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Monthly climate in Sapporo, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sapporo features a humid continental climate (Dfb). Temperatures typically range between -6 °C (21 °F) and 21 °C (69 °F) through the year, but rarely can drop to -19 °C (-2 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 1246 mm (49.0 inches) and receives 181 rainy days on the 1 mm (0.04 inches) threshold annually. Sapporo enjoys an average of 2914 hours of sunshine throughout the year, and daylight varies from 9 hours 2 minutes to 15 hours 17 minutes per day.

Monthly average temperatures in Sapporo, Japan

The warmest months in Sapporo are July, August and September, with daily mean temperatures ranging from 17 to 21 °C (63 - 69 °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 - 26 °F) throughout the day. On average each year, Sapporo experiences 19 days above 25 °C (77.0 °F) and 135 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sapporo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum4°C
(40°F)		5°C
(42°F)		14°C
(58°F)		20°C
(69°F)		30°C
(87°F)		26°C
(80°F)		31°C
(88°F)		31°C
(88°F)		29°C
(84°F)		24°C
(76°F)		17°C
(62°F)		11°C
(53°F)
Mean maximum2°C
(36°F)		4°C
(39°F)		10°C
(50°F)		17°C
(63°F)		24°C
(76°F)		23°C
(73°F)		29°C
(84°F)		29°C
(85°F)		26°C
(79°F)		21°C
(71°F)		15°C
(60°F)		8°C
(46°F)
Average high-3°C
(27°F)		-2°C
(28°F)		3°C
(38°F)		9°C
(49°F)		16°C
(61°F)		19°C
(66°F)		23°C
(74°F)		24°C
(75°F)		21°C
(70°F)		15°C
(59°F)		7°C
(45°F)		-1°C
(31°F)
Daily mean-6°C
(21°F)		-5°C
(23°F)		-0°C
(32°F)		5°C
(41°F)		12°C
(53°F)		15°C
(60°F)		20°C
(68°F)		21°C
(69°F)		17°C
(63°F)		11°C
(52°F)		4°C
(39°F)		-3°C
(26°F)
Average low-9°C
(15°F)		-9°C
(17°F)		-4°C
(25°F)		1°C
(33°F)		7°C
(46°F)		12°C
(53°F)		17°C
(63°F)		18°C
(64°F)		13°C
(56°F)		7°C
(45°F)		1°C
(34°F)		-6°C
(21°F)
Mean minimum-15°C
(5°F)		-15°C
(6°F)		-11°C
(12°F)		-5°C
(24°F)		3°C
(37°F)		7°C
(45°F)		13°C
(56°F)		12°C
(54°F)		7°C
(45°F)		1°C
(34°F)		-5°C
(23°F)		-12°C
(12°F)
Minimum-19°C
(-2°F)		-17°C
(2°F)		-13°C
(9°F)		-6°C
(21°F)		2°C
(36°F)		6°C
(42°F)		9°C
(49°F)		10°C
(51°F)		4°C
(40°F)		-1°C
(30°F)		-8°C
(18°F)		-15°C
(6°F)

Compare climate in Sapporo with other places

Compare temperature, precipitation, sunshine, UV index in Sapporo, Japan with other places around the world.

Monthly average precipitation in Sapporo, Japan

Sapporo usually has the most precipitation in June, August and September, with an average of 13 rainy days and 144 mm (5.7 inches) of precipitation per month. The driest months in Sapporo are January, February and December. On average, 66 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sapporo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)56 (2.2)63 (2.5)86 (3.4)87 (3.4)94 (3.7)123 (4.8)113 (4.5)183 (7.2)126 (5.0)120 (4.7)117 (4.6)78 (3.1)
Average precipitation days (≥ 1 mm)131814131212121414172022

Monthly sunshine hours in Sapporo, Japan

The sunniest months in Sapporo are May, June and July, when the sun shines an average of 10 hours 4 minutes a day. Least sunny months in Sapporo: January, November and December receive an average of 5 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sapporo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours133189242286309296321292269233176163
Mean daily daylight hours9h 23m10h 30m11h 56m13h 24m14h 39m15h 17m14h 58m13h 52m12h 28m11h 0m9h 43m9h 2m

Solar UV radiation in Sapporo, Japan

Sapporo 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, February 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 Sapporo UV Index data.

Average daily maximum UV levels by month for Sapporo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2367999108532