In Nepal, there are different climates according to altitude: the sub-tropical climate with a rainy season in the southern flat strip, the temperate climate of low mountains, and the cold mountain climate of the Himalayas.
Rainfall is abundant in the period of the summer monsoon (June to early October), which, however, penetrates with difficulty in some sheltered inland valleys and on the northern slopes. On the southern slopes, at equal altitude the east is rainier than the west.

Index

---

• The plain - Nepalganj
• The Himalayas - Pokhara, Kathmandu
• Cyclones
• Best Time
• What to pack

The plain

---

In the thin southern plain, a region known as Terai, the climate is that of the Indo-Gangetic plain, which is also found in northern India. In winter, it's sunny and mild, with an average temperature around 15 °C (59 °F) in January, pleasantly warm during the day but cool at night, sometimes even cold. In March, the temperature rises considerably and it begins to be hot, while from April to June there's a scorching heat, and highs can reach or exceed 40 °C (104 °F).

Nepalganj

Here are the average temperatures of Nepalganj (or Nepalgunj).

In June, the summer monsoon arrives, characterized by heavy rains, in the form of downpours and thunderstorms. The monsoon arrives first in the east, in early June, while in the west it comes in the middle of the month or so. The temperature decreases, the maximum dropping to around 32 °C (90 °F) in July and August, but the humidity increases, making the heat muggy. The rains are intense especially in July and August, when they exceed 300 millimeters (12 inches) per month, but in certain areas at the foot of the mountains, especially in the east of the country, they can exceed 600 mm (23.5 in) per month.
Here is the average precipitation in Nepalganj.

The monsoon starts to withdraw from early October in the west, and about a week later in the east. The weather returns to be sunny, and even though October is still a hot month, the humidity decreases and the temperature at night becomes a bit cooler.
In the easternmost part of the flat area (see Biratnagar), the heating in the period from March to June is limited, in fact the average maximum temperature does not go above 33/34 °C (91/93 °F) in April and May. Here, already in the second half of April, the first afternoon thunderstorms occur, prior to the arrival of the monsoon itself.

The Himalayas

---

Above 800/1,000 meters (2,600/3,300 feet), the climate is temperate, while the rainfall pattern is the same.

Pokhara

In Pokhara, at 800 meters (2,600 feet), the average ranges from 13.5 °C (56 °F) in January to 26 °C (79 °F) in July and August.

Pokhara is the rainiest city of Nepal because it is located at the foot of the Annapurna Range, where the southern currents that prevail in summer are forced to rise when they encounter the mountain slopes. In fact, rainfall amounts to 3,900 mm (153 in) per year, including up to 940 mm (37 in) in July, and 865 mm (34 in) in August. However, here too in winter the rains are rare, but there can be some atmospheric instability already in spring, with significant thunderstorms in April and May. Here is the average precipitation.

Kathmandu

In the capital, Kathmandu, at 1,400 meters (4,600 feet) above sea level, the climate is mild. The average January temperature is around 11 °C (51.5 °F), but the temperature range is high, so it gets cold at night, while during the day the sun makes the air mild. Summer is hot, with highs around 27/29 °C (81/84 °F) for a long period, from April to September. Here are the average temperatures.

Annual rainfall amounts to 1,400 mm (55 in), of which 115 mm (4.5 in) fall already in May (due to thunderstorms preceding the monsoon), up to 360 mm (14.2 in) in July, which is the rainiest month, still 185 mm (7.3 in) in September, and 60 mm (2.4) in October, concentrated in the first part of the month, before the monsoon withdraws. During the monsoon period, the sky is often cloudy, so it's difficult to spot the highest mountains of the Himalayas. Here is the average precipitation.

In Kathmandu, and in Nepal in general, the sun shines quite often in winter and very often in spring, before the monsoon, while in the rainy season, especially from July to September, the sky is often cloudy.



Going up in altitude, temperature and rainfall vary not only with altitude, but also with slope exposure, however, since most of the mountains of Nepal are situated on the southern side, the temperature is relatively mild even at high altitudes.
Here are the average temperatures of Jumla, located at 2,300 meters (7,500 ft).

In inland areas, the summer monsoon penetrates with more difficulty, so much so that precipitation doesn't go above 100/150 mm (4/6 in) per month in the rainiest months, which are even here July and August. Some particularly sheltered inland valleys receive still less rainfall, and have a desert or semi-desert landscape, such as the kingdom of Mustang, which is located in an arid valley north of the massifs of Annapurna and Dhaulagiri.

Usually, the average temperature in January drops below freezing (0 °C or 32 °F) above 3,000 meters (9,800 ft). Above 3,600 meters (11,800 ft), the subarctic climate zone begins, that is, where the average temperature of the warmest month does not exceed 10 °C (50 °F).
The perennial snows in Nepal are found at very high altitudes, around 6,000 meters (20,000 feet).

In Nepal, some of the highest mountains on Earth are found: Mount Everest, the highest, with its 8,848 meters (29,029 feet), on the border with China; Kanchenjunga, the third highest mountain in the world, 8,586 meters (28,169 feet), on the border with the Indian state of Sikkim; Lhotse, the fourth, 8,516 meters (27,940 feet), located just 3 kilometers (2 miles) south-east of Everest and still on the border with China; Makalu, the fifth, 8,481 meters (27,766 feet), 20 km (12 mi) south-east of Evererst and still on the border with China; Cho Oyu, the sixth, 8,201 meters (26,906 feet), 28 km (17 mi) north-west of Everest and still on the border with China; while in the interior of Nepal, we find Dhaulagiri, the seventh, 8,167 m (26,795 ft); Manaslu, the eighth, 8,156 m (26,759 ft) high, and Annapurna, the ninth, 8,091 m (26,545 ft) high.
In the base camp of Everest, in the Khumbu glacier, 5,300 meters (17,400 ft) above sea level, only 450 mm (17.5 in) of rain or snow fall per year. Here the average temperature is around -18 °C (0 °F) in January, and -2 °C (28 °F) in July, while at the Everest's summit it's around -36 °C (-33 °F) in January and -18 °C (0 °F) in July. On the highest peaks of Nepal, terrible wind storms occur, especially in winter.

Tropical cyclones

---

Nepal is too far from the sea to be directly hit by tropical cyclones, but the remains of cyclones affecting India, which usually come from the Bay of Bengal, can cause heavy rains in the Nepalese plains as well as snow in the mountains, as happened on October 14, 2014, when heavy snowfalls produced avalanches in the Annapurna and Dhaulagiri areas, as a result of the approach of the remains of Cyclone Hudhud. In order to avoid these accidents, it is advisable to consult the weather forecasts and the official warnings, as well as to rely on local expert guides.
Cyclones typically occur from mid-April to early December, and most likely in May-June and October-November.

Best Time

---

The best time to visit Nepal in its entirety runs from November to February in order to avoid the summer monsoon, but also the heat on the plains, which is intense from March to October.
If you want to visit Kathmandu and especially to go trekking in the mountains, you may choose spring and autumn, especially in March and April, and from mid-October to mid-November, ie the periods when it is possible to avoid the winter cold as well as the mud due to summer rains. Autumn is the best period, since it is the least rainy, besides the atmosphere is particularly transparent, to the point that you can see the snow-capped mountains at great distances.
If you want to go hiking in a snowy landscape, you must go in winter and above 3,000 meters (10,000 feet), though being a dry season, it is not guaranteed that in a given period it snows. Occasionally, around this altitude it can also snow in spring and autumn. To be sure to see the snow, you have to go to the base camp of Everest or Annapurna, which, however, can only be reached after days of trekking.
In Kathmandu, even though the winter nights are cold, it practically never snows, but in winter it can sometimes snow on the Shivapuri national park, at 2,400 meters (7,800 ft) north of the city, on Phulchowki, a 2,700 meter mountain (8,900 ft) south of the city, or in Daman, at 2,300 meters (7,500 feet), south-west of Kathmandu.
It's more likely that it snows in Kalinchok, at 3,400 meters (11,000 feet) near Kathmandu, and a bit more difficult in Ghorepani, at 2,800 meters (9,200 feet) near Pokhara and at the foot of Annapurna.

In general, expeditions for Mount Everest and the highest peaks are organized in two periods, from May 20th to June 5th, and from October 1st to October 20th, when the temperature on the summit of Everest is around -25/-27 °C (-13/-17 °F), and it's possible to take advantage of the only two favorable periods, between the cloudiness and the snowfalls that occur in summer and the wind storms that occur in winter. However, in the high mountains the weather can vary greatly depending on meteorological situation, so it's better to check the forecast for the following days, and in any case, to rely on expert guides.

What to pack

---

In winter: in the plains, bring spring/autumn clothes, light for the day, a jacket and a sweater for the evening. In Kathmandu and Pokhara, spring/autumn clothes for the day, warm for the evening, a jacket, a hat, a scarf, sunglasses, sunscreen. Above 2,000 meters (6,500 feet), warm winter clothes, a down jacket, hiking shoes. At higher altitudes, outfit for the big cold, synthetic thermal long underwear, gloves, a parka, a hat, a scarf.
In summer: for the plains, bring lightweight clothing of natural fibres, a light raincoat or umbrella. In Kathmandu and Pokhara, light clothing, a sweatshirt for the evening, a raincoat or umbrella. Above 2,000 meters (6,500 feet), spring/autumn clothes, a sweater and a jacket for the evening. At the highest altitudes, a fleece, a wind jacket, a down jacket, a hat, gloves, a scarf. For overnight stays outdoors, a sleeping bag, a warm jacket.

Back to top