Weather in Nepal

Weather in Nepal

The weather in Nepal is almost moderate. But, in Northern Nepal (Mountain region) Summer(June-August) is cool and winter is severe. In the Southern parts of Nepal Summer is very hot while winters is mild to cold. In mountainous regions, hills, and valleys, summer are temperate while winters temperatures can decrease to negative. The southern plains experience a more tropical climate, while the higher Himalayan regions are much colder and can have harsh winter conditions.

In the Terai (Southern Part of Nepal) summer temperatures exceed 40° C and above some areas while winter’s temperatures range from 7°C to 23°C. The Kathmandu valley has pleasant climate with average temperature of 20°C to 35°C and 2°C to 12°C in the climax of winter. Overall, Kathmandu is blessed by cool and serene temperate and the climate. Therefore, Kathmandu is considered to be an ideal destination for relaxation and refreshment.  

Average temperatures in Nepal drop 6°C for every 1,000 m as you gain altitude

The Himalayas act as a barrier to the cold winds blowing from Central Asia in winter, and form the northern boundary which contributes monsoon rains. Some places like Manang and Mustang fall in the rain-shadow behind the mountains and are mostly dry. Eighty percent of all the rain in Nepal is received during the monsoon (June- half of September).It also offers a few muggy months with high humidity and high temperatures in southern part of Nepal. Winter rains are more pronounced in the western hills. The average annual rainfall is 1,600 mm, but it varies by eco-climatic zones, such as 3,345 mm in Pokhara and below 300 mm in Mustang.

There is no seasonal constraint on traveling in and through Nepal. Even in December and January, when winter is at its severest, there are compensating bright sun and brilliant views. As with most of the trekking areas in Nepal, the best time to visit are during spring and autumn. Spring is the time for rhododendrons to bloom while the clearest skies are found after the monsoon in autumn (September, October and November). However, Nepal can be visited the whole year round.

Nepal experiences four distinct seasons in a year 

Spring (March to May): Spring is a popular time to visit Nepal, as the weather is mild and pleasant. The temperature starts to rise, and the landscape becomes vibrant with blooming flowers and greenery.

The temperature in mountain region in Spring ranges between 4-20°C; in Kathmandu Valley, it ranges between 20-34°C. Unlike that, in Terai belt, it the temperature in Spring ranges between 30-44°C. So, Spring in Kathmandu Valley and Himalayan region is cool but it will very hot in Terai belt like in Chitwan  and Lumbini. 

Summer (June to August): The summer season in Nepal is characterized by monsoon rains. It is the wettest time of the year, with heavy rainfall, particularly in the southern region. The monsoon can bring flooding and landslides, affecting transportation and trekking routes. So, it is not considered to be a good trekking season in Nepal. However, some short treks and hikes around the city area like Kathmandu and Pokhara can still be done. 

The temperature in Summer in Himalayan belt ranges between 3-21 °C; in Kathmandu valley , it ranges between 18-29 or sometimes more than that. Terai is very hot in Summer too. The temperature in Terai belt in Summer ranges between 30-45°C.   

Autumn (September to November): Autumn is another favorable season for tourism in Nepal. The weather is clear, and the skies are usually free of rain clouds. This is an excellent time for trekking and outdoor activities, with moderate temperatures during the day and cool nights.

The temperature in Autumn in Nepal’s Himalayan region ranges between 2-20; sometimes, at the end of the Autumn, it even drops negative. It actually happens when it is about to switch from Autumn to Winter. It’s the beginning of the winter. 

But in Kathmandu Valley, the Autumn is very mild and perfect. The temperature ranges between 7-25 °C. But in Terai belt, the temperature ranges between 15-35 °C. 

Winter (December to February): Winter in Nepal is generally dry, with cold temperatures, especially in the higher altitudes. In the places like Kathmandu and Pokhara, the days are still pleasant, but it can get quite chilly during the nights. Snowfall is common in the mountainous regions, making it a good time for trekking in some areas. 

The temperature in Himalayan region in winter in Nepal ranges between negative to 15°C. Himalayan region at the climax of Winter (January) is severe. It is because it snows a lot making the life absolutely troublesome. Actually, people traveling in winter are interrupted by massive snowfall in mid winter. Therefore, it is suggested not to make any kind of long and challenging trekking trips in Nepal in the mid winter. 

However, the Kathmandu Valley has got the temperature between 5-22 °C. The life is not as harder as in the mountain region during winter in Nepal. 

The temperature in Terai belt of Nepal in winter ranges between 6- 27 °C. Sometimes, Terai is entirely covered with fog and it doesn’t let the sunrays lay down to the earth. In these times, the lives will be miserable too. 

