepal. The monsoon rainfall leaves the vegetation and the landscapes fresh, colorful, and lush. The weather is sunny, with crisp skies and excellent visibility. Similarly, the average daytime temperature ranges between 10 and 20 degrees Celsius. The temperature drops slightly and becomes chillier during nighttime and mornings.
Autumn is the best time to get the crystal-clear views of the mountain panoramas and green-toned landscapes of the Everest region. The stable weather and climatic conditions make autumn the favorite time for trekkers. As a result, the routes are crowded, and accommodations are often fully booked. Flights and accommodations can get expensive. So, if you are thinking of trekking in autumn, book your flights and accommodations in advance.
Winter (December to February)
Winter is also an off-season for the Everest Cho La Pass. As winter begins, the weather turns colder, and snow starts to fall at higher elevations. The temperature continues to drop as the season progresses. The days are generally cold, but the nights are bitterly cold. Thick fog is also common during early mornings. The daytime temperature is around 5 to 10 degrees. Meanwhile, the nighttime temperature can drop below the freezing point.
The higher regions of Everest receive a lot of snow during winter, which can block the high mountain passes. There are also snowstorms and the risk of avalanches while trekking in Winter. Due to harsh weather conditions, many accommodations in high-elevation regions close during winter. The cold weather conditions and snow-covered route add to the difficulty. Despite the challenges, many seasoned and experienced trekkers prefer to trek at this time. Trekking in winter requires careful preparation, equipment, and trekking gear. Hence, it is not recommended for beginners.