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Monthly climate in Longnan, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Longnan features a humid subtropical climate (Cfa). Temperatures typically range between 10 °C (51 °F) and 29 °C (85 °F) through the year, but rarely can drop to -3 °C (28 °F) or can rise to as high as 41 °C (106 °F). The average annual precipitation amounts to about 1218 mm (47.9 inches) and receives 142 rainy days on the 1 mm (0.04 inches) threshold annually. Longnan enjoys an average of 2954 hours of sunshine throughout the year, and daylight varies from 10 hours 36 minutes to 13 hours 38 minutes per day.

Monthly average temperatures in Longnan, China

The warmest months in Longnan are July, August and September, with daily mean temperatures ranging from 27 to 29 °C (81 - 85 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 11 °C (51 - 53 °F) throughout the day. On average each year, Longnan experiences 172 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Longnan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum26°C
(80°F)		28°C
(83°F)		32°C
(90°F)		33°C
(92°F)		36°C
(98°F)		36°C
(98°F)		41°C
(106°F)		39°C
(103°F)		39°C
(103°F)		37°C
(99°F)		32°C
(90°F)		27°C
(81°F)
Mean maximum24°C
(75°F)		27°C
(80°F)		29°C
(84°F)		31°C
(88°F)		34°C
(93°F)		35°C
(94°F)		38°C
(100°F)		38°C
(101°F)		37°C
(98°F)		35°C
(95°F)		29°C
(85°F)		25°C
(77°F)
Average high15°C
(59°F)		16°C
(60°F)		21°C
(69°F)		24°C
(75°F)		28°C
(84°F)		31°C
(88°F)		34°C
(94°F)		34°C
(94°F)		32°C
(90°F)		26°C
(79°F)		21°C
(71°F)		15°C
(60°F)
Daily mean10°C
(51°F)		11°C
(53°F)		17°C
(62°F)		20°C
(68°F)		24°C
(76°F)		27°C
(81°F)		29°C
(85°F)		29°C
(84°F)		27°C
(81°F)		22°C
(71°F)		17°C
(62°F)		11°C
(52°F)
Average low7°C
(44°F)		8°C
(46°F)		13°C
(56°F)		16°C
(61°F)		21°C
(70°F)		24°C
(76°F)		26°C
(78°F)		25°C
(78°F)		24°C
(75°F)		18°C
(65°F)		13°C
(56°F)		8°C
(46°F)
Mean minimum0°C
(33°F)		2°C
(36°F)		7°C
(45°F)		9°C
(49°F)		15°C
(60°F)		21°C
(70°F)		23°C
(74°F)		23°C
(73°F)		20°C
(68°F)		12°C
(54°F)		8°C
(46°F)		1°C
(34°F)
Minimum-2°C
(28°F)		-3°C
(28°F)		5°C
(40°F)		8°C
(46°F)		11°C
(52°F)		18°C
(65°F)		21°C
(71°F)		22°C
(72°F)		17°C
(63°F)		10°C
(51°F)		5°C
(41°F)		0°C
(32°F)

Compare climate in Longnan with other places

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

Monthly average precipitation in Longnan, China

Longnan usually has the most precipitation in April, May and June, with an average of 16 rainy days and 182 mm (7.2 inches) of precipitation per month. The driest months in Longnan are January, October and December. On average, 36 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Longnan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)39 (1.5)71 (2.8)144 (5.7)154 (6.0)159 (6.2)235 (9.3)87 (3.4)128 (5.0)88 (3.4)41 (1.6)45 (1.8)27 (1.1)
Average precipitation days (≥ 1 mm)5816151618141913675

Monthly sunshine hours in Longnan, China

The sunniest months in Longnan are May, July and August, when the sun shines an average of 9 hours 44 minutes a day. Least sunny months in Longnan: January, February and March receive an average of 6 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Longnan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours186214205226282255313310277234224224
Mean daily daylight hours10h 45m11h 18m12h 0m12h 44m13h 20m13h 38m13h 29m12h 57m12h 16m11h 32m10h 55m10h 36m

Solar UV radiation in Longnan, China

Longnan experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 13 - 13, which corresponds to the Extreme category of sun exposure. January, November and December are in the High / Very High exposure category. In these months, the maximum values of the UV index do not exceed 8. For more detailed information, check out our hourly Longnan UV Index data.

Average daily maximum UV levels by month for Longnan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)79111113131313111086