 Keep in mind that Nepal's weather can vary significantly depending on the region and altitude. 

Weather of Everest region 

The Everest region, also known as the Khumbu region, is a high-altitude area in northeastern Nepal, renowned for being home to Mount Everest, the world's highest peak. The weather in the Everest region is strongly influenced by its high elevation and the Himalayan climate. Here's an overview of the typical weather patterns in the Everest region:

Spring (March to May): Spring is one of the best times to visit the Everest region. The weather is generally stable, and temperatures start to warm up. The days are pleasant, with temperatures ranging from around 5°C (41°F) to 15°C (59°F) in lower elevations. As you ascend higher, temperatures drop, and you can expect sub-zero temperatures at night. This season offers clear skies and excellent visibility, making it ideal for trekking and climbing activities.

Summer (June to August): The summer months coincide with the monsoon season in Nepal. During this time, the Everest region experiences heavy rainfall, making trekking and climbing challenging due to slippery trails and increased risk of landslides. The temperatures at lower elevations can still be relatively warm, but the monsoon rains bring high humidity and limited mountain views.

Autumn (September to November): Like spring, autumn is another popular time for trekking and climbing in the Everest region. The weather is stable, and the skies are generally clear. Daytime temperatures in lower elevations are pleasant, ranging from 5°C (41°F) to 20°C (68°F). Nights get colder as you go higher in altitude, so warm clothing is essential. The visibility is excellent during this season, offering stunning views of the surrounding peaks.

Winter (December to February): Winter brings cold temperatures and a significant drop in the mercury, especially at higher elevations. Daytime temperatures in lower regions can still be around 5°C (41°F), but at night, they can plunge well below freezing. Winter treks in the Everest region are possible but require proper preparation for the cold weather. The skies are usually clear, and the region experiences less rainfall, but snowfall is common in higher areas.

It's important to note that the weather in the Everest region can be unpredictable, and conditions can change rapidly, especially at high altitudes. Trekkers and climbers must be prepared for various weather scenarios and should always check weather forecasts before embarking on their journey. Proper trekking preparations are very important for a safe and enjoyable experience.

Weather of Annapurna Region

The Annapurna region is another popular trekking destination in Nepal, located in the north-central part of the country. It is named after the majestic Annapurna mountain range, which includes several peaks over 7,000 meters and the 10th highest peak in the world, Annapurna I. The weather in the Annapurna region is influenced by its altitude and the typical Himalayan climate. Here's an overview of the weather patterns in the Annapurna region:

Spring (March to May): Spring is one of the best times to visit the Annapurna region. The weather is generally mild and pleasant, with warm days and cool nights. Daytime temperatures in lower elevations can range from 15°C (59°F) to 25°C (77°F), while nights can drop to around 5°C (41°F). As you ascend to higher altitudes, temperatures decrease, and nighttime temperatures can fall below freezing. Spring brings clear skies and excellent visibility, making it an ideal time for trekking and enjoying the blooming rhododendron forests along the trails.

Summer (June to August): The summer months coincide with the monsoon season in Nepal. During this time, the Annapurna region experiences heavy rainfall, which can lead to slippery trails, leeches, and increased risk of landslides. Trekking during the monsoon can be challenging, and the mountain views are often obstructed by clouds. Daytime temperatures can still be relatively warm in lower regions, but the humidity can be high. Monsoon waterfalls are often characterized by their increased flow and vigor compared to other times of the year. The surrounding landscape becomes lush and green due to the abundance of water, creating a stunning sight for visitors. Many waterfalls that may be relatively modest during dry seasons transform into magnificent cascades during the monsoon months. While monsoon waterfalls can be awe-inspiring, it's essential to be cautious when visiting them during the rainy season.

Autumn (September to November): Like in the Everest region, autumn is another popular time for trekking in the Annapurna region. The weather is stable, and the skies are usually clear. Daytime temperatures are pleasant, ranging from 15°C (59°F) to 20°C (68°F) in lower elevations. Nights get colder as you ascend higher, and temperatures can drop below freezing. The visibility is excellent during this season, providing stunning views of the Annapurna peaks.

Winter (December to February): Winter in the Annapurna region brings cold temperatures, especially at higher altitudes. Daytime temperatures in lower regions can still reach around 10°C (50°F), but nights can be freezing. At higher elevations, temperatures drop well below freezing, and snowfall is common. Winter treks in the Annapurna region are possible, but trekkers need to be well-prepared for the cold weather and potential snowy conditions.

As with any trekking destination in Nepal, the weather in the Annapurna region can be unpredictable, and conditions can change rapidly, especially in the mountainous areas. Trekkers should always check weather forecasts and be prepared for various weather scenarios to ensure a safe and enjoyable experience.