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Monthly climate in Xinmen, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Xinmen features a humid subtropical climate (Cfa). Temperatures typically range between 6 °C (42 °F) and 28 °C (83 °F) through the year, but rarely can drop to -6 °C (21 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 1666 mm (65.6 inches) and receives 145 rainy days on the 1 mm (0.04 inches) threshold annually. Xinmen enjoys an average of 2739 hours of sunshine throughout the year, and daylight varies from 10 hours 15 minutes to 14 hours 0 minutes per day.

Monthly average temperatures in Xinmen, China

The warmest months in Xinmen are July, August and September, with daily mean temperatures ranging from 25 to 28 °C (77 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 7 °C (42 - 46 °F) throughout the day. On average each year, Xinmen experiences 126 days above 25 °C (77.0 °F) and 10 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Xinmen. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum21°C
(70°F)		24°C
(76°F)		28°C
(82°F)		31°C
(89°F)		35°C
(95°F)		35°C
(95°F)		38°C
(100°F)		37°C
(99°F)		36°C
(96°F)		34°C
(93°F)		27°C
(80°F)		20°C
(68°F)
Mean maximum18°C
(65°F)		20°C
(69°F)		26°C
(78°F)		29°C
(85°F)		33°C
(91°F)		33°C
(91°F)		36°C
(97°F)		36°C
(97°F)		34°C
(94°F)		32°C
(89°F)		24°C
(76°F)		18°C
(64°F)
Average high9°C
(48°F)		10°C
(51°F)		16°C
(61°F)		21°C
(71°F)		26°C
(79°F)		28°C
(82°F)		32°C
(89°F)		33°C
(91°F)		29°C
(84°F)		23°C
(74°F)		18°C
(64°F)		11°C
(52°F)
Daily mean6°C
(42°F)		7°C
(45°F)		12°C
(54°F)		17°C
(63°F)		22°C
(71°F)		24°C
(76°F)		28°C
(82°F)		28°C
(83°F)		25°C
(77°F)		19°C
(66°F)		13°C
(56°F)		7°C
(46°F)
Average low3°C
(37°F)		4°C
(39°F)		9°C
(48°F)		13°C
(55°F)		18°C
(65°F)		21°C
(71°F)		25°C
(77°F)		25°C
(77°F)		21°C
(71°F)		15°C
(60°F)		10°C
(50°F)		4°C
(40°F)
Mean minimum-4°C
(25°F)		-0°C
(32°F)		4°C
(39°F)		6°C
(43°F)		13°C
(57°F)		18°C
(64°F)		22°C
(72°F)		22°C
(71°F)		17°C
(62°F)		10°C
(50°F)		4°C
(39°F)		-2°C
(29°F)
Minimum-6°C
(21°F)		-3°C
(27°F)		2°C
(36°F)		4°C
(39°F)		11°C
(53°F)		16°C
(61°F)		21°C
(69°F)		18°C
(64°F)		16°C
(61°F)		8°C
(46°F)		2°C
(36°F)		-4°C
(25°F)

Compare climate in Xinmen with other places

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

Monthly average precipitation in Xinmen, China

Xinmen usually has the most precipitation in May, June and July, with an average of 16 rainy days and 274 mm (10.8 inches) of precipitation per month. The driest months in Xinmen are October, November and December. On average, 53 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Xinmen. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)76 (3.0)78 (3.1)157 (6.2)129 (5.1)196 (7.7)346 (13.6)281 (11.1)153 (6.0)90 (3.6)38 (1.5)56 (2.2)66 (2.6)
Average precipitation days (≥ 1 mm)91116131418171410698

Monthly sunshine hours in Xinmen, China

The sunniest months in Xinmen are May, July and August, when the sun shines an average of 9 hours 11 minutes a day. Least sunny months in Xinmen: January, February and November receive an average of 5 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Xinmen. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours146187203237264225283306247226203206
Mean daily daylight hours10h 27m11h 7m11h 59m12h 53m13h 38m14h 0m13h 49m13h 10m12h 18m11h 25m10h 39m10h 15m

Solar UV radiation in Xinmen, China

Xinmen experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 12 - 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 Xinmen UV Index data.

Average daily maximum UV levels by month for Xinmen. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)679101212121211865