Lhasa Climate

Lhasa (拉萨) lies in a broad river valley on the central Tibetan Plateau. Although the urban centre stands at approximately 3,650 metres, the municipality stretches from the lower valleys of Quxu County (曲水县) to the high mountains, grasslands and lake basin of Damxung County (当雄县). This elevation range creates major differences in temperature, wind, precipitation and road conditions across Lhasa.

Central Lhasa has a highland temperate, semi-arid monsoon climate characterized by intense sunshine, dry winters, cool summers, large day-to-night temperature differences and a concentrated summer rainy season. The city receives more than 3,000 hours of sunshine annually, while most precipitation falls from June to September, frequently during the evening or night.

How Geography and Landforms Shape Lhasa’s Climate

The Lhasa River Valley Creates a Relatively Mild Urban Climate

Central Lhasa occupies the middle and lower Lhasa River Valley (拉萨河谷), surrounded by high mountains. The lower valley floor receives stronger daytime heating than the surrounding ridges and is partly protected from the coldest northern winds.

This explains why Chengguan District (城关区), Doilungdêqên District (堆龙德庆区) and Dagzê District (达孜区) are considerably milder than Damxung, Namtso and the high eastern mountains. Clear skies allow strong solar heating during the day, but thin, dry air releases heat quickly after sunset, producing sharp nighttime cooling.

High Elevation Intensifies Sunshine and Temperature Variation

Lhasa’s thin atmosphere contains less water vapour and filters less ultraviolet radiation than lowland air. Direct sunlight can therefore feel warm even when the measured temperature is modest. Once the sun disappears, the temperature may fall by more than 15°C within several hours.

The municipality records annual average temperatures ranging approximately from 1.3°C in colder northern areas to 7.5°C in the main river valleys. The wider city has an average annual precipitation of about 431 millimetres, but evaporation is considerably greater than rainfall.

The Himalayas and Tibetan Plateau Limit Moisture

Lhasa lies north of the main Himalayan range. Much of the moisture transported northward by the South Asian monsoon is reduced before reaching the central plateau, leaving Lhasa drier than southeastern Tibet.

During summer, some monsoon moisture still reaches the Lhasa River basin. Daytime heating encourages rising air over the mountains and valleys, while cooling later in the day helps produce cloud, showers and thunderstorms. This contributes to Lhasa’s characteristic pattern of relatively bright days followed by evening or nighttime rain.

Northern Mountains Create a Colder Climate around Damxung and Namtso

Northern Lhasa includes the Nyainqêntanglha Mountains (念青唐古拉山), the Damxung–Yangbajain basin and the Namtso lake basin. Much of this area lies above 4,200 metres, while Namtso’s shoreline is around 4,700 metres.

Damxung is Lhasa’s coldest county, with stronger winds, a shorter frost-free season and much longer periods of winter conditions. Official local information describes the high Namtso area as having an annual average temperature below freezing and frequent wind and snow.

Eastern and Northern High Mountains Receive More Rain and Snow

The higher areas of Maizhokunggar County (墨竹工卡县), northern Lhünzhub County (林周县) and Damxung intercept more summer moisture and experience more frequent rain, sleet and snow than the lower western valleys.

Recent municipal forecasts repeatedly identify Damxung, eastern Maizhokunggar and northern Lhünzhub as the areas most vulnerable to high winds, snowfall and rapidly changing mountain weather.

Climate Differences across Lhasa

The municipality’s physical geography ranges from river valleys below 3,600 metres to mountains above 7,000 metres. Official planning documents divide it into the northern glaciated mountains, the Damxung–Yangbajain basin, the Namtso high-cold lake basin and the southern river-valley landscapes.

Lhasa Monthly Temperature and Climate Table

The table below uses central Lhasa, particularly Chengguan District, as the reference. Temperatures around Namtso, Damxung, high passes and mountain monasteries can be 5–15°C lower, especially at night or during windy weather. The figures are rounded long-term planning averages rather than daily forecasts.

June is generally the warmest month in central Lhasa, with an average maximum close to 23°C, while January is the coldest and commonly records nighttime temperatures below -8°C. The city’s recorded extremes have approached 30°C in summer and fallen below -16°C during severe winter cold.

Spring Weather: March to May

Spring is dry, sunny and frequently windy. Temperatures rise rapidly during the day, but mornings and evenings remain cold. Dust, dry skin and strong ultraviolet exposure are common, while mountain areas can still receive snow.

