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Monthly climate in Oketo, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Oketo features a humid continental climate (Dfb). Temperatures typically range between -9 °C (16 °F) and 19 °C (66 °F) through the year, but rarely can drop to -26 °C (-15 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 1167 mm (45.9 inches) and receives 160 rainy days on the 1 mm (0.04 inches) threshold annually. Oketo enjoys an average of 2937 hours of sunshine throughout the year, and daylight varies from 8 hours 58 minutes to 15 hours 22 minutes per day.

Monthly average temperatures in Oketo, Japan

The warmest months in Oketo are July, August and September, with daily mean temperatures ranging from 15 to 19 °C (59 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -9 to -5 °C (16 - 23 °F) throughout the day. On average each year, Oketo experiences 19 days above 25 °C (77.0 °F) and 155 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Oketo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum4°C
(40°F)		8°C
(47°F)		15°C
(58°F)		22°C
(72°F)		35°C
(95°F)		28°C
(83°F)		32°C
(89°F)		31°C
(88°F)		28°C
(83°F)		23°C
(73°F)		17°C
(62°F)		11°C
(53°F)
Mean maximum2°C
(36°F)		5°C
(40°F)		10°C
(51°F)		19°C
(66°F)		27°C
(80°F)		24°C
(76°F)		30°C
(86°F)		30°C
(86°F)		26°C
(79°F)		20°C
(68°F)		14°C
(58°F)		7°C
(45°F)
Average high-5°C
(24°F)		-4°C
(26°F)		2°C
(36°F)		9°C
(48°F)		16°C
(60°F)		18°C
(64°F)		22°C
(73°F)		22°C
(72°F)		19°C
(67°F)		13°C
(56°F)		6°C
(43°F)		-2°C
(29°F)
Daily mean-9°C
(16°F)		-8°C
(18°F)		-2°C
(29°F)		4°C
(39°F)		11°C
(52°F)		14°C
(57°F)		19°C
(66°F)		18°C
(65°F)		15°C
(59°F)		9°C
(48°F)		2°C
(36°F)		-5°C
(23°F)
Average low-14°C
(8°F)		-13°C
(9°F)		-7°C
(20°F)		-1°C
(31°F)		6°C
(43°F)		10°C
(50°F)		15°C
(59°F)		15°C
(59°F)		11°C
(51°F)		4°C
(40°F)		-2°C
(29°F)		-9°C
(16°F)
Mean minimum-21°C
(-6°F)		-22°C
(-7°F)		-15°C
(4°F)		-8°C
(18°F)		-0°C
(32°F)		4°C
(39°F)		11°C
(51°F)		9°C
(49°F)		3°C
(38°F)		-2°C
(28°F)		-10°C
(14°F)		-18°C
(0°F)
Minimum-24°C
(-11°F)		-26°C
(-15°F)		-18°C
(0°F)		-10°C
(14°F)		-1°C
(30°F)		1°C
(33°F)		6°C
(43°F)		7°C
(44°F)		1°C
(34°F)		-3°C
(27°F)		-15°C
(5°F)		-19°C
(-2°F)

Compare climate in Oketo with other places

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

Monthly average precipitation in Oketo, Japan

Oketo usually has the most precipitation in June, August and October, with an average of 14 rainy days and 138 mm (5.4 inches) of precipitation per month. The driest months in Oketo are January, February and December. On average, 60 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Oketo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)59 (2.3)62 (2.4)88 (3.5)75 (3.0)99 (3.9)123 (4.8)122 (4.8)167 (6.6)101 (4.0)123 (4.9)89 (3.5)60 (2.3)
Average precipitation days (≥ 1 mm)101413141415141513121412

Monthly sunshine hours in Oketo, Japan

The sunniest months in Oketo are April, May and July, when the sun shines an average of 9 hours 29 minutes a day. Least sunny months in Oketo: January, November and December receive an average of 6 hours 11 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Oketo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours164210254283297280291264252233197206
Mean daily daylight hours9h 19m10h 28m11h 56m13h 26m14h 43m15h 22m15h 2m13h 54m12h 28m10h 59m9h 39m8h 58m

Solar UV radiation in Oketo, Japan

Oketo 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 Oketo UV Index data.

Average daily maximum UV levels by month for Oketo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2368891098532