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Monthly climate in Chengyuan, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Chengyuan features a humid subtropical climate (Cfa). Temperatures typically range between 9 °C (48 °F) and 26 °C (79 °F) through the year, but rarely can drop to -5 °C (24 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 1951 mm (76.8 inches) and receives 188 rainy days on the 1 mm (0.04 inches) threshold annually. Chengyuan enjoys an average of 2910 hours of sunshine throughout the year, and daylight varies from 10 hours 26 minutes to 13 hours 49 minutes per day.

Monthly average temperatures in Chengyuan, China

The warmest months in Chengyuan are July, August and September, with daily mean temperatures ranging from 24 to 26 °C (75 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 9 to 9 °C (48 - 49 °F) throughout the day. On average each year, Chengyuan experiences 130 days above 25 °C (77.0 °F) and 8 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Chengyuan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum23°C
(73°F)		25°C
(78°F)		27°C
(82°F)		31°C
(87°F)		34°C
(94°F)		35°C
(95°F)		36°C
(97°F)		34°C
(94°F)		35°C
(96°F)		34°C
(93°F)		28°C
(83°F)		26°C
(79°F)
Mean maximum21°C
(70°F)		22°C
(72°F)		26°C
(79°F)		29°C
(85°F)		32°C
(90°F)		32°C
(91°F)		35°C
(95°F)		34°C
(93°F)		34°C
(93°F)		31°C
(88°F)		26°C
(79°F)		22°C
(72°F)
Average high13°C
(56°F)		14°C
(57°F)		18°C
(65°F)		22°C
(72°F)		25°C
(78°F)		27°C
(82°F)		31°C
(88°F)		31°C
(87°F)		29°C
(85°F)		24°C
(75°F)		19°C
(67°F)		14°C
(57°F)
Daily mean9°C
(48°F)		9°C
(49°F)		13°C
(56°F)		17°C
(62°F)		21°C
(70°F)		23°C
(75°F)		26°C
(79°F)		26°C
(79°F)		24°C
(75°F)		19°C
(66°F)		14°C
(58°F)		9°C
(49°F)
Average low5°C
(41°F)		6°C
(42°F)		9°C
(49°F)		12°C
(54°F)		17°C
(63°F)		20°C
(69°F)		22°C
(73°F)		22°C
(73°F)		20°C
(68°F)		15°C
(59°F)		11°C
(51°F)		6°C
(42°F)
Mean minimum-2°C
(29°F)		-1°C
(31°F)		3°C
(37°F)		5°C
(42°F)		11°C
(52°F)		17°C
(62°F)		20°C
(69°F)		21°C
(69°F)		16°C
(60°F)		8°C
(47°F)		5°C
(41°F)		-1°C
(31°F)
Minimum-5°C
(24°F)		-4°C
(24°F)		0°C
(33°F)		2°C
(36°F)		7°C
(44°F)		13°C
(55°F)		19°C
(67°F)		20°C
(68°F)		13°C
(56°F)		7°C
(45°F)		3°C
(38°F)		-2°C
(29°F)

Compare climate in Chengyuan with other places

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

Monthly average precipitation in Chengyuan, China

Chengyuan usually has the most precipitation in May, June and August, with an average of 21 rainy days and 308 mm (12.1 inches) of precipitation per month. The driest months in Chengyuan are January, October and December. On average, 56 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Chengyuan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)52 (2.0)97 (3.8)186 (7.3)157 (6.2)257 (10.1)419 (16.5)220 (8.7)247 (9.7)111 (4.4)63 (2.5)88 (3.5)54 (2.1)
Average precipitation days (≥ 1 mm)91219162022202116101211

Monthly sunshine hours in Chengyuan, China

The sunniest months in Chengyuan are May, July and August, when the sun shines an average of 9 hours 25 minutes a day. Least sunny months in Chengyuan: January, February and December receive an average of 6 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Chengyuan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours180209225242274226298302271244219213
Mean daily daylight hours10h 36m11h 13m11h 59m12h 48m13h 29m13h 49m13h 39m13h 3m12h 17m11h 29m10h 47m10h 26m

Solar UV radiation in Chengyuan, China

Chengyuan experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 13 - 13, which corresponds to the Extreme category of sun exposure. January, November and December are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Chengyuan UV Index data.

Average daily maximum UV levels by month for Chengyuan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)69111213131313121086