In Bhutan, the climate is influenced by altitude, and it is subtropical in the lowlands, and progressively colder as you climb the slopes of the Himalayas. In addition, the climate is influenced by the summer monsoon, which brings rains and widespread cloudiness for almost half a year, but especially from June to late September.

In the thin flat southern region, in cities like Gelephu and Phuentsholing, the climate is subtropical. Winter is very mild, but sometimes it can get cold at night. Spring, from March to May, is hot, especially in April and May, when the temperature can reach as high as 40 °C (104 °F); in addition, afternoon thunderstorms become more frequent. From June to mid-October, it's the monsoon season, with abundant rainfall, sometimes torrential, enhanced by the proximity to the mountains, and muggy heat. The total annual rainfall can exceed 3,000 millimeters (118 inches). The best time in this area is from November to February.
Here are the average temperatures of Gelephu.

In hilly and mountainous areas up to 1,500 meters (5,000 feet), the climate becomes progressively milder, with relatively cold, dry winters and warm, rainy summers, during which the monsoon rains occur on the southern side, while in some inland valleys the summer rains are less intense. For example, in Punakha, located at 1,300 meters (4,250 feet), the average ranges from 11 °C (52 °F) in January to 24 °C (75 °F) in July, so the summer is quite hot and humid despite the altitude.

Above 2,000 meters (6,500 feet), winter are quite cold, with nights usually below freezing (0 °C or 32 °F). In the capital, Thimphu, located in a valley, at an altitude varying between 2,200 and 2,600 meters (7,200 and 8,500 ft), the average temperature ranges from 5 °C (41 °F) in January to 20 °C (68 °F) in the period from June to August. Winter is dry and sunny, but sometimes snow can fall. In summer, the monsoon rains are plentiful, so much so that 1,400 mm (55 in) of rain fall in a year, of which more than 250 mm (10 in) fall per month from June to August, and up to 370 mm (14.5 in) in July. In the nearby city of Paro, a similar climate is found.

In some inland valleys, like that of Jakar, at 2,500 meters (8,200 ft), the monsoon penetrates with more difficulty, so much so that the annual precipitation is lower, and doesn't go above 750 mm (29.5 in) per year, though it still follows the same pattern, with a winter minimum and a summer maximum.
Above 2,800 meters (9,200 ft), the daily average temperature in January drops around freezing, and even summer nights begin to be cold.
Glaciers and snowfields begin at high altitudes, above 5,000 meters (16,400 ft). In the northernmost areas, the summer rains are not very heavy, but the sky in summer is often cloudy, and you can find fogs, or rather clouds lying over the mountain slopes.
The highest peak of Bhutan is Gangkhar Puensum, 7,570 meters (28,836 feet) high.



The sun in Bhutan shines regularly in winter, while in the monsoon period it does not shine very often. Here are the average daily sunshine hours in Thimphu.

Tropical cyclones

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Bhutan is too far from the sea to be directly hit by tropical cyclones, but the remains of cyclones affecting Bangladesh, can cause heavy rains in the plains as well as snow in the mountains, as happened in May 2009 with Cyclone Aila.
Cyclones typically occur from mid-April to early December, and most likely in May-June and October-November.

Best Time

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The best times to visit the mountainous part of Bhutan are spring and autumn, and particularly March and April, and from mid-October to mid-November. During the summer, the rains can make the roads muddy, so travelling can be difficult, and besides the clouds can hide the mountain peaks. In winter, the weather is generally good, but it's cold in the mountains, besides snow can fall at high altitudes, and it can also block some passes.

What to pack

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In winter: for the plain, bring spring/autumn clothes, light for the day, a jacket and a sweater for the evening. For Punakha and around 1,500 meters (5,000 feet), spring/autumn clothes for the day, warm for the evening, a jacket, a hat, a scarf, sunglasses, sunscreen. For Thimphu and above 2,000 meters (6,500 feet), warm clothes for the evening, but during the day a fleece and a light jacket may be sufficient; hiking shoes. At higher altitudes, cold weather clothing, synthetic thermal long underwear, a fleece, a parka, a wind jacket, warm boots.

In summer: for the plain, bring lightweight clothing of natural fibres, a light raincoat or umbrella. For Punakha and around 1,500 meters (5,000 feet), light clothing, a sweatshirt for the evening, a raincoat or umbrella. For Thimphu and above 2,000 meters (6,500 feet), spring/autumn clothes, light for the day, a sweater and a jacket for the evening. At higher altitudes, a warm jacket, a down jacket, a hat, gloves, a scarf. For overnight stays outdoors, a sleeping bag, a warm jacket.