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Climate in Nepal


Average weather, temperature, rainfall, sunshine

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Map - Nepal

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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 in the low mountains, and finally, the cold mountain climate in the peaks 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.

The climate in detail


  • The plain - Nepalganj
  • The Himalayas - Pokhara, Kathmandu, Jumla, Namche Bazaar, highest peaks
  • Cyclones
  • When to go
  • What to pack
  • Climate data

The plain



In the thin southern plain, a region known as Terai (see Dhangadhi, Siddharthanagar, Nepalganj, Birganj, Janakpur, Biratnagar), the climate is that of the Indo-Gangetic plain, which is also found in northern India. In winter, it's sunny and mild, pleasantly warm during the day but cool at night, sometimes even cold. The average temperatures in January is around 15 °C (59 °F). Sometimes fog can form.
By March, the temperature rises considerably and it begins to be hot, while from April to June it's scorching hot, and highs can reach or exceed 40 °C (104 °F).
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, with the maximum dropping to around 33 °C (91 °F) in July and August, but the humidity increases, making the heat muggy.
Rainfall ranges from 1,400 to 1,800 millimeters (55 to 70 inches) per year, and is intense especially in July and August, when it exceeds 300 mm (12 in) per month, but in certain areas at the foot of the mountains, especially in the east of the country, it can exceed 600 mm (23.5 in) per month.

Nepalganj

Climate chart - Nepalganj
In Nepalganj (or Nepalgunj), located in the southwest near the border with India, in winter, from mid-November to late February or early March, nights are cool, and sometimes even cold. In January 2013, the temperature dropped to 0 °C (32 °F).
In addition, from November to February, fog can form at night and in the early morning. The fog usually dissolves during the day, however, in these situations, it can sometimes be cool even during the day, with highs of 14/15 °C (57/59 °F), and sometimes even below.
From mid-March to mid-June, before the monsoon, it is very hot. The temperature reached 45 °C (113 °F) in June 1995.
The monsoon starts to withdraw by 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 night temperature becomes a bit cooler.

In the easternmost part of the flat area (see Biratnagar), the increase in temperature 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

Climate chart - Pokhara
In Pokhara, at 800 meters (2,600 feet), the average temperature ranges from 13.5 °C (56 °F) in January to 26 °C (79 °F) in July and August.
In winter, the temperature can drop to around 0 °C (32 °F) on colder nights. Sometimes fog can form. During the day, temperatures are very similar from April to September.
The highest temperatures of the year typically occur before the monsoon, in May and sometimes in April, albeit for short periods.
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 840 mm (33 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.

Kathmandu

Climate chart - 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. Sometimes the temperature can drop as low as 0 °C (32 °F) or slightly below. The coldest record is -3.5 °C (25.7 °F) and was set in January 1978. Also, fog can form at night.
Summer is hot, with highs around 27/29 °C (81/84 °F) for a long period, from April to October. Generally, the highest temperatures of the year are recorded before the monsoon, in May and sometimes in April, with highs of around 35 °C (95 °F).
Annual rainfall amounts to 1,500 mm (59 in), of which 130 mm (5.1 in) fall already in May (due to thunderstorms that precede the monsoon), and up to 385 mm (15 in) in July, which is the rainiest month. In September, still 205 mm (8 in) of rain fall, and 45 mm (1.8) in October, concentrated in the first part of the month, before the monsoon withdraws.
In Kathmandu, and in Nepal in general, the sun shines quite often in winter and very often in spring, before the monsoon. In contrast, in the rainy season, especially from July to September, the sky is often cloudy, so it's difficult to spot the highest mountains of the Himalayas.

Kathmandu

Going up in altitude, both temperature and rainfall vary with altitude. In theory, they also vary 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. However, above 2,000 meters (6,500 feet), in winter, the temperature often drops below freezing at night.

Jumla

Climate chart - Jumla
In Jumla, located at 2,300 meters (7,500 ft), the average in January is 4.5 °C (40 °F), but with a strong temperature range, so the minimum temperatures drop to almost -5 °C (23 °F).
In the areas closed between the mountains, the summer monsoon penetrates with more difficulty. In Jumla, only 805 mm (31.7 mm) of rain fall per year.

Namche Bazaar

Climate chart - Namche Bazaar
At higher altitudes, it gets even colder. In Namche Bazaar, located at 3,450 meters (11,300 ft) above sea level, the average in January is 0 °C (32 °F), while that of July and August is 12 °C (53.5 °F).
Precipitation amounts to 1,100 mm (44 °F) per year. Even though the winter is dry, it can sometimes snow.

