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Monthly climate in Lanzhou, China

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Lanzhou features a cold semi-arid climate (BSk).Temperatures typically range between -5 °C (23 °F) and 22 °C (72 °F) through the year, but rarely can drop to -21 °C (-5 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 517 mm (20.4 inches) and receives 81 rainy days on the 1 mm (0.04 inches) threshold annually.Lanzhou enjoys an average of 3490 hours of sunshine throughout the year, and daylight varies from 9 hours 44 minutes to 14 hours 33 minutes per day.

Monthly average temperatures in Lanzhou, China §

The warmest months in Lanzhou are June, July and August, with daily mean temperatures ranging from 20 to 22 °C (67 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to -2 °C (23 - 29 °F) throughout the day. On average each year, Lanzhou experiences 65 days above 25 °C (77.0 °F) and 124 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Lanzhou, China.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 13°C
(55°F)		 17°C
(63°F)		 26°C
(79°F)		 31°C
(87°F)		 32°C
(90°F)		 32°C
(91°F)		 36°C
(97°F)		 35°C
(95°F)		 31°C
(87°F)		 27°C
(80°F)		 20°C
(69°F)		 12°C
(54°F)
Mean maximum 9°C
(48°F)		 14°C
(58°F)		 22°C
(71°F)		 26°C
(79°F)		 30°C
(87°F)		 30°C
(87°F)		 34°C
(94°F)		 32°C
(90°F)		 27°C
(82°F)		 23°C
(73°F)		 18°C
(64°F)		 9°C
(49°F)
Average high 1°C
(35°F)		 5°C
(42°F)		 13°C
(55°F)		 17°C
(64°F)		 22°C
(72°F)		 25°C
(78°F)		 28°C
(83°F)		 26°C
(78°F)		 21°C
(71°F)		 15°C
(58°F)		 8°C
(47°F)		 2°C
(36°F)
Daily mean -5°C
(23°F)		 -2°C
(29°F)		 6°C
(43°F)		 11°C
(52°F)		 16°C
(60°F)		 20°C
(67°F)		 22°C
(72°F)		 20°C
(68°F)		 16°C
(61°F)		 9°C
(48°F)		 2°C
(36°F)		 -4°C
(25°F)
Average low -10°C
(14°F)		 -7°C
(19°F)		 -1°C
(31°F)		 5°C
(41°F)		 10°C
(50°F)		 14°C
(58°F)		 16°C
(62°F)		 15°C
(60°F)		 11°C
(53°F)		 4°C
(40°F)		 -3°C
(27°F)		 -8°C
(17°F)
Mean minimum -15°C
(5°F)		 -14°C
(7°F)		 -7°C
(19°F)		 -1°C
(30°F)		 4°C
(39°F)		 9°C
(49°F)		 12°C
(55°F)		 11°C
(51°F)		 7°C
(45°F)		 -0°C
(32°F)		 -9°C
(15°F)		 -15°C
(6°F)
Minimum -19°C
(-2°F)		 -21°C
(-5°F)		 -11°C
(13°F)		 -6°C
(21°F)		 3°C
(37°F)		 8°C
(46°F)		 11°C
(53°F)		 10°C
(50°F)		 6°C
(42°F)		 -1°C
(30°F)		 -13°C
(10°F)		 -18°C
(1°F)

Compare climate in Lanzhou with other places

Compare temperature, precipitation, sunshine, UV index in Lanzhou, China with other places around the world.

Monthly average precipitation in Lanzhou, China §

Lanzhou usually has the most precipitation in July, August and September, with an average of 12 rainy days and 92 mm (3.6 inches) of precipitation per month.The driest months in Lanzhou are January, February and December. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Lanzhou, China.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 6 (0.2) 7 (0.3) 14 (0.5) 40 (1.6) 51 (2.0) 58 (2.3) 81 (3.2) 125 (4.9) 70 (2.8) 48 (1.9) 12 (0.5) 5 (0.2)
Average precipitation days (≥ 1 mm) 2 2 3 9 7 9 11 13 12 9 3 1

Monthly sunshine hours in Lanzhou, China §

The sunniest months in Lanzhou are May, July and August, when the sun shines an average of 10 hours 40 minutes a day.Least sunny months in Lanzhou: January, October and November receive an average of 8 hours 17 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Lanzhou, China.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 224 272 306 286 329 310 347 316 285 267 270 273
Mean daily daylight hours 9h 59m 10h 51m 11h 58m 13h 6m 14h 4m 14h 33m 14h 18m 13h 28m 12h 22m 11h 14m 10h 14m 9h 44m

Solar UV radiation in Lanzhou, China §

Lanzhou experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure.January, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Lanzhou UV Index data.

Average daily maximum UV levels by month for Lanzhou, China.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 8 10 12 12 12 11 10 8 5 3