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Monthly climate in Ibara, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Ibara features a humid subtropical climate (Cfa). Temperatures typically range between 6 °C (44 °F) and 29 °C (85 °F) through the year, but rarely can drop to -3 °C (28 °F) or can rise to as high as 37 °C (98 °F). The average annual precipitation amounts to about 1441 mm (56.7 inches) and receives 106 rainy days on the 1 mm (0.04 inches) threshold annually. Ibara enjoys an average of 3073 hours of sunshine throughout the year, and daylight varies from 9 hours 52 minutes to 14 hours 24 minutes per day.

Monthly average temperatures in Ibara, Japan

The warmest months in Ibara are July, August and September, with daily mean temperatures ranging from 25 to 29 °C (77 - 85 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 9 °C (44 - 48 °F) throughout the day. On average each year, Ibara experiences 107 days above 25 °C (77.0 °F) and 4 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ibara. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum15°C
(59°F)		19°C
(67°F)		22°C
(71°F)		25°C
(76°F)		30°C
(87°F)		31°C
(88°F)		37°C
(98°F)		36°C
(97°F)		35°C
(95°F)		31°C
(88°F)		23°C
(74°F)		20°C
(69°F)
Mean maximum14°C
(58°F)		15°C
(60°F)		20°C
(69°F)		23°C
(74°F)		28°C
(83°F)		30°C
(85°F)		33°C
(93°F)		35°C
(96°F)		33°C
(92°F)		29°C
(84°F)		22°C
(73°F)		17°C
(64°F)
Average high10°C
(50°F)		10°C
(51°F)		14°C
(58°F)		19°C
(66°F)		23°C
(74°F)		26°C
(79°F)		29°C
(85°F)		32°C
(90°F)		28°C
(83°F)		23°C
(74°F)		18°C
(64°F)		12°C
(54°F)
Daily mean6°C
(44°F)		7°C
(44°F)		11°C
(51°F)		15°C
(59°F)		20°C
(68°F)		23°C
(74°F)		27°C
(81°F)		29°C
(85°F)		25°C
(77°F)		20°C
(68°F)		14°C
(57°F)		9°C
(48°F)
Average low3°C
(38°F)		3°C
(38°F)		7°C
(44°F)		11°C
(51°F)		16°C
(61°F)		20°C
(68°F)		25°C
(76°F)		26°C
(79°F)		22°C
(72°F)		17°C
(62°F)		10°C
(50°F)		5°C
(42°F)
Mean minimum-1°C
(31°F)		-0°C
(32°F)		2°C
(35°F)		4°C
(40°F)		10°C
(49°F)		16°C
(61°F)		21°C
(71°F)		23°C
(73°F)		17°C
(62°F)		10°C
(51°F)		4°C
(39°F)		2°C
(35°F)
Minimum-3°C
(28°F)		-2°C
(29°F)		1°C
(34°F)		3°C
(38°F)		8°C
(47°F)		14°C
(57°F)		20°C
(68°F)		20°C
(69°F)		15°C
(60°F)		9°C
(49°F)		3°C
(38°F)		1°C
(34°F)

Compare climate in Ibara with other places

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

Monthly average precipitation in Ibara, Japan

Ibara usually has the most precipitation in July, September and October, with an average of 12 rainy days and 215 mm (8.5 inches) of precipitation per month. The driest months in Ibara are January, November and December. On average, 39 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ibara. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)38 (1.5)53 (2.1)93 (3.7)122 (4.8)112 (4.4)147 (5.8)291 (11.4)152 (6.0)180 (7.1)173 (6.8)32 (1.3)45 (1.8)
Average precipitation days (≥ 1 mm)45999111711111046

Monthly sunshine hours in Ibara, Japan

The sunniest months in Ibara are May, June and August, when the sun shines an average of 9 hours 39 minutes a day. Least sunny months in Ibara: January, February and December receive an average of 6 hours 52 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ibara. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours180230265282298284279305254243234215
Mean daily daylight hours10h 6m10h 55m11h 58m13h 3m13h 57m14h 24m14h 11m13h 23m12h 21m11h 17m10h 21m9h 52m

Solar UV radiation in Ibara, Japan

Ibara 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 Ibara UV Index data.

Average daily maximum UV levels by month for Ibara. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)458101111121210754