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Monthly climate in Rankoshimachi, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Rankoshimachi features a humid continental climate (Dfb). Temperatures typically range between -4 °C (24 °F) and 21 °C (69 °F) through the year, but rarely can drop to -15 °C (5 °F) or can rise to as high as 31 °C (89 °F). The average annual precipitation amounts to about 1288 mm (50.7 inches) and receives 188 rainy days on the 1 mm (0.04 inches) threshold annually. Rankoshimachi enjoys an average of 2954 hours of sunshine throughout the year, and daylight varies from 9 hours 4 minutes to 15 hours 15 minutes per day.

Monthly average temperatures in Rankoshimachi, Japan

The warmest months in Rankoshimachi are July, August and September, with daily mean temperatures ranging from 18 to 21 °C (64 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to -2 °C (24 - 28 °F) throughout the day. On average each year, Rankoshimachi experiences 14 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 Rankoshimachi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum4°C
(40°F)		7°C
(44°F)		12°C
(55°F)		17°C
(63°F)		25°C
(77°F)		24°C
(76°F)		30°C
(87°F)		31°C
(89°F)		28°C
(82°F)		23°C
(74°F)		16°C
(60°F)		11°C
(52°F)
Mean maximum3°C
(38°F)		5°C
(41°F)		9°C
(49°F)		15°C
(59°F)		21°C
(70°F)		21°C
(70°F)		28°C
(82°F)		28°C
(83°F)		25°C
(78°F)		21°C
(70°F)		15°C
(59°F)		8°C
(46°F)
Average high-2°C
(29°F)		-1°C
(30°F)		4°C
(39°F)		8°C
(47°F)		15°C
(59°F)		18°C
(64°F)		23°C
(73°F)		23°C
(74°F)		21°C
(70°F)		15°C
(59°F)		7°C
(46°F)		-0°C
(32°F)
Daily mean-4°C
(24°F)		-4°C
(25°F)		1°C
(33°F)		5°C
(41°F)		11°C
(52°F)		15°C
(59°F)		20°C
(68°F)		21°C
(69°F)		18°C
(64°F)		11°C
(53°F)		5°C
(41°F)		-2°C
(28°F)
Average low-7°C
(19°F)		-7°C
(20°F)		-3°C
(27°F)		1°C
(35°F)		8°C
(46°F)		12°C
(53°F)		17°C
(63°F)		18°C
(65°F)		14°C
(58°F)		8°C
(47°F)		2°C
(36°F)		-5°C
(23°F)
Mean minimum-13°C
(8°F)		-12°C
(10°F)		-8°C
(17°F)		-4°C
(26°F)		3°C
(38°F)		7°C
(45°F)		14°C
(57°F)		13°C
(56°F)		9°C
(48°F)		2°C
(36°F)		-4°C
(24°F)		-11°C
(12°F)
Minimum-15°C
(5°F)		-15°C
(6°F)		-10°C
(15°F)		-5°C
(23°F)		3°C
(37°F)		5°C
(41°F)		12°C
(53°F)		11°C
(52°F)		7°C
(46°F)		2°C
(36°F)		-9°C
(16°F)		-13°C
(8°F)

Compare climate in Rankoshimachi with other places

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

Monthly average precipitation in Rankoshimachi, Japan

Rankoshimachi usually has the most precipitation in August, September and November, with an average of 16 rainy days and 138 mm (5.4 inches) of precipitation per month. The driest months in Rankoshimachi are January, February and May. On average, 80 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rankoshimachi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)74 (2.9)81 (3.2)93 (3.7)89 (3.5)84 (3.3)110 (4.3)100 (3.9)147 (5.8)131 (5.2)127 (5.0)136 (5.4)116 (4.6)
Average precipitation days (≥ 1 mm)172014111212111414162126

Monthly sunshine hours in Rankoshimachi, Japan

The sunniest months in Rankoshimachi are May, June and July, when the sun shines an average of 10 hours 2 minutes a day. Least sunny months in Rankoshimachi: January, November and December receive an average of 5 hours 18 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rankoshimachi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours135192251291311296314294273239185168
Mean daily daylight hours9h 24m10h 31m11h 56m13h 23m14h 38m15h 15m14h 56m13h 51m12h 27m11h 1m9h 44m9h 4m

Solar UV radiation in Rankoshimachi, Japan

Rankoshimachi experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 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 Rankoshimachi UV Index data.

Average daily maximum UV levels by month for Rankoshimachi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)236791010108532