nomadseason

Monthly climate in Nanjing, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Nanjing features a humid subtropical climate (Cfa). Temperatures typically range between 4 °C (40 °F) and 29 °C (84 °F) through the year, but rarely can drop to -11 °C (13 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 1179 mm (46.4 inches) and receives 117 rainy days on the 1 mm (0.04 inches) threshold annually. Nanjing enjoys an average of 2912 hours of sunshine throughout the year, and daylight varies from 10 hours 4 minutes to 14 hours 12 minutes per day.

Monthly average temperatures in Nanjing, China

The warmest months in Nanjing are June, July and August, with daily mean temperatures ranging from 26 to 29 °C (78 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 6 °C (40 - 43 °F) throughout the day. On average each year, Nanjing experiences 131 days above 25 °C (77.0 °F) and 26 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Nanjing. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(64°F)		26°C
(79°F)		29°C
(84°F)		32°C
(90°F)		36°C
(96°F)		36°C
(96°F)		38°C
(101°F)		38°C
(100°F)		36°C
(97°F)		36°C
(97°F)		28°C
(83°F)		20°C
(68°F)
Mean maximum14°C
(58°F)		21°C
(69°F)		26°C
(79°F)		30°C
(86°F)		34°C
(93°F)		34°C
(93°F)		37°C
(98°F)		36°C
(97°F)		33°C
(92°F)		31°C
(88°F)		25°C
(77°F)		17°C
(63°F)
Average high8°C
(46°F)		10°C
(51°F)		16°C
(62°F)		21°C
(71°F)		26°C
(80°F)		29°C
(85°F)		32°C
(89°F)		32°C
(90°F)		28°C
(83°F)		22°C
(73°F)		18°C
(64°F)		10°C
(51°F)
Daily mean4°C
(40°F)		6°C
(43°F)		12°C
(54°F)		17°C
(62°F)		22°C
(72°F)		26°C
(78°F)		28°C
(83°F)		29°C
(84°F)		24°C
(76°F)		18°C
(65°F)		13°C
(55°F)		6°C
(43°F)
Average low1°C
(34°F)		2°C
(36°F)		8°C
(46°F)		12°C
(54°F)		17°C
(64°F)		22°C
(71°F)		25°C
(78°F)		26°C
(78°F)		21°C
(70°F)		14°C
(58°F)		8°C
(48°F)		2°C
(36°F)
Mean minimum-7°C
(21°F)		-4°C
(25°F)		2°C
(35°F)		6°C
(43°F)		12°C
(54°F)		18°C
(65°F)		22°C
(72°F)		22°C
(72°F)		17°C
(62°F)		8°C
(46°F)		2°C
(36°F)		-5°C
(24°F)
Minimum-10°C
(13°F)		-11°C
(13°F)		-0°C
(31°F)		5°C
(41°F)		10°C
(51°F)		17°C
(62°F)		19°C
(67°F)		21°C
(71°F)		15°C
(60°F)		7°C
(45°F)		-0°C
(32°F)		-7°C
(20°F)

Compare climate in Nanjing with other places

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

Monthly average precipitation in Nanjing, China

Nanjing usually has the most precipitation in June, July and August, with an average of 14 rainy days and 191 mm (7.5 inches) of precipitation per month. The driest months in Nanjing are February, November and December. On average, 45 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Nanjing. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)53 (2.1)52 (2.0)66 (2.6)69 (2.7)143 (5.6)156 (6.2)228 (9.0)189 (7.4)86 (3.4)54 (2.1)44 (1.7)40 (1.6)
Average precipitation days (≥ 1 mm)89109910181410767

Monthly sunshine hours in Nanjing, China

The sunniest months in Nanjing are June, July and August, when the sun shines an average of 9 hours 20 minutes a day. Least sunny months in Nanjing: January, February and December receive an average of 6 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Nanjing. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours158213236241275276286295254232223216
Mean daily daylight hours10h 17m11h 1m11h 59m12h 57m13h 47m14h 12m13h 59m13h 16m12h 20m11h 21m10h 30m10h 4m

Solar UV radiation in Nanjing, China

Nanjing experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure. January, November 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 Nanjing UV Index data.

Average daily maximum UV levels by month for Nanjing. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)568101011111010854