July is warmest with an average temperature of 58.82 °F at noon. January is coldest with an average temperature of 17.78 °F at night. Temperatures at night are significantly cooler than during daytime. Winter can have some frostdays, with the coldest month most often being January. November is on average the month with most sunshine. The wet season has a rainfall peak around July, and a dry season around November.
Weather in the Khumbu Region
As in all mountain regions, weather is most impacted by changes in elevation and topography. As you begin your expedition in Lukla, you consistently gain elevation and the temperatures gradually drop with each gain in altitude. The days are warmed by the mountain sun and nights get chilly.
Expect to start off the morning in a fleece or jacket and then shed or add layers as needed throughout the day. Snow is rare during the trekking season, but possible in the higher elevations. Getting ready to depart? Check the current weather along the route: