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Monthly climate in Uki, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Uki features a humid subtropical climate (Cfa). Temperatures typically range between 5 °C (41 °F) and 26 °C (80 °F) through the year, but rarely can drop to -6 °C (22 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 2254 mm (88.7 inches) and receives 155 rainy days on the 1 mm (0.04 inches) threshold annually. Uki enjoys an average of 3066 hours of sunshine throughout the year, and daylight varies from 10 hours 1 minutes to 14 hours 14 minutes per day.

Monthly average temperatures in Uki, Japan

The warmest months in Uki are July, August and September, with daily mean temperatures ranging from 23 to 26 °C (74 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 7 °C (41 - 44 °F) throughout the day. On average each year, Uki experiences 89 days above 25 °C (77.0 °F) and 17 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Uki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(64°F)		18°C
(64°F)		23°C
(73°F)		25°C
(78°F)		28°C
(83°F)		30°C
(86°F)		33°C
(92°F)		34°C
(93°F)		32°C
(90°F)		30°C
(86°F)		23°C
(74°F)		21°C
(71°F)
Mean maximum14°C
(58°F)		16°C
(60°F)		20°C
(69°F)		23°C
(75°F)		27°C
(80°F)		28°C
(83°F)		32°C
(90°F)		33°C
(92°F)		31°C
(88°F)		27°C
(81°F)		22°C
(71°F)		17°C
(63°F)
Average high8°C
(48°F)		10°C
(50°F)		14°C
(58°F)		18°C
(65°F)		22°C
(73°F)		25°C
(77°F)		28°C
(83°F)		30°C
(86°F)		27°C
(80°F)		22°C
(73°F)		16°C
(62°F)		10°C
(51°F)
Daily mean5°C
(41°F)		6°C
(43°F)		10°C
(51°F)		14°C
(58°F)		19°C
(66°F)		22°C
(72°F)		25°C
(78°F)		26°C
(80°F)		23°C
(74°F)		18°C
(65°F)		12°C
(54°F)		7°C
(44°F)
Average low2°C
(36°F)		2°C
(37°F)		7°C
(44°F)		11°C
(51°F)		15°C
(60°F)		19°C
(66°F)		23°C
(74°F)		24°C
(75°F)		21°C
(70°F)		15°C
(59°F)		8°C
(47°F)		3°C
(38°F)
Mean minimum-3°C
(26°F)		-2°C
(28°F)		1°C
(35°F)		4°C
(39°F)		9°C
(49°F)		15°C
(60°F)		20°C
(69°F)		21°C
(71°F)		16°C
(61°F)		9°C
(48°F)		2°C
(36°F)		-1°C
(30°F)
Minimum-6°C
(22°F)		-5°C
(23°F)		0°C
(33°F)		3°C
(37°F)		7°C
(44°F)		13°C
(56°F)		17°C
(63°F)		20°C
(68°F)		13°C
(56°F)		7°C
(46°F)		1°C
(33°F)		-2°C
(28°F)

Compare climate in Uki with other places

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

Monthly average precipitation in Uki, Japan

Uki usually has the most precipitation in June, July and August, with an average of 18 rainy days and 340 mm (13.4 inches) of precipitation per month. The driest months in Uki are January, November and December. On average, 79 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Uki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)64 (2.5)112 (4.4)157 (6.2)150 (5.9)229 (9.0)339 (13.4)444 (17.5)238 (9.4)209 (8.2)140 (5.5)85 (3.4)87 (3.4)
Average precipitation days (≥ 1 mm)810141012182315171198

Monthly sunshine hours in Uki, Japan

The sunniest months in Uki are April, May and August, when the sun shines an average of 9 hours 23 minutes a day. Least sunny months in Uki: January, February and December receive an average of 7 hours 17 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Uki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours195237268285279249264299256258239230
Mean daily daylight hours10h 15m11h 0m11h 59m12h 59m13h 49m14h 14m14h 2m13h 17m12h 20m11h 20m10h 28m10h 1m

Solar UV radiation in Uki, Japan

Uki experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 12 - 13, 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 Uki UV Index data.

Average daily maximum UV levels by month for Uki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)569101212131311864