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Monthly climate in Si'an, Jiangsu, China

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Si'an features a humid subtropical climate (Cfa).Temperatures typically range between 5 °C (41 °F) and 28 °C (84 °F) through the year, but rarely can drop to -8 °C (17 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 1189 mm (46.8 inches) and receives 116 rainy days on the 1 mm (0.04 inches) threshold annually.Si'an enjoys an average of 3031 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 Si'an, Jiangsu, China §

The warmest months in Si'an are July, August and September, with daily mean temperatures ranging from 24 to 28 °C (76 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 7 °C (41 - 45 °F) throughout the day. On average each year, Si'an experiences 121 days above 25 °C (77.0 °F) and 21 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Si'an, Jiangsu, China.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 18°C
(64°F)		 24°C
(75°F)		 27°C
(81°F)		 30°C
(87°F)		 35°C
(95°F)		 37°C
(99°F)		 39°C
(103°F)		 37°C
(99°F)		 34°C
(94°F)		 32°C
(90°F)		 27°C
(81°F)		 20°C
(68°F)
Mean maximum 14°C
(58°F)		 19°C
(66°F)		 24°C
(76°F)		 28°C
(82°F)		 32°C
(90°F)		 33°C
(92°F)		 36°C
(97°F)		 35°C
(95°F)		 32°C
(91°F)		 28°C
(84°F)		 24°C
(75°F)		 17°C
(64°F)
Average high 8°C
(47°F)		 10°C
(50°F)		 15°C
(59°F)		 20°C
(68°F)		 25°C
(77°F)		 28°C
(83°F)		 31°C
(88°F)		 32°C
(89°F)		 28°C
(82°F)		 22°C
(72°F)		 17°C
(64°F)		 11°C
(52°F)
Daily mean 5°C
(41°F)		 6°C
(43°F)		 11°C
(51°F)		 15°C
(59°F)		 21°C
(69°F)		 24°C
(76°F)		 28°C
(82°F)		 28°C
(84°F)		 24°C
(76°F)		 19°C
(66°F)		 13°C
(56°F)		 7°C
(45°F)
Average low 2°C
(36°F)		 2°C
(36°F)		 7°C
(45°F)		 11°C
(52°F)		 16°C
(62°F)		 21°C
(70°F)		 25°C
(78°F)		 26°C
(79°F)		 22°C
(71°F)		 15°C
(60°F)		 10°C
(50°F)		 3°C
(38°F)
Mean minimum -5°C
(23°F)		 -3°C
(27°F)		 2°C
(35°F)		 5°C
(41°F)		 11°C
(53°F)		 18°C
(64°F)		 22°C
(71°F)		 23°C
(73°F)		 17°C
(64°F)		 9°C
(49°F)		 3°C
(38°F)		 -4°C
(25°F)
Minimum -8°C
(17°F)		 -5°C
(23°F)		 0°C
(33°F)		 4°C
(39°F)		 9°C
(49°F)		 16°C
(61°F)		 18°C
(65°F)		 21°C
(71°F)		 16°C
(61°F)		 8°C
(47°F)		 1°C
(34°F)		 -7°C
(20°F)

Compare climate in Si'an with other places

Compare temperature, precipitation, sunshine, UV index in Si'an, Jiangsu, China with other places around the world.

Monthly average precipitation in Si'an, Jiangsu, China §

Si'an usually has the most precipitation in July, August and September, with an average of 14 rainy days and 188 mm (7.4 inches) of precipitation per month.The driest months in Si'an are January, February and December. On average, 48 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Si'an, Jiangsu, China.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 47 (1.8) 52 (2.0) 56 (2.2) 70 (2.8) 112 (4.4) 131 (5.2) 231 (9.1) 192 (7.6) 142 (5.6) 58 (2.3) 53 (2.1) 44 (1.7)
Average precipitation days (≥ 1 mm) 8 8 9 8 9 10 17 14 11 7 7 8

Monthly sunshine hours in Si'an, Jiangsu, China §

The sunniest months in Si'an are May, June and August, when the sun shines an average of 9 hours 35 minutes a day.Least sunny months in Si'an: 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 Si'an, Jiangsu, China.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 166 217 254 264 288 286 286 307 268 246 225 219
Mean daily daylight hours 10h 17m 11h 1m 11h 59m 12h 57m 13h 47m 14h 12m 13h 59m 13h 16m 12h 20m 11h 21m 10h 30m 10h 4m

Solar UV radiation in Si'an, Jiangsu, China §

Si'an experiences the highest level of ultraviolet (UV) radiation in April, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / 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 6. For more detailed information, check out our hourly Si'an UV Index data.

Average daily maximum UV levels by month for Si'an, Jiangsu, China.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 4 6 8 10 10 10 11 11 10 8 6 4