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Monthly climate in Sano, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sano features a humid subtropical climate (Cfa). Temperatures typically range between 4 °C (39 °F) and 27 °C (82 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 37 °C (98 °F). The average annual precipitation amounts to about 1669 mm (65.7 inches) and receives 151 rainy days on the 1 mm (0.04 inches) threshold annually. Sano enjoys an average of 2899 hours of sunshine throughout the year, and daylight varies from 9 hours 43 minutes to 14 hours 34 minutes per day.

Monthly average temperatures in Sano, Japan

The warmest months in Sano are July, August and September, with daily mean temperatures ranging from 23 to 27 °C (74 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 6 °C (39 - 43 °F) throughout the day. On average each year, Sano experiences 97 days above 25 °C (77.0 °F) and 37 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sano. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum17°C
(63°F)		21°C
(70°F)		24°C
(75°F)		29°C
(84°F)		33°C
(92°F)		33°C
(92°F)		37°C
(98°F)		37°C
(98°F)		35°C
(95°F)		31°C
(88°F)		24°C
(75°F)		19°C
(66°F)
Mean maximum15°C
(59°F)		17°C
(63°F)		22°C
(72°F)		26°C
(79°F)		31°C
(88°F)		30°C
(85°F)		34°C
(94°F)		35°C
(96°F)		33°C
(91°F)		28°C
(84°F)		22°C
(72°F)		17°C
(63°F)
Average high9°C
(48°F)		10°C
(50°F)		14°C
(58°F)		19°C
(66°F)		24°C
(75°F)		26°C
(79°F)		29°C
(84°F)		31°C
(89°F)		26°C
(80°F)		21°C
(70°F)		17°C
(62°F)		11°C
(52°F)
Daily mean4°C
(39°F)		5°C
(41°F)		9°C
(49°F)		14°C
(57°F)		19°C
(66°F)		22°C
(72°F)		25°C
(78°F)		27°C
(82°F)		23°C
(74°F)		18°C
(64°F)		12°C
(53°F)		6°C
(43°F)
Average low-0°C
(32°F)		1°C
(33°F)		4°C
(40°F)		9°C
(48°F)		14°C
(58°F)		18°C
(65°F)		23°C
(73°F)		24°C
(76°F)		20°C
(68°F)		14°C
(58°F)		7°C
(45°F)		2°C
(36°F)
Mean minimum-4°C
(25°F)		-3°C
(27°F)		-2°C
(28°F)		2°C
(36°F)		7°C
(44°F)		14°C
(58°F)		19°C
(66°F)		19°C
(67°F)		15°C
(59°F)		8°C
(46°F)		1°C
(34°F)		-2°C
(28°F)
Minimum-9°C
(16°F)		-5°C
(23°F)		-4°C
(26°F)		-1°C
(31°F)		5°C
(41°F)		12°C
(54°F)		17°C
(63°F)		16°C
(61°F)		13°C
(55°F)		5°C
(41°F)		-2°C
(29°F)		-3°C
(27°F)

Compare climate in Sano with other places

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

Monthly average precipitation in Sano, Japan

Sano usually has the most precipitation in July, September and October, with an average of 19 rainy days and 251 mm (9.9 inches) of precipitation per month. The driest months in Sano are January, February and December. On average, 42 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sano. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)40 (1.6)42 (1.7)129 (5.1)127 (5.0)137 (5.4)175 (6.9)274 (10.8)163 (6.4)213 (8.4)267 (10.5)57 (2.3)45 (1.8)
Average precipitation days (≥ 1 mm)56101213172117211676

Monthly sunshine hours in Sano, Japan

The sunniest months in Sano are April, May and August, when the sun shines an average of 8 hours 57 minutes a day. Least sunny months in Sano: January, September and October receive an average of 6 hours 44 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sano. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours190238263276278261227269224206231231
Mean daily daylight hours9h 58m10h 50m11h 57m13h 7m14h 5m14h 34m14h 20m13h 29m12h 22m11h 14m10h 14m9h 43m

Solar UV radiation in Sano, Japan

Sano experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure. January, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Sano UV Index data.

Average daily maximum UV levels by month for Sano. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3579101111109653