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Monthly climate in Imabari-shi, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Imabari-shi features a humid subtropical climate (Cfa). Temperatures typically range between 6 °C (42 °F) and 27 °C (81 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 32 °C (89 °F). The average annual precipitation amounts to about 1877 mm (73.9 inches) and receives 142 rainy days on the 1 mm (0.04 inches) threshold annually. Imabari-shi enjoys an average of 3160 hours of sunshine throughout the year, and daylight varies from 9 hours 54 minutes to 14 hours 22 minutes per day.

Monthly average temperatures in Imabari-shi, Japan

The warmest months in Imabari-shi are July, August and September, with daily mean temperatures ranging from 24 to 27 °C (75 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 8 °C (42 - 47 °F) throughout the day. On average each year, Imabari-shi experiences 72 days above 25 °C (77.0 °F) and 5 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Imabari-shi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(58°F)		17°C
(62°F)		18°C
(65°F)		22°C
(72°F)		26°C
(78°F)		28°C
(82°F)		31°C
(88°F)		32°C
(89°F)		31°C
(88°F)		28°C
(83°F)		23°C
(73°F)		20°C
(69°F)
Mean maximum12°C
(54°F)		13°C
(56°F)		17°C
(63°F)		21°C
(69°F)		25°C
(77°F)		26°C
(79°F)		30°C
(86°F)		31°C
(89°F)		30°C
(86°F)		27°C
(80°F)		21°C
(69°F)		16°C
(61°F)
Average high8°C
(47°F)		8°C
(47°F)		12°C
(55°F)		16°C
(61°F)		20°C
(69°F)		23°C
(75°F)		27°C
(81°F)		29°C
(85°F)		26°C
(79°F)		21°C
(70°F)		16°C
(61°F)		10°C
(51°F)
Daily mean6°C
(42°F)		6°C
(43°F)		10°C
(49°F)		13°C
(56°F)		18°C
(64°F)		21°C
(70°F)		25°C
(78°F)		27°C
(81°F)		24°C
(75°F)		19°C
(66°F)		13°C
(56°F)		8°C
(47°F)
Average low3°C
(39°F)		3°C
(38°F)		7°C
(44°F)		10°C
(51°F)		15°C
(59°F)		19°C
(66°F)		23°C
(74°F)		25°C
(77°F)		22°C
(71°F)		17°C
(62°F)		11°C
(51°F)		6°C
(43°F)
Mean minimum-0°C
(32°F)		-1°C
(31°F)		2°C
(36°F)		5°C
(41°F)		10°C
(51°F)		16°C
(61°F)		21°C
(70°F)		22°C
(72°F)		17°C
(64°F)		11°C
(53°F)		6°C
(42°F)		1°C
(35°F)
Minimum-3°C
(27°F)		-2°C
(29°F)		1°C
(34°F)		4°C
(39°F)		9°C
(48°F)		15°C
(59°F)		20°C
(67°F)		20°C
(68°F)		17°C
(63°F)		10°C
(51°F)		4°C
(40°F)		0°C
(33°F)

Compare climate in Imabari-shi with other places

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

Monthly average precipitation in Imabari-shi, Japan

Imabari-shi usually has the most precipitation in July, September and October, with an average of 15 rainy days and 271 mm (10.7 inches) of precipitation per month. The driest months in Imabari-shi are January, November and December. On average, 64 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Imabari-shi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)58 (2.3)82 (3.2)126 (5.0)137 (5.4)149 (5.8)195 (7.7)360 (14.2)181 (7.1)222 (8.7)232 (9.2)62 (2.4)73 (2.9)
Average precipitation days (≥ 1 mm)910129111519131511810

Monthly sunshine hours in Imabari-shi, Japan

The sunniest months in Imabari-shi are May, June and August, when the sun shines an average of 9 hours 50 minutes a day. Least sunny months in Imabari-shi: January, February and December receive an average of 7 hours 7 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Imabari-shi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours189233271285304287286312265256241225
Mean daily daylight hours10h 8m10h 56m11h 58m13h 1m13h 55m14h 22m14h 8m13h 22m12h 21m11h 18m10h 23m9h 54m

Solar UV radiation in Imabari-shi, Japan

Imabari-shi experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 11 - 12, 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 Imabari-shi UV Index data.

Average daily maximum UV levels by month for Imabari-shi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)458101111121210764