March is usually the windiest and most changeable month. April becomes milder, and May is one of the most comfortable months for city sightseeing and lower-valley excursions. Snow or sleet may nevertheless affect Namtso, high passes and eastern Maizhokunggar.

Best for: historical and cultural visits, photography, monasteries and lower-valley exploration.

Main limitation: strong afternoon wind and large day-to-night temperature changes.

Summer Weather: June to August

Summer is Lhasa’s warmest and wettest season, but daytime temperatures remain comfortable compared with most lowland Chinese cities. Rain is often concentrated in the late afternoon, evening or night, so clear morning weather can change quickly.

July and August have the highest rainfall. Thunderstorms may bring short periods of heavy rain, hail, lightning and strong gusts. Recent municipal forecasts have warned that localized summer storms can affect roads, rivers, urban drainage and outdoor activities.

The grasslands around Damxung and Namtso are greenest during summer, but the lake remains cold and exposed. Even in July, visitors need a warm windproof jacket.

Best for: summer holidays, grasslands, lakes and longer regional journeys.

Main limitation: rain, cloud, thunderstorms and temporary road disruption.

Autumn Weather: September to October

Autumn is one of Lhasa’s best travel periods. Rainfall decreases, the air becomes clearer and daytime temperatures remain comfortable. September retains some summer moisture, while October is drier, brighter and colder.

Mountain visibility is often excellent, and city walking conditions are comfortable. However, nighttime temperatures decline rapidly, and Damxung, Namtso and Maizhokunggar can experience early snow or icy roads from October onward.

Best for: photography, cultural travel, mountain views and self-drive journeys.

Main limitation: increasingly cold mornings and possible snow in high areas.

Winter Weather: November to February

Winter is dry, sunny and cold. Central Lhasa frequently experiences pleasant daytime sunshine, but shaded streets, temple interiors and nighttime conditions can be much colder than expected.

Snowfall in the city is limited, but high mountains, Damxung and the Namtso region may receive substantial snow and strong wind. Some roads and high-altitude attractions may close temporarily.

Winter air is exceptionally dry, and strong sunshine continues despite the cold. Moisturizer, lip balm and sunscreen are as important as winter clothing.

Best for: quiet city stays, monasteries, museums, teahouses and cultural observation.

Main limitation: freezing nights, dry air, lower oxygen pressure and restricted access to high mountain areas.

Best Time to Visit Lhasa

For most first-time travelers, May, June, September and early October offer the strongest balance of comfortable weather, clear views and road reliability.

Seasonal Clothing Guide

Year-round essentials include UV-protective sunglasses, high-SPF sunscreen, lip balm, moisturizer, a sun hat and a reusable water bottle. Visitors heading to Namtso or other high areas need warmer clothing than those remaining in central Lhasa.

Weather-Based Route Planning

Central Lhasa Cultural Program

A gradual first visit can begin with two or three days in central Lhasa:

Potala Palace – Jokhang Temple – Barkhor Street – Norbulingka – Tibet Museum – Sera Monastery – Drepung Monastery

This arrangement keeps the first days at a relatively consistent sleeping elevation and allows time for altitude adaptation before travelling higher.

Eastern Lhasa Cultural and Valley Route

Central Lhasa – Dagzê – Ganden Monastery – Maizhokunggar

This route is best from May to October. Mountain roads near Ganden and eastern Maizhokunggar may be affected by snow or ice in winter and early spring.

Northern Grassland and Namtso Route

Central Lhasa – Yangbajain – Damxung – Namtso

June to September provides the most reliable access. Namtso is more than 1,000 metres higher than central Lhasa, so it should not be scheduled immediately after arrival. Weather, road conditions and scenic-area opening status should be checked before departure.

Western Valley Route

Central Lhasa – Nyêmo – Quxu – Yarlung Tsangpo Valley

This comparatively dry corridor is suitable during spring and autumn and can be combined with traditional handicraft, agricultural or river-valley cultural experiences.

Weather and Altitude Safety

Lhasa’s pleasant sunshine can conceal cold air, strong ultraviolet radiation and high-altitude stress. Outdoor activity should remain light during the first one or two days, particularly after flying directly to the city.

Travelers should not ascend to Namtso or another higher sleeping location while experiencing worsening headache, vomiting, unusual fatigue, confusion or breathlessness at rest. Strong rain, lightning, snowfall or poor visibility are valid reasons to postpone a high-mountain excursion rather than continue according to a fixed schedule.