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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 8 °C (46 °F) and 27 °C (80 °F) through the year, but rarely can drop to -7 °C (20 °F) or can rise to as high as 37 °C (100 °F). The average annual precipitation amounts to about 1577 mm (62.1 inches) and receives 162 rainy days on the 1 mm (0.04 inches) threshold annually. Longnan enjoys an average of 2935 hours of sunshine throughout the year, and daylight varies from 10 hours 23 minutes to 13 hours 52 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 24 to 27 °C (75 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 8 °C (46 - 47 °F) throughout the day. On average each year, Longnan experiences 132 days above 25 °C (77.0 °F) and 14 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
Maximum24°C
(75°F)		24°C
(75°F)		28°C
(83°F)		32°C
(89°F)		35°C
(96°F)		35°C
(95°F)		37°C
(99°F)		37°C
(100°F)		35°C
(95°F)		34°C
(94°F)		28°C
(83°F)		26°C
(79°F)
Mean maximum21°C
(70°F)		22°C
(72°F)		26°C
(80°F)		30°C
(86°F)		33°C
(91°F)		32°C
(90°F)		36°C
(97°F)		35°C
(96°F)		34°C
(94°F)		32°C
(90°F)		25°C
(78°F)		22°C
(71°F)
Average high12°C
(54°F)		13°C
(56°F)		18°C
(65°F)		22°C
(72°F)		26°C
(79°F)		28°C
(82°F)		32°C
(90°F)		32°C
(90°F)		29°C
(85°F)		23°C
(74°F)		19°C
(66°F)		13°C
(55°F)
Daily mean8°C
(46°F)		8°C
(47°F)		13°C
(56°F)		17°C
(62°F)		21°C
(70°F)		24°C
(75°F)		27°C
(80°F)		27°C
(80°F)		24°C
(75°F)		18°C
(65°F)		13°C
(57°F)		8°C
(47°F)
Average low4°C
(39°F)		5°C
(41°F)		9°C
(48°F)		12°C
(54°F)		17°C
(63°F)		20°C
(69°F)		23°C
(73°F)		23°C
(73°F)		20°C
(68°F)		15°C
(58°F)		10°C
(49°F)		4°C
(40°F)
Mean minimum-3°C
(27°F)		-2°C
(29°F)		2°C
(36°F)		5°C
(42°F)		11°C
(51°F)		17°C
(63°F)		21°C
(70°F)		20°C
(69°F)		15°C
(60°F)		8°C
(47°F)		4°C
(39°F)		-1°C
(30°F)
Minimum-6°C
(22°F)		-7°C
(20°F)		-0°C
(31°F)		2°C
(36°F)		8°C
(46°F)		12°C
(55°F)		20°C
(69°F)		19°C
(67°F)		13°C
(56°F)		7°C
(46°F)		2°C
(35°F)		-2°C
(28°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 May, June and August, with an average of 18 rainy days and 237 mm (9.3 inches) of precipitation per month. The driest months in Longnan are January, October and December. On average, 54 mm (2.1 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)55 (2.2)89 (3.5)153 (6.0)131 (5.1)227 (9.0)325 (12.8)155 (6.1)159 (6.3)112 (4.4)57 (2.2)65 (2.5)49 (1.9)
Average precipitation days (≥ 1 mm)811181518211615129910

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 40 minutes a day. Least sunny months in Longnan: January, February and December receive an average of 6 hours 34 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 hours176206221251285232300313272241220215
Mean daily daylight hours10h 34m11h 11m11h 59m12h 49m13h 31m13h 52m13h 41m13h 5m12h 17m11h 28m10h 45m10h 23m

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 exposure category. In these months, the maximum values of the UV index do not exceed 7. 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)6811121313131311976