Lanzhou Weather & Climate: Best Time to Visit

Temperatures in Lanzhou, Gansu, China, vary greatly throughout the year. July is the hottest month at 29°C (84°F), while January is the coldest at 2°C (36°F).

The city tends toward dry conditions, with around 478 mm (19 in) of rain/snowfall per year. It does, however, have a distinct dry season from November to April. The most sunshine falls in May, with an average of 8.2 hours of daily sunshine.

Monthly Temperature in Lanzhou

The climate in Lanzhou is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 29°C (84°F) in July to a chilly 2°C (36°F) in the coolest month, January.

Nights vary from 16°C (61°F) in July to around -10°C (14°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Lanzhou

Lanzhou maintains relatively dry conditions year-round, recording average annual precipitation of 478 mm (19 in). The climate in Lanzhou shows significant variation throughout the year. Expect moderate rainfall in August, the wettest month, with an average of 99 mm (3.9 in) of precipitation over 13 rainy days.

In contrast, the driest month December offers drier and sunnier days, with around 4.1 mm (0.2 in) of snowfall over 2 snowy days. For more details, please visit our Lanzhou Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Sunshine Hours in Lanzhou

For those who appreciate different seasons, Lanzhou serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 8.2 hours of sunshine daily, and embrace the darker days in December, offering only 5.0 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

Humidity in Lanzhou by Month

The relative humidity is moderate throughout the year in Lanzhou.

The city experiences its highest humidity in September, reaching 69%. In April, the humidity drops to its lowest level at 44%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

Lanzhou 3-Day Forecast

10-Day Forecast

Select a Month

Check the conditions for any month of the year.

Best Time to Visit Lanzhou

Lanzhou's weather is most enjoyable during April, May, June, July, August and September, with comfortable temperatures from 19°C (66°F) to 29°C (83°F). The moderate conditions ensure pleasant weather for exploring the area. Expect varied weather during this period with rainfall between 27 mm (1.1 in) and 99 mm (3.9 in), providing a good balance of sunny and rainy days.

Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.