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Monthly climate in Ibusuki, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Ibusuki features a humid subtropical climate (Cfa). Temperatures typically range between 10 °C (50 °F) and 28 °C (83 °F) through the year, but rarely can drop to -1 °C (31 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 2442 mm (96.1 inches) and receives 156 rainy days on the 1 mm (0.04 inches) threshold annually. Ibusuki enjoys an average of 3101 hours of sunshine throughout the year, and daylight varies from 10 hours 8 minutes to 14 hours 7 minutes per day.

Monthly average temperatures in Ibusuki, Japan

The warmest months in Ibusuki are July, August and September, with daily mean temperatures ranging from 26 to 28 °C (79 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 12 °C (50 - 53 °F) throughout the day. On average each year, Ibusuki experiences 112 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ibusuki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum21°C
(70°F)		21°C
(71°F)		23°C
(74°F)		26°C
(79°F)		28°C
(83°F)		30°C
(86°F)		33°C
(91°F)		34°C
(93°F)		32°C
(89°F)		30°C
(86°F)		26°C
(80°F)		24°C
(75°F)
Mean maximum19°C
(66°F)		19°C
(66°F)		22°C
(72°F)		24°C
(76°F)		27°C
(81°F)		28°C
(83°F)		32°C
(90°F)		33°C
(91°F)		31°C
(88°F)		29°C
(84°F)		24°C
(76°F)		20°C
(69°F)
Average high13°C
(55°F)		14°C
(57°F)		17°C
(63°F)		20°C
(69°F)		24°C
(75°F)		26°C
(79°F)		29°C
(85°F)		30°C
(87°F)		28°C
(83°F)		25°C
(77°F)		20°C
(68°F)		15°C
(59°F)
Daily mean10°C
(50°F)		10°C
(51°F)		14°C
(57°F)		17°C
(63°F)		21°C
(69°F)		23°C
(74°F)		27°C
(81°F)		28°C
(83°F)		26°C
(79°F)		22°C
(72°F)		17°C
(62°F)		12°C
(53°F)
Average low7°C
(45°F)		7°C
(45°F)		11°C
(52°F)		14°C
(57°F)		18°C
(64°F)		21°C
(71°F)		25°C
(78°F)		26°C
(79°F)		24°C
(75°F)		19°C
(67°F)		14°C
(57°F)		9°C
(48°F)
Mean minimum1°C
(34°F)		2°C
(37°F)		5°C
(42°F)		9°C
(48°F)		13°C
(55°F)		18°C
(65°F)		23°C
(73°F)		24°C
(76°F)		20°C
(69°F)		14°C
(57°F)		8°C
(46°F)		3°C
(37°F)
Minimum-1°C
(31°F)		1°C
(33°F)		3°C
(39°F)		7°C
(45°F)		10°C
(50°F)		17°C
(62°F)		20°C
(68°F)		24°C
(75°F)		19°C
(66°F)		13°C
(55°F)		6°C
(44°F)		1°C
(34°F)

Compare climate in Ibusuki with other places

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

Monthly average precipitation in Ibusuki, Japan

Ibusuki usually has the most precipitation in June, July and September, with an average of 20 rainy days and 370 mm (14.6 inches) of precipitation per month. The driest months in Ibusuki are January, November and December. On average, 86 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ibusuki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)57 (2.3)110 (4.3)188 (7.4)148 (5.8)262 (10.3)455 (17.9)391 (15.4)217 (8.6)265 (10.5)148 (5.8)108 (4.3)92 (3.6)
Average precipitation days (≥ 1 mm)61013912192317191198

Monthly sunshine hours in Ibusuki, Japan

The sunniest months in Ibusuki are April, July and August, when the sun shines an average of 9 hours 39 minutes a day. Least sunny months in Ibusuki: January, February and December receive an average of 7 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ibusuki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours188228263284278247287315275261243225
Mean daily daylight hours10h 21m11h 3m11h 59m12h 56m13h 43m14h 7m13h 55m13h 14m12h 19m11h 23m10h 33m10h 8m

Solar UV radiation in Ibusuki, Japan

Ibusuki experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 12 - 13, 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 7. For more detailed information, check out our hourly Ibusuki UV Index data.

Average daily maximum UV levels by month for Ibusuki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)5710111212121311875