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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 6 °C (44 °F) and 30 °C (86 °F) through the year, but rarely can drop to -6 °C (21 °F) or can rise to as high as 41 °C (106 °F). The average annual precipitation amounts to about 1680 mm (66.2 inches) and receives 146 rainy days on the 1 mm (0.04 inches) threshold annually. Chengnan enjoys an average of 2715 hours of sunshine throughout the year, and daylight varies from 10 hours 13 minutes to 14 hours 2 minutes per day.

Monthly average temperatures in Chengnan, China

The warmest months in Chengnan are July, August and September, with daily mean temperatures ranging from 26 to 30 °C (78 - 86 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 8 °C (44 - 47 °F) throughout the day. On average each year, Chengnan experiences 139 days above 25 °C (77.0 °F) and 13 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
Maximum25°C
(76°F)		27°C
(81°F)		30°C
(86°F)		34°C
(94°F)		39°C
(102°F)		37°C
(99°F)		41°C
(106°F)		40°C
(105°F)		37°C
(99°F)		35°C
(95°F)		31°C
(88°F)		24°C
(75°F)
Mean maximum20°C
(69°F)		23°C
(73°F)		27°C
(82°F)		31°C
(89°F)		35°C
(96°F)		34°C
(94°F)		39°C
(102°F)		38°C
(101°F)		36°C
(96°F)		32°C
(90°F)		27°C
(80°F)		20°C
(67°F)
Average high10°C
(50°F)		12°C
(53°F)		17°C
(64°F)		23°C
(73°F)		27°C
(82°F)		29°C
(85°F)		33°C
(92°F)		35°C
(95°F)		30°C
(86°F)		24°C
(75°F)		19°C
(66°F)		12°C
(54°F)
Daily mean6°C
(44°F)		8°C
(46°F)		13°C
(56°F)		18°C
(64°F)		23°C
(73°F)		25°C
(78°F)		29°C
(85°F)		30°C
(86°F)		26°C
(78°F)		20°C
(68°F)		14°C
(58°F)		8°C
(47°F)
Average low3°C
(38°F)		4°C
(40°F)		9°C
(49°F)		13°C
(56°F)		18°C
(65°F)		22°C
(72°F)		26°C
(79°F)		26°C
(80°F)		22°C
(72°F)		16°C
(62°F)		11°C
(51°F)		5°C
(40°F)
Mean minimum-4°C
(26°F)		-1°C
(30°F)		2°C
(36°F)		5°C
(41°F)		13°C
(55°F)		18°C
(64°F)		23°C
(74°F)		23°C
(74°F)		18°C
(64°F)		10°C
(50°F)		4°C
(40°F)		-2°C
(29°F)
Minimum-6°C
(21°F)		-3°C
(27°F)		-0°C
(32°F)		3°C
(38°F)		10°C
(51°F)		15°C
(60°F)		21°C
(70°F)		19°C
(67°F)		16°C
(61°F)		8°C
(47°F)		-0°C
(32°F)		-4°C
(26°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 May, June and July, with an average of 15 rainy days and 270 mm (10.6 inches) of precipitation per month. The driest months in Chengnan are February, October and November. On average, 70 mm (2.8 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)79 (3.1)72 (2.8)127 (5.0)91 (3.6)182 (7.2)377 (14.8)253 (10.0)159 (6.3)129 (5.1)71 (2.8)66 (2.6)74 (2.9)
Average precipitation days (≥ 1 mm)9916111218171415799

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 9 minutes a day. Least sunny months in Chengnan: January, February and March receive an average of 5 hours 48 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 hours136190201245267231276309232217204202
Mean daily daylight hours10h 25m11h 6m11h 59m12h 53m13h 39m14h 2m13h 50m13h 11m12h 19m11h 24m10h 37m10h 13m

Solar UV radiation in Chengnan, China

Chengnan experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure. January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. 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)579101112111210864