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Monthly climate in Zhoushan, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Zhoushan features a humid subtropical climate (Cwa). Temperatures typically range between 3 °C (38 °F) and 28 °C (83 °F) through the year, but rarely can drop to -10 °C (15 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 1028 mm (40.5 inches) and receives 97 rainy days on the 1 mm (0.04 inches) threshold annually. Zhoushan enjoys an average of 3027 hours of sunshine throughout the year, and daylight varies from 9 hours 59 minutes to 14 hours 17 minutes per day.

Monthly average temperatures in Zhoushan, China

The warmest months in Zhoushan are June, July and August, with daily mean temperatures ranging from 25 to 28 °C (78 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 5 °C (38 - 42 °F) throughout the day. On average each year, Zhoushan experiences 125 days above 25 °C (77.0 °F) and 33 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Zhoushan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum16°C
(61°F)		25°C
(77°F)		29°C
(84°F)		31°C
(87°F)		35°C
(95°F)		36°C
(97°F)		38°C
(100°F)		36°C
(98°F)		35°C
(96°F)		32°C
(90°F)		27°C
(82°F)		18°C
(65°F)
Mean maximum13°C
(55°F)		19°C
(66°F)		25°C
(77°F)		29°C
(84°F)		33°C
(91°F)		34°C
(94°F)		35°C
(96°F)		35°C
(95°F)		32°C
(90°F)		29°C
(84°F)		24°C
(76°F)		16°C
(61°F)
Average high7°C
(45°F)		10°C
(49°F)		15°C
(60°F)		20°C
(69°F)		26°C
(79°F)		29°C
(85°F)		31°C
(88°F)		31°C
(89°F)		28°C
(82°F)		22°C
(72°F)		17°C
(63°F)		10°C
(50°F)
Daily mean3°C
(38°F)		5°C
(42°F)		11°C
(52°F)		16°C
(61°F)		21°C
(71°F)		25°C
(78°F)		28°C
(82°F)		28°C
(83°F)		24°C
(76°F)		18°C
(64°F)		12°C
(54°F)		5°C
(42°F)
Average low-0°C
(32°F)		2°C
(35°F)		7°C
(44°F)		11°C
(53°F)		17°C
(63°F)		21°C
(71°F)		25°C
(78°F)		26°C
(78°F)		21°C
(70°F)		14°C
(57°F)		8°C
(47°F)		2°C
(35°F)
Mean minimum-6°C
(21°F)		-4°C
(26°F)		1°C
(33°F)		5°C
(42°F)		12°C
(53°F)		18°C
(65°F)		22°C
(72°F)		21°C
(71°F)		17°C
(62°F)		8°C
(46°F)		1°C
(35°F)		-5°C
(23°F)
Minimum-10°C
(15°F)		-5°C
(23°F)		-1°C
(30°F)		4°C
(40°F)		10°C
(50°F)		16°C
(62°F)		19°C
(67°F)		20°C
(68°F)		14°C
(58°F)		6°C
(43°F)		0°C
(33°F)		-8°C
(18°F)

Compare climate in Zhoushan with other places

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

Monthly average precipitation in Zhoushan, China

Zhoushan usually has the most precipitation in June, July and August, with an average of 12 rainy days and 171 mm (6.7 inches) of precipitation per month. The driest months in Zhoushan are February, November and December. On average, 35 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Zhoushan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)43 (1.7)35 (1.4)51 (2.0)49 (1.9)119 (4.7)125 (4.9)253 (10.0)135 (5.3)91 (3.6)58 (2.3)36 (1.4)33 (1.3)
Average precipitation days (≥ 1 mm)66777717149656

Monthly sunshine hours in Zhoushan, China

The sunniest months in Zhoushan are June, July and August, when the sun shines an average of 9 hours 30 minutes a day. Least sunny months in Zhoushan: January, February and December receive an average of 6 hours 49 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Zhoushan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours172222256257281284282306268242227225
Mean daily daylight hours10h 13m10h 59m11h 58m13h 0m13h 51m14h 17m14h 4m13h 19m12h 20m11h 19m10h 26m9h 59m

Solar UV radiation in Zhoushan, China

Zhoushan 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, 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 Zhoushan UV Index data.

Average daily maximum UV levels by month for Zhoushan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)4579101111119753