Urumqi has a mid-temperate, continental arid climate. The hottest months are July and August and average temperatures of around 25.7 °C (78.2°F). The coldest month is January with an average temperature of -15.2 °C (4.6 °F). Urumqi sees large differences between day and night temperatures. Winter is long and cold in Urumqi, and the snow is often heavy. Please bring a sweater or jacket even you visit during the hottest month.
Spring comes at least one month later in Urumqi than in most other cities in China, and begins in mid-April. Spring is short and cool, and usually ends in June. The average temperature is around 15 °C (59 °F). About 40% of the yearly rainfall is contributed in the spring. Jacket and jeans are recommended, and bring a sweater with you.
Summer is the most beautiful season in Urumqi. The duration of summer differs in the city and suburb areas. Summer is only 62 days long in Urumqi city but goes for 90 days in the suburbs. The average temperature in the summer is 23 °C (73.4 °F). Since Urumqi is far from the seashore, the air is dry and even during the hot summer, you don’t feel stuffy inside or outside the house. There is a large difference in temperature between days and nights in Urumqi during the summer, and nights can be very cool. Urumqi is a good place to avoid the heat during the summer.
We recommend that you bring a T-shirt and jeans to Urumqi during the summer, and jacket for the cool nights.
Autumn in Urumqi starts from late August. The weather stabilizes in the autumn, and it rarely rains. The average temperature is around 13 °C (55.4 °F). After late September, cold air reaches Urumqi from Siberia and the temperature decreases rapidly. During late October, the day-and-night temperature difference is even larger than in the summer. You may wear a T-shirt at noon and bring a coat for the evenings.
Winter is from November until April, and lasts over 150 days. The average temperature in Urumqi during the winter is -13 °C (8.6 °F). Heave snow is common during the winter, which makes Urumqi an ideal place to ski. A padded coat, a down-filled coat, and a sweater are recommended for the winter.