Some particularly sheltered inland valleys receive an even lower amount of 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.

Highest peaks

Going up in altitude, 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 subpolar 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).
Everest, where is located
Everest, where is located
In Nepal, some of the highest mountains on Earth are found: Mount Everest is the highest, with its 8,848 meters (29,029 feet), on the border with China. The only mount outside Nepal is K2, which is located in the northwest, on the border between China and Pakistan.
The other highest mountains in Nepal are: 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 Mount Everest and still on the border with China; Makalu, the fifth, 8,481 meters (27,766 feet), 20 km (12 mi) south-east of Mount 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 Mount Everest and still on the border with China; Dhaulagiri, the seventh, located in the interior of Nepal and not at the border, 8,167 m (26,795 ft); Manaslu, the eighth, 8,156 m (26,759 ft), and Annapurna, the ninth, 8,091 m (26,545 ft).

Everest

At the base camp of Mount 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.
For example, on October 14, 2014, heavy snowfalls caused 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, but they are most likely in May-June and October-November.

When to go



The best time to visit Nepal in its entirety runs from November to February, to avoid the summer monsoon but also the heat of the plains, which is intense from March to October.

If you want to visit Kathmandu, and especially if you want 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, in addition, 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 have to go in winter and above 3,000 meters (10,000 feet), though being that it's 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. However, in winter, it can sometimes snow on the Shivapuri national park, at 2,400 meters (7,800 ft) above sea level and north of Kathmandu, on Mount Phulchowki, at 2,700 meters (8,900 ft) and south of the city, or in Daman, at 2,300 meters (7,500 feet) and south-west of the city.
It snows more often in Kalinchok, located at 3,400 meters (11,000 feet) near Kathmandu, and a bit more rarely in Ghorepani, located at 2,800 meters (9,200 feet) near Pokhara and at the foot of Annapurna.

In general, expeditions for Mount Everest and the other highest peaks are organized in two periods, from May 20th to June 5th, and from October 1st to October 20th. In these two periods, the temperature on the summit of Mount 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 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 fibers, 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. A sleeping bag and a warm jacket for outdoor overnight stays.

Climate data - Nepal


Temperatures: °C, Precipitation: mm
Biratnagar
Biratnagar, location on the map
Biratnagar, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.91216212425262625211611
Max temp.222631343433333333323025
Precip.101015601703054753552707555
Prec. days12241015191614400
Day length111112131414141312121110

Birgunj
Birgunj, location on the map
Birgunj, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.81014192325262624201410
Max temp.212631353534333333322924
Precip.1515154013527555042026070510
Prec. days2224913191612301
Day length111112131414141312121110

Ghorahi (665 meters)
Ghorahi, location on the map
Ghorahi, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.691318212323232116117
Max temp.212429333433303030292622
Precip.20252030902504204302355055
Prec. days2223714222115400

Jomsom (2,745 meters)
Jomsom, location on the map
Jomsom, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-2-12481214141262-1
Max temp.101215192123232321181512
Precip.1520302020304545352055
Prec. days2344461096210

Jumla (2,300 meters)
Jumla, location on the map
Jumla, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-5-3148131616135-1-5
Max temp.141519222426252525221916
Precip.35455040508018018095251010
Prec. days4457911212113311

Kathmandu (1,400 meters)
Kathmandu, location on the map
Kathmandu, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.3591216192020191484
Max temp.192226292930292929272420
Precip.1525406513024038534521045510
Prec. days23471217232315401
Humidity72%65%59%59%66%76%83%84%82%75%73%72%
Day length111112131414141312121110
Sun hours6681076334666

Namche Bazaar (3,450 meters)
Namche Bazaar, location on the map
Namche Bazaar, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.-7-6-20368861-3-5
Max temp.7691214151616151297
Precip.15153530501602552751601101010

Nepalganj
Nepalganj, location on the map
Nepalganj, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.8101419232526262520149
Max temp.202631373837343433322823
Precip.252515206021048539518545510
Prec. days2222510191811201
Day length111112131414141312121110
Sun hours7881097566887

Pokhara (800 meters)
Pokhara, location on the map
Pokhara, location on the map
JanFebMarAprMayJunJulAugSepOctNovDec
Min temp.7101316192122222117128
Max temp.202327303031303030282421
Precip.2035651403556509408406351601510
Prec. days246101822262419811
Day length111112131414141312121110
Sun hours7781076445776



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