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Monthly climate in Chengnan, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Chengnan features a humid subtropical climate (Cfa). Temperatures typically range between 4 °C (40 °F) and 29 °C (84 °F) through the year, but rarely can drop to -13 °C (10 °F) or can rise to as high as 39 °C (102 °F). The average annual precipitation amounts to about 1275 mm (50.2 inches) and receives 119 rainy days on the 1 mm (0.04 inches) threshold annually. Chengnan enjoys an average of 2918 hours of sunshine throughout the year, and daylight varies from 10 hours 6 minutes to 14 hours 9 minutes per day.

Monthly average temperatures in Chengnan, China

The warmest months in Chengnan are June, July and August, with daily mean temperatures ranging from 26 to 29 °C (78 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 6 °C (40 - 43 °F) throughout the day. On average each year, Chengnan experiences 132 days above 25 °C (77.0 °F) and 24 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Chengnan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(65°F)		26°C
(78°F)		29°C
(84°F)		32°C
(90°F)		35°C
(95°F)		36°C
(97°F)		39°C
(102°F)		37°C
(99°F)		36°C
(97°F)		36°C
(97°F)		27°C
(82°F)		19°C
(66°F)
Mean maximum15°C
(58°F)		20°C
(69°F)		26°C
(79°F)		30°C
(86°F)		34°C
(93°F)		34°C
(93°F)		36°C
(98°F)		36°C
(97°F)		33°C
(92°F)		31°C
(88°F)		25°C
(77°F)		17°C
(63°F)
Average high8°C
(46°F)		10°C
(51°F)		17°C
(62°F)		22°C
(71°F)		27°C
(80°F)		29°C
(85°F)		32°C
(89°F)		32°C
(90°F)		28°C
(83°F)		22°C
(73°F)		18°C
(64°F)		10°C
(51°F)
Daily mean4°C
(40°F)		6°C
(43°F)		12°C
(54°F)		17°C
(63°F)		22°C
(72°F)		26°C
(78°F)		28°C
(83°F)		29°C
(84°F)		24°C
(76°F)		18°C
(65°F)		13°C
(55°F)		6°C
(43°F)
Average low1°C
(34°F)		2°C
(37°F)		8°C
(46°F)		12°C
(54°F)		18°C
(64°F)		22°C
(71°F)		25°C
(78°F)		26°C
(78°F)		21°C
(70°F)		14°C
(58°F)		9°C
(48°F)		2°C
(36°F)
Mean minimum-6°C
(21°F)		-4°C
(26°F)		2°C
(37°F)		6°C
(43°F)		13°C
(56°F)		18°C
(66°F)		22°C
(72°F)		22°C
(72°F)		17°C
(62°F)		7°C
(46°F)		2°C
(36°F)		-4°C
(25°F)
Minimum-9°C
(15°F)		-13°C
(10°F)		1°C
(33°F)		5°C
(41°F)		11°C
(52°F)		17°C
(62°F)		19°C
(67°F)		21°C
(70°F)		15°C
(59°F)		6°C
(43°F)		0°C
(33°F)		-7°C
(20°F)

Compare climate in Chengnan with other places

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

Monthly average precipitation in Chengnan, China

Chengnan usually has the most precipitation in June, July and August, with an average of 13 rainy days and 213 mm (8.4 inches) of precipitation per month. The driest months in Chengnan are February, November and December. On average, 45 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Chengnan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)56 (2.2)55 (2.2)74 (2.9)71 (2.8)154 (6.1)184 (7.2)242 (9.5)212 (8.4)88 (3.5)57 (2.2)42 (1.6)39 (1.5)
Average precipitation days (≥ 1 mm)891191011161411767

Monthly sunshine hours in Chengnan, China

The sunniest months in Chengnan are May, July and August, when the sun shines an average of 9 hours 20 minutes a day. Least sunny months in Chengnan: January, February and December receive an average of 6 hours 25 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Chengnan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours156210233243281275291295256231224216
Mean daily daylight hours10h 19m11h 2m11h 59m12h 57m13h 45m14h 9m13h 57m13h 15m12h 19m11h 22m10h 32m10h 6m

Solar UV radiation in Chengnan, China

Chengnan experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure. January, November 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 Chengnan UV Index data.

Average daily maximum UV levels by month for Chengnan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)568101011111110854