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Monthly climate in Sansha, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sansha features a tropical savanna climate (Aw). Temperatures typically range between 24 °C (76 °F) and 29 °C (85 °F) through the year, but rarely can drop to 19 °C (67 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 1401 mm (55.1 inches) and receives 165 rainy days on the 1 mm (0.04 inches) threshold annually. Sansha enjoys an average of 3563 hours of sunshine throughout the year, and daylight varies from 11 hours 7 minutes to 13 hours 6 minutes per day.

Monthly average temperatures in Sansha, China

The warmest months in Sansha are June, July and August, with daily mean temperatures ranging from 29 to 29 °C (84 - 85 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 24 to 25 °C (76 - 77 °F) throughout the day. On average each year, Sansha experiences 271 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 Sansha. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum26°C
(79°F)		27°C
(81°F)		29°C
(84°F)		30°C
(86°F)		30°C
(87°F)		31°C
(88°F)		31°C
(87°F)		30°C
(87°F)		30°C
(87°F)		30°C
(86°F)		29°C
(84°F)		27°C
(80°F)
Mean maximum26°C
(78°F)		26°C
(79°F)		28°C
(82°F)		29°C
(84°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		30°C
(85°F)		29°C
(84°F)		28°C
(82°F)		26°C
(80°F)
Average high24°C
(76°F)		25°C
(76°F)		26°C
(79°F)		27°C
(82°F)		29°C
(85°F)		30°C
(86°F)		29°C
(85°F)		29°C
(85°F)		29°C
(84°F)		28°C
(83°F)		27°C
(80°F)		25°C
(77°F)
Daily mean24°C
(76°F)		24°C
(76°F)		26°C
(78°F)		27°C
(81°F)		29°C
(84°F)		29°C
(85°F)		29°C
(84°F)		29°C
(84°F)		28°C
(83°F)		27°C
(81°F)		26°C
(79°F)		25°C
(77°F)
Average low24°C
(75°F)		24°C
(75°F)		25°C
(77°F)		26°C
(80°F)		28°C
(82°F)		29°C
(84°F)		28°C
(83°F)		28°C
(83°F)		27°C
(82°F)		27°C
(80°F)		26°C
(79°F)		24°C
(76°F)
Mean minimum22°C
(71°F)		22°C
(71°F)		23°C
(74°F)		25°C
(77°F)		26°C
(79°F)		27°C
(81°F)		27°C
(80°F)		26°C
(80°F)		26°C
(79°F)		25°C
(78°F)		25°C
(77°F)		22°C
(73°F)
Minimum19°C
(67°F)		19°C
(67°F)		22°C
(72°F)		23°C
(74°F)		26°C
(78°F)		27°C
(80°F)		26°C
(79°F)		26°C
(79°F)		25°C
(78°F)		24°C
(76°F)		24°C
(76°F)		21°C
(70°F)

Compare climate in Sansha with other places

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

Monthly average precipitation in Sansha, China

Sansha usually has the most precipitation in July, October and November, with an average of 19 rainy days and 226 mm (8.9 inches) of precipitation per month. The driest months in Sansha are February, March and April. On average, 24 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sansha. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)36 (1.4)22 (0.9)18 (0.7)32 (1.2)77 (3.0)121 (4.8)209 (8.2)182 (7.1)166 (6.5)284 (11.2)185 (7.3)69 (2.7)
Average precipitation days (≥ 1 mm)97481213171819231817

Monthly sunshine hours in Sansha, China

The sunniest months in Sansha are March, May and July, when the sun shines an average of 10 hours 30 minutes a day. Least sunny months in Sansha: January, November and December receive an average of 8 hours 27 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sansha. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours233277316316330312329314302285271272
Mean daily daylight hours11h 14m11h 34m12h 2m12h 30m12h 54m13h 6m13h 0m12h 39m12h 12m11h 44m11h 20m11h 7m

Solar UV radiation in Sansha, China

Sansha experiences the highest level of ultraviolet (UV) radiation in April, August and September, when the maximum UV index can reach values of 14 - 14, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 10. For more detailed information, check out our hourly Sansha UV Index data.

Average daily maximum UV levels by month for Sansha. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)10121314141314141412109