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Monthly climate in Heyuan, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Heyuan features a humid subtropical climate (Cwa). Temperatures typically range between 14 °C (58 °F) and 29 °C (84 °F) through the year, but rarely can drop to 0 °C (33 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1487 mm (58.6 inches) and receives 162 rainy days on the 1 mm (0.04 inches) threshold annually. Heyuan enjoys an average of 3056 hours of sunshine throughout the year, and daylight varies from 10 hours 41 minutes to 13 hours 33 minutes per day.

Monthly average temperatures in Heyuan, China

The warmest months in Heyuan are July, August and September, with daily mean temperatures ranging from 28 to 29 °C (82 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 14 to 15 °C (58 - 59 °F) throughout the day. On average each year, Heyuan experiences 204 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Heyuan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(82°F)		29°C
(85°F)		32°C
(89°F)		33°C
(92°F)		36°C
(98°F)		37°C
(98°F)		37°C
(98°F)		37°C
(99°F)		35°C
(96°F)		35°C
(95°F)		30°C
(87°F)		29°C
(84°F)
Mean maximum26°C
(79°F)		27°C
(81°F)		29°C
(85°F)		31°C
(88°F)		34°C
(93°F)		34°C
(93°F)		36°C
(97°F)		36°C
(96°F)		35°C
(95°F)		34°C
(93°F)		30°C
(86°F)		26°C
(80°F)
Average high19°C
(66°F)		19°C
(67°F)		23°C
(74°F)		26°C
(79°F)		29°C
(85°F)		31°C
(88°F)		33°C
(91°F)		32°C
(90°F)		32°C
(90°F)		28°C
(83°F)		24°C
(76°F)		19°C
(67°F)
Daily mean14°C
(58°F)		15°C
(59°F)		19°C
(67°F)		22°C
(72°F)		26°C
(79°F)		28°C
(82°F)		29°C
(84°F)		28°C
(83°F)		28°C
(82°F)		24°C
(75°F)		20°C
(68°F)		15°C
(59°F)
Average low10°C
(51°F)		11°C
(53°F)		16°C
(61°F)		19°C
(66°F)		23°C
(74°F)		25°C
(78°F)		26°C
(79°F)		26°C
(79°F)		25°C
(77°F)		21°C
(69°F)		16°C
(62°F)		11°C
(52°F)
Mean minimum4°C
(39°F)		6°C
(42°F)		10°C
(50°F)		12°C
(55°F)		18°C
(65°F)		23°C
(73°F)		24°C
(76°F)		24°C
(75°F)		22°C
(71°F)		15°C
(60°F)		11°C
(52°F)		5°C
(42°F)
Minimum0°C
(33°F)		2°C
(36°F)		6°C
(43°F)		9°C
(48°F)		15°C
(58°F)		21°C
(70°F)		24°C
(75°F)		23°C
(74°F)		18°C
(65°F)		14°C
(57°F)		10°C
(50°F)		4°C
(39°F)

Compare climate in Heyuan with other places

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

Monthly average precipitation in Heyuan, China

Heyuan usually has the most precipitation in May, June and August, with an average of 22 rainy days and 249 mm (9.8 inches) of precipitation per month. The driest months in Heyuan are January, November and December. On average, 25 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Heyuan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)33 (1.3)53 (2.1)127 (5.0)122 (4.8)177 (7.0)325 (12.8)168 (6.6)246 (9.7)136 (5.4)59 (2.3)24 (0.9)19 (0.8)
Average precipitation days (≥ 1 mm)4814131826222418744

Monthly sunshine hours in Heyuan, China

The sunniest months in Heyuan are July, August and September, when the sun shines an average of 9 hours 22 minutes a day. Least sunny months in Heyuan: January, April and June receive an average of 7 hours 17 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Heyuan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours209233240224269229303279279269251264
Mean daily daylight hours10h 50m11h 20m12h 0m12h 42m13h 16m13h 33m13h 25m12h 54m12h 15m11h 34m10h 59m10h 41m

Solar UV radiation in Heyuan, China

Heyuan experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 13 - 14, 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 9. For more detailed information, check out our hourly Heyuan UV Index data.

Average daily maximum UV levels by month for Heyuan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)710121214131313121097