Tibet has none all year round.

There is no summer in Tibet all year round.

Influenced by the topography and weather system of the Qinghai-Tibet Plateau, Tibet has formed a unique climate. Generally speaking, the climate in Tibet is cold in the northwest and warm and humid in the southeast. There are also regional climate and vertical climate zones. Tibet has a lot of sunshine, strong radiation, large temperature difference between day and night, and clear wet and dry. It is dry and windy in winter and spring. Because of the abundant sunshine and strong radiation, even in the cold winter, the daytime in Tibet is still warm and harmonious, and only at night will the temperature drop below zero.

There is a great temperature difference between day and night in Tibet. Because of the long sunshine, winter is not as cold as people think, but strong ultraviolet radiation is also a major feature of Tibet.

Tibet has a dry climate. Winter and spring are usually called "dry season" and "windy season". In this season, there is little precipitation in Tibet and the climate is quite dry. Snowfall in winter is mainly concentrated in 1 1 until February of the following year, but sometimes it snows in April and May in some places.

A changeable climate

Due to the peculiar and diverse topography, landforms, high-altitude airflow and the influence of weather system in Tibet Plateau, a complex and diverse unique climate has been formed. Generally speaking, the climate in Tibet is characterized by severe cold in the northwest, warm and humid in the southeast, and zonal alternation from southeast to northwest, namely: subtropical zone-warm zone-temperate zone-sub-frigid zone; Wet-semi-humid-semi-arid-drought; Reflected in plants, the order is forest-shrub-meadow-grassland-desert.

In addition to the general trend, there are various regional climates and obvious vertical climatic zones. As far as its climate is concerned, there are many sunshine, strong radiation, large temperature difference between day and night, distinct wet and dry, and rainy nights. It is dry in winter and spring, windy, with low air pressure and low oxygen content. Because of the abundant sunshine and strong radiation, even in the cold winter, the daytime in Tibet is still warm and harmonious, and only at night will the temperature drop below zero.

The most obvious feature of Tibet's climate is the large temperature difference between day and night. The highest temperature in a day can reach 28 degrees Celsius, and the lowest temperature can be reduced to 10 degrees Celsius (taking August as an example). Because of the long sunshine, winter is not as cold as people think, but strong ultraviolet radiation is also a big challenge to Tibet's tourism.

Compared with other regions in the same latitude, the temperature in Tibet is low and the annual temperature difference is small. However, due to the strong solar radiation, the surface temperature rose rapidly after sunrise. Even in winter, as long as there is sunshine, you will feel warm as spring, which is probably beyond your imagination.

Tibet has the most solar radiation in China, and the local government and people have made full use of solar energy resources for a long time. Believe it or not, after you go to Tibet, you will definitely see solar cookers everywhere in the village yard, and people will use them to boil water and cook. Obviously, its value has not been fully exerted. At the same time, the air in Tibet is thin. Every square meter of air contains only about150-170g of oxygen, which is 62% to 65.4% of that in plain areas. In winter, the oxygen content is above 70%. The oxygen content is above 80% in summer, which is the main reason why you will feel short of breath and chest tightness when you go to Tibet.

Some people are not used to the climate in Tibet, not because of altitude sickness in Tibet, but more because of the relatively dry climate in Tibet. The winter and spring seasons in Tibet are often called "dry season", also called "windy season", which generally lasts from the end of June 10 to May of the following year. This season, there is little precipitation in Tibet and the climate is quite dry. Snowfall in winter is mainly concentrated in June 1 1 to February of the following year, but sometimes it snows in some places, such as Ali area, some mountainous areas above 4000 meters above sea level, and sometimes it snows in April and May. However, the "plateau night rain" in summer can really cool you down. The highest temperature in Lhasa in summer does not exceed 28 degrees Celsius.