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Monthly climate in Toyokoro, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Toyokoro features a humid continental climate (Dfb). Temperatures typically range between -6 °C (21 °F) and 20 °C (68 °F) through the year, but rarely can drop to -26 °C (-14 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 1059 mm (41.7 inches) and receives 108 rainy days on the 1 mm (0.04 inches) threshold annually. Toyokoro enjoys an average of 2941 hours of sunshine throughout the year, and daylight varies from 9 hours 4 minutes to 15 hours 16 minutes per day.

Monthly average temperatures in Toyokoro, Japan

The warmest months in Toyokoro are July, August and September, with daily mean temperatures ranging from 17 to 20 °C (63 - 68 °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 - 28 °F) throughout the day. On average each year, Toyokoro experiences 19 days above 25 °C (77.0 °F) and 132 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Toyokoro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum6°C
(44°F)		8°C
(47°F)		16°C
(62°F)		24°C
(76°F)		36°C
(97°F)		29°C
(85°F)		33°C
(92°F)		33°C
(92°F)		31°C
(88°F)		25°C
(77°F)		19°C
(66°F)		14°C
(57°F)
Mean maximum5°C
(40°F)		6°C
(43°F)		13°C
(56°F)		20°C
(69°F)		27°C
(80°F)		24°C
(76°F)		31°C
(87°F)		32°C
(89°F)		28°C
(83°F)		23°C
(74°F)		17°C
(63°F)		9°C
(49°F)
Average high-1°C
(30°F)		-0°C
(32°F)		5°C
(42°F)		11°C
(52°F)		16°C
(62°F)		18°C
(65°F)		21°C
(71°F)		23°C
(73°F)		21°C
(70°F)		16°C
(61°F)		9°C
(49°F)		2°C
(35°F)
Daily mean-6°C
(21°F)		-5°C
(23°F)		1°C
(34°F)		6°C
(44°F)		12°C
(54°F)		15°C
(58°F)		18°C
(65°F)		20°C
(68°F)		17°C
(63°F)		12°C
(53°F)		5°C
(42°F)		-3°C
(28°F)
Average low-11°C
(12°F)		-11°C
(13°F)		-4°C
(26°F)		1°C
(35°F)		8°C
(46°F)		11°C
(52°F)		16°C
(60°F)		17°C
(63°F)		14°C
(57°F)		7°C
(45°F)		1°C
(34°F)		-7°C
(20°F)
Mean minimum-19°C
(-2°F)		-19°C
(-2°F)		-13°C
(9°F)		-3°C
(26°F)		3°C
(37°F)		7°C
(45°F)		11°C
(53°F)		12°C
(54°F)		7°C
(45°F)		1°C
(33°F)		-5°C
(23°F)		-14°C
(7°F)
Minimum-22°C
(-7°F)		-26°C
(-14°F)		-16°C
(4°F)		-4°C
(25°F)		2°C
(36°F)		4°C
(40°F)		10°C
(50°F)		10°C
(51°F)		5°C
(41°F)		-0°C
(32°F)		-8°C
(19°F)		-16°C
(3°F)

Compare climate in Toyokoro with other places

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

Monthly average precipitation in Toyokoro, Japan

Toyokoro usually has the most precipitation in August, September and October, with an average of 11 rainy days and 141 mm (5.5 inches) of precipitation per month. The driest months in Toyokoro are January, February and December. On average, 49 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Toyokoro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)50 (2.0)49 (1.9)91 (3.6)80 (3.1)78 (3.1)89 (3.5)76 (3.0)145 (5.7)117 (4.6)161 (6.3)75 (3.0)48 (1.9)
Average precipitation days (≥ 1 mm)67910911812111186

Monthly sunshine hours in Toyokoro, Japan

The sunniest months in Toyokoro are April, May and June, when the sun shines an average of 9 hours 31 minutes a day. Least sunny months in Toyokoro: January, November and December receive an average of 6 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Toyokoro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours172221268281303281269254242229203212
Mean daily daylight hours9h 24m10h 31m11h 56m13h 23m14h 38m15h 16m14h 57m13h 51m12h 27m11h 1m9h 44m9h 4m

Solar UV radiation in Toyokoro, Japan

Toyokoro experiences the highest level of ultraviolet (UV) radiation in June, 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 Toyokoro UV Index data.

Average daily maximum UV levels by month for Toyokoro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)23588101098532