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Monthly climate in Imaichi, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Imaichi 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 -12 °C (11 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 2237 mm (88.1 inches) and receives 204 rainy days on the 1 mm (0.04 inches) threshold annually. Imaichi enjoys an average of 2923 hours of sunshine throughout the year, and daylight varies from 9 hours 40 minutes to 14 hours 37 minutes per day.

Monthly average temperatures in Imaichi, Japan

The warmest months in Imaichi 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 1 to 3 °C (33 - 38 °F) throughout the day. On average each year, Imaichi experiences 55 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 Imaichi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(54°F)		18°C
(65°F)		21°C
(70°F)		26°C
(79°F)		30°C
(86°F)		30°C
(86°F)		33°C
(91°F)		33°C
(92°F)		31°C
(88°F)		27°C
(82°F)		20°C
(68°F)		17°C
(63°F)
Mean maximum10°C
(51°F)		13°C
(56°F)		18°C
(64°F)		23°C
(73°F)		28°C
(82°F)		26°C
(79°F)		31°C
(87°F)		32°C
(90°F)		29°C
(84°F)		25°C
(78°F)		19°C
(66°F)		13°C
(56°F)
Average high5°C
(40°F)		6°C
(43°F)		10°C
(51°F)		15°C
(59°F)		20°C
(69°F)		22°C
(73°F)		26°C
(79°F)		28°C
(83°F)		23°C
(74°F)		18°C
(65°F)		13°C
(56°F)		7°C
(45°F)
Daily mean1°C
(33°F)		1°C
(35°F)		6°C
(42°F)		10°C
(50°F)		16°C
(60°F)		19°C
(66°F)		23°C
(73°F)		24°C
(76°F)		20°C
(68°F)		14°C
(58°F)		9°C
(48°F)		3°C
(38°F)
Average low-3°C
(27°F)		-2°C
(28°F)		1°C
(34°F)		5°C
(42°F)		11°C
(52°F)		15°C
(59°F)		20°C
(68°F)		21°C
(70°F)		17°C
(63°F)		11°C
(52°F)		5°C
(40°F)		-0°C
(32°F)
Mean minimum-7°C
(20°F)		-7°C
(20°F)		-5°C
(23°F)		-1°C
(30°F)		4°C
(39°F)		11°C
(52°F)		16°C
(62°F)		16°C
(62°F)		11°C
(53°F)		5°C
(42°F)		-2°C
(30°F)		-4°C
(24°F)
Minimum-12°C
(11°F)		-10°C
(14°F)		-8°C
(17°F)		-4°C
(26°F)		2°C
(37°F)		9°C
(48°F)		15°C
(60°F)		12°C
(55°F)		8°C
(47°F)		3°C
(37°F)		-3°C
(27°F)		-6°C
(22°F)

Compare climate in Imaichi with other places

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

Monthly average precipitation in Imaichi, Japan

Imaichi usually has the most precipitation in July, August and October, with an average of 24 rainy days and 326 mm (12.8 inches) of precipitation per month. The driest months in Imaichi are January, February and December. On average, 57 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Imaichi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)52 (2.0)51 (2.0)154 (6.1)154 (6.1)197 (7.7)247 (9.7)374 (14.7)311 (12.2)269 (10.6)292 (11.5)70 (2.7)67 (2.6)
Average precipitation days (≥ 1 mm)991415192127262520811

Monthly sunshine hours in Imaichi, Japan

The sunniest months in Imaichi are April, May and August, when the sun shines an average of 9 hours 5 minutes a day. Least sunny months in Imaichi: January, October and December receive an average of 6 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Imaichi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours184232265277284270241274230209228224
Mean daily daylight hours9h 56m10h 49m11h 57m13h 7m14h 7m14h 37m14h 22m13h 30m12h 23m11h 13m10h 12m9h 40m

Solar UV radiation in Imaichi, Japan

Imaichi 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, November 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 Imaichi UV Index data.

Average daily maximum UV levels by month for Imaichi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)46891011111110753