nomadseason

Monthly climate in Sihai, China

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sihai features a humid continental climate (Dwa). Temperatures typically range between -6 °C (21 °F) and 25 °C (77 °F) through the year, but rarely can drop to -23 °C (-10 °F) or can rise to as high as 37 °C (98 °F). The average annual precipitation amounts to about 734 mm (28.9 inches) and receives 71 rainy days on the 1 mm (0.04 inches) threshold annually. Sihai enjoys an average of 3374 hours of sunshine throughout the year, and daylight varies from 9 hours 18 minutes to 15 hours 0 minutes per day.

Monthly average temperatures in Sihai, China

The warmest months in Sihai are June, July and August, with daily mean temperatures ranging from 23 to 25 °C (74 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -3 °C (21 - 27 °F) throughout the day. On average each year, Sihai experiences 95 days above 25 °C (77.0 °F) and 123 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sihai. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum9°C
(49°F)		21°C
(69°F)		24°C
(76°F)		32°C
(89°F)		34°C
(94°F)		37°C
(98°F)		36°C
(97°F)		35°C
(95°F)		33°C
(92°F)		27°C
(81°F)		22°C
(71°F)		10°C
(50°F)
Mean maximum6°C
(44°F)		13°C
(55°F)		20°C
(68°F)		27°C
(81°F)		32°C
(91°F)		33°C
(92°F)		34°C
(93°F)		33°C
(92°F)		30°C
(87°F)		24°C
(75°F)		17°C
(63°F)		7°C
(45°F)
Average high-0°C
(32°F)		3°C
(38°F)		11°C
(52°F)		18°C
(65°F)		25°C
(77°F)		29°C
(84°F)		28°C
(83°F)		28°C
(83°F)		24°C
(76°F)		16°C
(62°F)		8°C
(47°F)		1°C
(34°F)
Daily mean-6°C
(21°F)		-3°C
(27°F)		5°C
(42°F)		12°C
(55°F)		19°C
(66°F)		23°C
(74°F)		25°C
(77°F)		24°C
(75°F)		19°C
(67°F)		10°C
(51°F)		2°C
(37°F)		-5°C
(24°F)
Average low-11°C
(12°F)		-8°C
(18°F)		-0°C
(32°F)		6°C
(43°F)		12°C
(54°F)		17°C
(64°F)		21°C
(70°F)		19°C
(67°F)		14°C
(58°F)		5°C
(41°F)		-2°C
(29°F)		-9°C
(16°F)
Mean minimum-18°C
(-1°F)		-15°C
(5°F)		-6°C
(21°F)		-1°C
(31°F)		6°C
(43°F)		11°C
(52°F)		16°C
(62°F)		15°C
(59°F)		9°C
(48°F)		-1°C
(30°F)		-8°C
(17°F)		-16°C
(3°F)
Minimum-23°C
(-10°F)		-17°C
(1°F)		-10°C
(14°F)		-3°C
(27°F)		2°C
(35°F)		10°C
(50°F)		15°C
(58°F)		12°C
(54°F)		5°C
(41°F)		-2°C
(28°F)		-10°C
(14°F)		-18°C
(-0°F)

Compare climate in Sihai with other places

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

Monthly average precipitation in Sihai, China

Sihai usually has the most precipitation in July, August and September, with an average of 13 rainy days and 178 mm (7.0 inches) of precipitation per month. The driest months in Sihai are January, February and December. On average, 4 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sihai. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)2 (0.1)8 (0.3)19 (0.7)22 (0.9)29 (1.1)63 (2.5)262 (10.3)197 (7.8)75 (2.9)37 (1.5)18 (0.7)3 (0.1)
Average precipitation days (≥ 1 mm)014251018158431

Monthly sunshine hours in Sihai, China

The sunniest months in Sihai are May, June and August, when the sun shines an average of 10 hours 27 minutes a day. Least sunny months in Sihai: January, November and December receive an average of 7 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sihai. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours215259297299328322290311280266244259
Mean daily daylight hours9h 37m10h 38m11h 56m13h 17m14h 26m15h 0m14h 43m13h 43m12h 25m11h 5m9h 55m9h 18m

Solar UV radiation in Sihai, China

Sihai experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Sihai UV Index data.

Average daily maximum UV levels by month for Sihai. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2458991098632