Lanzhou Weather & Climate: Best Time to Visit

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

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

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

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