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Monthly climate in Nantong, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Nantong features a humid subtropical climate (Cfa). Temperatures typically range between 7 °C (45 °F) and 28 °C (83 °F) through the year, but rarely can drop to -4 °C (26 °F) or can rise to as high as 40 °C (105 °F). The average annual precipitation amounts to about 1371 mm (54.0 inches) and receives 188 rainy days on the 1 mm (0.04 inches) threshold annually. Nantong enjoys an average of 2357 hours of sunshine throughout the year, and daylight varies from 10 hours 19 minutes to 13 hours 56 minutes per day.

Monthly average temperatures in Nantong, China

The warmest months in Nantong are June, July and August, with daily mean temperatures ranging from 24 to 28 °C (75 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 9 °C (45 - 48 °F) throughout the day. On average each year, Nantong experiences 113 days above 25 °C (77.0 °F) and 2 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Nantong. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum17°C
(62°F)		25°C
(77°F)		30°C
(87°F)		33°C
(92°F)		35°C
(96°F)		35°C
(95°F)		40°C
(105°F)		40°C
(103°F)		36°C
(96°F)		35°C
(94°F)		27°C
(81°F)		18°C
(64°F)
Mean maximum15°C
(59°F)		21°C
(70°F)		28°C
(82°F)		31°C
(88°F)		34°C
(93°F)		33°C
(92°F)		37°C
(99°F)		38°C
(100°F)		34°C
(93°F)		28°C
(83°F)		23°C
(74°F)		15°C
(60°F)
Average high10°C
(50°F)		12°C
(54°F)		18°C
(65°F)		22°C
(72°F)		25°C
(77°F)		27°C
(81°F)		31°C
(89°F)		33°C
(91°F)		26°C
(80°F)		20°C
(68°F)		16°C
(60°F)		11°C
(51°F)
Daily mean7°C
(45°F)		9°C
(48°F)		14°C
(58°F)		18°C
(65°F)		21°C
(70°F)		24°C
(75°F)		27°C
(82°F)		28°C
(83°F)		23°C
(74°F)		17°C
(63°F)		13°C
(55°F)		8°C
(47°F)
Average low5°C
(41°F)		6°C
(43°F)		11°C
(52°F)		14°C
(58°F)		17°C
(63°F)		21°C
(70°F)		24°C
(75°F)		24°C
(76°F)		20°C
(69°F)		15°C
(59°F)		10°C
(50°F)		6°C
(43°F)
Mean minimum-0°C
(32°F)		2°C
(35°F)		6°C
(43°F)		10°C
(49°F)		13°C
(56°F)		17°C
(63°F)		21°C
(70°F)		20°C
(68°F)		16°C
(62°F)		10°C
(50°F)		5°C
(42°F)		1°C
(34°F)
Minimum-4°C
(26°F)		-1°C
(31°F)		5°C
(41°F)		6°C
(44°F)		11°C
(52°F)		15°C
(59°F)		19°C
(67°F)		18°C
(65°F)		15°C
(59°F)		8°C
(46°F)		4°C
(39°F)		-1°C
(31°F)

Compare climate in Nantong with other places

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

Monthly average precipitation in Nantong, China

Nantong usually has the most precipitation in May, June and September, with an average of 18 rainy days and 176 mm (6.9 inches) of precipitation per month. The driest months in Nantong are January, February and December. On average, 47 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Nantong. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)46 (1.8)47 (1.8)97 (3.8)112 (4.4)174 (6.8)181 (7.1)149 (5.9)146 (5.7)174 (6.9)130 (5.1)68 (2.7)47 (1.8)
Average precipitation days (≥ 1 mm)121317161918171418191213

Monthly sunshine hours in Nantong, China

The sunniest months in Nantong are June, July and August, when the sun shines an average of 9 hours 25 minutes a day. Least sunny months in Nantong: January, October and December receive an average of 3 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Nantong. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours96148178204241251303311218137145118
Mean daily daylight hours10h 30m11h 9m11h 59m12h 51m13h 35m13h 56m13h 45m13h 7m12h 18m11h 26m10h 41m10h 19m

Solar UV radiation in Nantong, China

Nantong experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure. January, February and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 7. For more detailed information, check out our hourly Nantong UV Index data.

Average daily maximum UV levels by month for Nantong. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)57911111212129975