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Monthly climate in Usuki, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Usuki features a humid subtropical climate (Cfa). Temperatures typically range between 7 °C (44 °F) and 28 °C (83 °F) through the year, but rarely can drop to -3 °C (26 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 1854 mm (73.0 inches) and receives 132 rainy days on the 1 mm (0.04 inches) threshold annually. Usuki enjoys an average of 3021 hours of sunshine throughout the year, and daylight varies from 9 hours 59 minutes to 14 hours 17 minutes per day.

Monthly average temperatures in Usuki, Japan

The warmest months in Usuki are July, August and September, with daily mean temperatures ranging from 25 to 28 °C (77 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 8 °C (44 - 47 °F) throughout the day. On average each year, Usuki experiences 113 days above 25 °C (77.0 °F) and 9 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Usuki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum19°C
(67°F)		23°C
(74°F)		26°C
(79°F)		28°C
(82°F)		31°C
(89°F)		35°C
(95°F)		35°C
(95°F)		37°C
(99°F)		35°C
(95°F)		31°C
(88°F)		25°C
(78°F)		23°C
(74°F)
Mean maximum17°C
(63°F)		19°C
(66°F)		23°C
(74°F)		26°C
(78°F)		30°C
(86°F)		31°C
(88°F)		34°C
(94°F)		35°C
(96°F)		33°C
(92°F)		30°C
(86°F)		23°C
(74°F)		19°C
(66°F)
Average high11°C
(52°F)		12°C
(54°F)		16°C
(62°F)		20°C
(69°F)		24°C
(76°F)		27°C
(80°F)		30°C
(86°F)		32°C
(89°F)		28°C
(83°F)		24°C
(75°F)		18°C
(65°F)		13°C
(55°F)
Daily mean7°C
(44°F)		7°C
(46°F)		11°C
(53°F)		15°C
(60°F)		20°C
(68°F)		23°C
(74°F)		27°C
(81°F)		28°C
(83°F)		25°C
(77°F)		20°C
(67°F)		14°C
(57°F)		8°C
(47°F)
Average low3°C
(37°F)		3°C
(38°F)		7°C
(45°F)		11°C
(51°F)		16°C
(60°F)		20°C
(68°F)		24°C
(76°F)		25°C
(77°F)		22°C
(71°F)		16°C
(61°F)		9°C
(49°F)		5°C
(40°F)
Mean minimum-1°C
(30°F)		-1°C
(30°F)		1°C
(34°F)		4°C
(39°F)		9°C
(49°F)		15°C
(60°F)		22°C
(71°F)		22°C
(72°F)		16°C
(61°F)		10°C
(50°F)		4°C
(39°F)		0°C
(33°F)
Minimum-3°C
(27°F)		-3°C
(26°F)		0°C
(33°F)		2°C
(37°F)		7°C
(45°F)		13°C
(56°F)		20°C
(69°F)		21°C
(69°F)		14°C
(57°F)		8°C
(46°F)		2°C
(36°F)		-1°C
(31°F)

Compare climate in Usuki with other places

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

Monthly average precipitation in Usuki, Japan

Usuki usually has the most precipitation in July, September and October, with an average of 16 rainy days and 270 mm (10.6 inches) of precipitation per month. The driest months in Usuki are January, November and December. On average, 53 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Usuki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)56 (2.2)75 (2.9)116 (4.6)110 (4.3)149 (5.9)207 (8.2)336 (13.2)228 (9.0)240 (9.5)233 (9.2)51 (2.0)52 (2.0)
Average precipitation days (≥ 1 mm)3811811142117171066

Monthly sunshine hours in Usuki, Japan

The sunniest months in Usuki are April, May and August, when the sun shines an average of 9 hours 22 minutes a day. Least sunny months in Usuki: January, February and December receive an average of 6 hours 56 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Usuki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours180230264279286258266296253249234220
Mean daily daylight hours10h 13m10h 59m11h 58m12h 59m13h 51m14h 17m14h 4m13h 19m12h 21m11h 19m10h 26m9h 59m

Solar UV radiation in Usuki, Japan

Usuki experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure. January, February and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Usuki UV Index data.

Average daily maximum UV levels by month for Usuki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)469111211121211764