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Monthly climate in Kiryu, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Kiryu features a humid subtropical climate (Cfa). Temperatures typically range between 2 °C (35 °F) and 25 °C (77 °F) through the year, but rarely can drop to -10 °C (14 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 1590 mm (62.6 inches) and receives 171 rainy days on the 1 mm (0.04 inches) threshold annually. Kiryu enjoys an average of 2908 hours of sunshine throughout the year, and daylight varies from 9 hours 42 minutes to 14 hours 35 minutes per day.

Monthly average temperatures in Kiryu, Japan

The warmest months in Kiryu are July, August and September, with daily mean temperatures ranging from 21 to 25 °C (69 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 4 °C (35 - 39 °F) throughout the day. On average each year, Kiryu experiences 63 days above 25 °C (77.0 °F) and 65 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Kiryu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(56°F)		19°C
(66°F)		22°C
(73°F)		27°C
(80°F)		31°C
(87°F)		30°C
(87°F)		34°C
(94°F)		35°C
(95°F)		32°C
(89°F)		30°C
(85°F)		21°C
(70°F)		18°C
(64°F)
Mean maximum11°C
(52°F)		15°C
(59°F)		20°C
(67°F)		24°C
(75°F)		29°C
(84°F)		27°C
(81°F)		32°C
(89°F)		33°C
(92°F)		30°C
(86°F)		26°C
(80°F)		19°C
(67°F)		15°C
(58°F)
Average high6°C
(42°F)		7°C
(45°F)		11°C
(53°F)		16°C
(61°F)		21°C
(70°F)		23°C
(74°F)		27°C
(80°F)		29°C
(84°F)		24°C
(75°F)		19°C
(66°F)		14°C
(57°F)		8°C
(47°F)
Daily mean2°C
(35°F)		2°C
(37°F)		7°C
(44°F)		11°C
(52°F)		17°C
(62°F)		20°C
(68°F)		23°C
(74°F)		25°C
(77°F)		21°C
(69°F)		15°C
(60°F)		9°C
(49°F)		4°C
(39°F)
Average low-2°C
(29°F)		-2°C
(30°F)		2°C
(36°F)		6°C
(44°F)		12°C
(53°F)		16°C
(61°F)		20°C
(69°F)		22°C
(72°F)		18°C
(64°F)		12°C
(54°F)		5°C
(42°F)		0°C
(33°F)
Mean minimum-6°C
(21°F)		-6°C
(21°F)		-3°C
(27°F)		0°C
(32°F)		5°C
(41°F)		12°C
(53°F)		17°C
(63°F)		17°C
(63°F)		13°C
(55°F)		6°C
(43°F)		-1°C
(30°F)		-4°C
(26°F)
Minimum-10°C
(14°F)		-9°C
(15°F)		-6°C
(21°F)		-1°C
(30°F)		3°C
(37°F)		9°C
(49°F)		16°C
(61°F)		13°C
(55°F)		10°C
(49°F)		4°C
(39°F)		-2°C
(28°F)		-7°C
(20°F)

Compare climate in Kiryu with other places

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

Monthly average precipitation in Kiryu, Japan

Kiryu usually has the most precipitation in July, September and October, with an average of 20 rainy days and 232 mm (9.1 inches) of precipitation per month. The driest months in Kiryu are January, February and November. On average, 44 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kiryu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)45 (1.8)43 (1.7)115 (4.5)123 (4.9)130 (5.1)166 (6.5)262 (10.3)179 (7.1)184 (7.2)251 (9.9)43 (1.7)49 (1.9)
Average precipitation days (≥ 1 mm)98111115182523201768

Monthly sunshine hours in Kiryu, Japan

The sunniest months in Kiryu are April, May and August, when the sun shines an average of 9 hours 1 minutes a day. Least sunny months in Kiryu: January, September and October receive an average of 6 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kiryu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours190236262277280263231271225207230229
Mean daily daylight hours9h 58m10h 50m11h 57m13h 7m14h 5m14h 35m14h 20m13h 29m12h 23m11h 14m10h 13m9h 42m

Solar UV radiation in Kiryu, Japan

Kiryu experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 11, which corresponds to the 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 Kiryu UV Index data.

Average daily maximum UV levels by month for Kiryu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3589101111119753