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Monthly climate in Izumizaki, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Izumizaki features a humid subtropical climate (Cfa). Temperatures typically range between 0 °C (32 °F) and 24 °C (76 °F) through the year, but rarely can drop to -10 °C (14 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 1432 mm (56.4 inches) and receives 160 rainy days on the 1 mm (0.04 inches) threshold annually. Izumizaki enjoys an average of 2933 hours of sunshine throughout the year, and daylight varies from 9 hours 38 minutes to 14 hours 39 minutes per day.

Monthly average temperatures in Izumizaki, Japan

The warmest months in Izumizaki are July, August and September, with daily mean temperatures ranging from 20 to 24 °C (68 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 2 °C (32 - 37 °F) throughout the day. On average each year, Izumizaki experiences 60 days above 25 °C (77.0 °F) and 87 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Izumizaki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum11°C
(52°F)		18°C
(64°F)		21°C
(70°F)		27°C
(81°F)		32°C
(90°F)		32°C
(89°F)		33°C
(92°F)		34°C
(94°F)		31°C
(88°F)		27°C
(81°F)		20°C
(68°F)		17°C
(64°F)
Mean maximum9°C
(48°F)		13°C
(55°F)		18°C
(65°F)		23°C
(73°F)		28°C
(84°F)		27°C
(81°F)		32°C
(90°F)		33°C
(92°F)		29°C
(84°F)		25°C
(77°F)		19°C
(66°F)		13°C
(55°F)
Average high3°C
(38°F)		5°C
(41°F)		10°C
(50°F)		15°C
(59°F)		20°C
(69°F)		23°C
(74°F)		27°C
(80°F)		28°C
(84°F)		23°C
(75°F)		18°C
(64°F)		13°C
(55°F)		6°C
(43°F)
Daily mean-0°C
(32°F)		1°C
(34°F)		5°C
(41°F)		10°C
(50°F)		16°C
(60°F)		19°C
(66°F)		23°C
(74°F)		24°C
(76°F)		20°C
(68°F)		14°C
(58°F)		8°C
(47°F)		2°C
(37°F)
Average low-3°C
(27°F)		-2°C
(28°F)		1°C
(34°F)		5°C
(41°F)		11°C
(51°F)		15°C
(59°F)		20°C
(68°F)		21°C
(71°F)		17°C
(62°F)		11°C
(52°F)		4°C
(40°F)		-1°C
(31°F)
Mean minimum-7°C
(19°F)		-7°C
(20°F)		-5°C
(24°F)		-2°C
(29°F)		3°C
(38°F)		11°C
(52°F)		16°C
(60°F)		16°C
(62°F)		11°C
(52°F)		5°C
(41°F)		-2°C
(29°F)		-5°C
(24°F)
Minimum-9°C
(15°F)		-10°C
(14°F)		-6°C
(21°F)		-3°C
(27°F)		2°C
(37°F)		8°C
(47°F)		14°C
(58°F)		12°C
(55°F)		9°C
(48°F)		2°C
(35°F)		-3°C
(27°F)		-6°C
(22°F)

Compare climate in Izumizaki with other places

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

Monthly average precipitation in Izumizaki, Japan

Izumizaki usually has the most precipitation in July, September and October, with an average of 16 rainy days and 207 mm (8.1 inches) of precipitation per month. The driest months in Izumizaki are January, February and November. On average, 49 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Izumizaki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)54 (2.1)47 (1.9)116 (4.6)106 (4.2)126 (4.9)128 (5.1)261 (10.3)126 (4.9)150 (5.9)209 (8.2)47 (1.8)62 (2.4)
Average precipitation days (≥ 1 mm)12111212131321171613812

Monthly sunshine hours in Izumizaki, Japan

The sunniest months in Izumizaki are April, May and August, when the sun shines an average of 9 hours 12 minutes a day. Least sunny months in Izumizaki: January, October and December receive an average of 6 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Izumizaki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours178228263276287274249283239209227215
Mean daily daylight hours9h 54m10h 48m11h 57m13h 9m14h 9m14h 39m14h 24m13h 31m12h 23m11h 12m10h 10m9h 38m

Solar UV radiation in Izumizaki, Japan

Izumizaki 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 Izumizaki UV Index data.

Average daily maximum UV levels by month for Izumizaki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3579101111119753