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Monthly climate in Konan, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Konan features a humid subtropical climate (Cfa). Temperatures typically range between 8 °C (46 °F) and 27 °C (82 °F) through the year, but rarely can drop to -1 °C (30 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 2412 mm (95.0 inches) and receives 139 rainy days on the 1 mm (0.04 inches) threshold annually. Konan enjoys an average of 3173 hours of sunshine throughout the year, and daylight varies from 9 hours 57 minutes to 14 hours 19 minutes per day.

Monthly average temperatures in Konan, Japan

The warmest months in Konan are July, August and September, with daily mean temperatures ranging from 25 to 27 °C (77 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 10 °C (46 - 50 °F) throughout the day. On average each year, Konan experiences 92 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Konan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(65°F)		20°C
(68°F)		22°C
(72°F)		24°C
(76°F)		26°C
(80°F)		28°C
(84°F)		33°C
(92°F)		34°C
(94°F)		32°C
(89°F)		29°C
(85°F)		24°C
(75°F)		21°C
(70°F)
Mean maximum16°C
(60°F)		17°C
(63°F)		21°C
(70°F)		23°C
(73°F)		26°C
(79°F)		27°C
(81°F)		32°C
(89°F)		33°C
(91°F)		31°C
(87°F)		28°C
(83°F)		23°C
(73°F)		18°C
(65°F)
Average high11°C
(52°F)		12°C
(53°F)		15°C
(60°F)		19°C
(66°F)		22°C
(72°F)		25°C
(77°F)		28°C
(82°F)		30°C
(86°F)		27°C
(81°F)		23°C
(74°F)		18°C
(65°F)		13°C
(56°F)
Daily mean8°C
(46°F)		8°C
(47°F)		12°C
(54°F)		15°C
(60°F)		19°C
(67°F)		22°C
(73°F)		26°C
(79°F)		27°C
(82°F)		25°C
(77°F)		20°C
(69°F)		15°C
(59°F)		10°C
(50°F)
Average low5°C
(41°F)		5°C
(41°F)		8°C
(47°F)		12°C
(54°F)		16°C
(62°F)		20°C
(69°F)		24°C
(76°F)		26°C
(78°F)		23°C
(74°F)		18°C
(65°F)		12°C
(54°F)		7°C
(45°F)
Mean minimum1°C
(34°F)		1°C
(34°F)		4°C
(39°F)		6°C
(42°F)		11°C
(52°F)		17°C
(63°F)		22°C
(72°F)		23°C
(74°F)		19°C
(66°F)		12°C
(54°F)		7°C
(44°F)		3°C
(38°F)
Minimum-1°C
(30°F)		-1°C
(31°F)		3°C
(37°F)		4°C
(39°F)		9°C
(49°F)		16°C
(61°F)		21°C
(71°F)		22°C
(71°F)		16°C
(61°F)		11°C
(52°F)		5°C
(42°F)		2°C
(36°F)

Compare climate in Konan with other places

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

Monthly average precipitation in Konan, Japan

Konan usually has the most precipitation in June, July and August, with an average of 18 rainy days and 369 mm (14.5 inches) of precipitation per month. The driest months in Konan are January, November and December. On average, 61 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Konan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)54 (2.1)86 (3.4)147 (5.8)170 (6.7)206 (8.1)286 (11.3)523 (20.6)298 (11.7)262 (10.3)251 (9.9)63 (2.5)67 (2.7)
Average precipitation days (≥ 1 mm)4711910152219181266

Monthly sunshine hours in Konan, Japan

The sunniest months in Konan are May, July and August, when the sun shines an average of 9 hours 42 minutes a day. Least sunny months in Konan: January, February and December receive an average of 7 hours 17 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Konan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours194238274287298280291313266256242230
Mean daily daylight hours10h 11m10h 57m11h 58m13h 0m13h 53m14h 19m14h 6m13h 20m12h 21m11h 19m10h 25m9h 57m

Solar UV radiation in Konan, Japan

Konan experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 12 - 12, which corresponds to the Extreme category of sun exposure. January, February and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Konan UV Index data.

Average daily maximum UV levels by month for Konan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)469111112121210764