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Monthly climate in Ichinoseki, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Ichinoseki features a humid subtropical climate (Cfa). Temperatures typically range between 1 °C (33 °F) and 24 °C (76 °F) through the year, but rarely can drop to -17 °C (3 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 1236 mm (48.7 inches) and receives 152 rainy days on the 1 mm (0.04 inches) threshold annually. Ichinoseki enjoys an average of 2821 hours of sunshine throughout the year, and daylight varies from 9 hours 28 minutes to 14 hours 50 minutes per day.

Monthly average temperatures in Ichinoseki, Japan

The warmest months in Ichinoseki are July, August and September, with daily mean temperatures ranging from 20 to 24 °C (69 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 2 °C (33 - 37 °F) throughout the day. On average each year, Ichinoseki experiences 61 days above 25 °C (77.0 °F) and 82 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ichinoseki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum10°C
(50°F)		14°C
(57°F)		22°C
(71°F)		26°C
(80°F)		31°C
(88°F)		32°C
(90°F)		34°C
(93°F)		35°C
(95°F)		34°C
(94°F)		28°C
(83°F)		20°C
(69°F)		15°C
(60°F)
Mean maximum9°C
(48°F)		11°C
(53°F)		18°C
(65°F)		22°C
(73°F)		28°C
(83°F)		28°C
(83°F)		32°C
(90°F)		34°C
(93°F)		31°C
(87°F)		26°C
(78°F)		19°C
(67°F)		13°C
(55°F)
Average high4°C
(39°F)		5°C
(41°F)		10°C
(50°F)		15°C
(59°F)		21°C
(69°F)		23°C
(74°F)		27°C
(80°F)		28°C
(83°F)		24°C
(76°F)		19°C
(66°F)		13°C
(55°F)		6°C
(43°F)
Daily mean1°C
(33°F)		1°C
(35°F)		5°C
(42°F)		10°C
(50°F)		16°C
(61°F)		19°C
(67°F)		23°C
(74°F)		24°C
(76°F)		20°C
(69°F)		15°C
(58°F)		8°C
(47°F)		2°C
(37°F)
Average low-2°C
(28°F)		-2°C
(29°F)		1°C
(34°F)		5°C
(41°F)		11°C
(52°F)		15°C
(60°F)		20°C
(68°F)		21°C
(71°F)		17°C
(63°F)		10°C
(51°F)		4°C
(39°F)		-1°C
(31°F)
Mean minimum-8°C
(17°F)		-6°C
(21°F)		-3°C
(27°F)		-1°C
(30°F)		5°C
(42°F)		11°C
(53°F)		16°C
(61°F)		16°C
(61°F)		10°C
(51°F)		4°C
(40°F)		-2°C
(28°F)		-5°C
(24°F)
Minimum-17°C
(3°F)		-12°C
(11°F)		-5°C
(24°F)		-3°C
(26°F)		4°C
(40°F)		9°C
(48°F)		15°C
(59°F)		12°C
(54°F)		6°C
(43°F)		2°C
(36°F)		-4°C
(26°F)		-8°C
(19°F)

Compare climate in Ichinoseki with other places

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

Monthly average precipitation in Ichinoseki, Japan

Ichinoseki usually has the most precipitation in July, August and October, with an average of 15 rainy days and 163 mm (6.4 inches) of precipitation per month. The driest months in Ichinoseki are January, February and November. On average, 50 mm (2.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ichinoseki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)47 (1.9)53 (2.1)102 (4.0)106 (4.2)100 (3.9)105 (4.1)167 (6.6)162 (6.4)120 (4.7)160 (6.3)49 (1.9)65 (2.6)
Average precipitation days (≥ 1 mm)11101214111317171312814

Monthly sunshine hours in Ichinoseki, Japan

The sunniest months in Ichinoseki are April, May and June, when the sun shines an average of 9 hours 2 minutes a day. Least sunny months in Ichinoseki: January, October and December receive an average of 6 hours 8 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ichinoseki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours164217255262289270250251239207213199
Mean daily daylight hours9h 45m10h 43m11h 57m13h 13m14h 17m14h 50m14h 33m13h 37m12h 24m11h 9m10h 2m9h 28m

Solar UV radiation in Ichinoseki, Japan

Ichinoseki 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 Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Ichinoseki UV Index data.

Average daily maximum UV levels by month for Ichinoseki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)346891010109643