Since Tibet has high altitude in average of above 13000 feet above the sea level winter becomes cold with little snow except in few few areas. The sun shines brightly and cold air blows. The temperature comes up (25 to 30° C.) and gets warm but not hot in the summer still the sun can be very strong. In Central & Western Tibet there is small rains in June to August and specially the summer and autumn are dry.

Here's the average temperatures, rainfall and sunshine hour in the Lhasa area: