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Monthly climate in Tarumizu, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Tarumizu features a humid subtropical climate (Cfa). Temperatures typically range between 8 °C (47 °F) and 28 °C (83 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 2340 mm (92.1 inches) and receives 156 rainy days on the 1 mm (0.04 inches) threshold annually. Tarumizu enjoys an average of 3116 hours of sunshine throughout the year, and daylight varies from 10 hours 7 minutes to 14 hours 8 minutes per day.

Monthly average temperatures in Tarumizu, Japan

The warmest months in Tarumizu are July, August and September, with daily mean temperatures ranging from 26 to 28 °C (78 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 10 °C (47 - 50 °F) throughout the day. On average each year, Tarumizu experiences 119 days above 25 °C (77.0 °F) and 3 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Tarumizu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum20°C
(69°F)		22°C
(71°F)		24°C
(75°F)		27°C
(82°F)		30°C
(87°F)		31°C
(88°F)		34°C
(93°F)		35°C
(96°F)		33°C
(91°F)		31°C
(87°F)		26°C
(79°F)		24°C
(76°F)
Mean maximum18°C
(65°F)		19°C
(66°F)		23°C
(73°F)		25°C
(78°F)		28°C
(84°F)		30°C
(86°F)		33°C
(92°F)		34°C
(93°F)		32°C
(90°F)		29°C
(85°F)		24°C
(76°F)		20°C
(68°F)
Average high12°C
(55°F)		13°C
(56°F)		17°C
(63°F)		21°C
(70°F)		24°C
(76°F)		26°C
(80°F)		30°C
(86°F)		31°C
(89°F)		29°C
(84°F)		25°C
(77°F)		20°C
(67°F)		14°C
(57°F)
Daily mean8°C
(47°F)		9°C
(49°F)		13°C
(56°F)		17°C
(62°F)		20°C
(69°F)		23°C
(74°F)		27°C
(81°F)		28°C
(83°F)		26°C
(78°F)		21°C
(71°F)		15°C
(60°F)		10°C
(50°F)
Average low5°C
(41°F)		5°C
(42°F)		9°C
(48°F)		12°C
(55°F)		17°C
(62°F)		21°C
(69°F)		25°C
(77°F)		26°C
(78°F)		23°C
(74°F)		18°C
(65°F)		12°C
(53°F)		7°C
(44°F)
Mean minimum-1°C
(31°F)		0°C
(33°F)		3°C
(38°F)		7°C
(44°F)		11°C
(52°F)		17°C
(63°F)		22°C
(72°F)		23°C
(74°F)		19°C
(66°F)		12°C
(53°F)		6°C
(42°F)		1°C
(34°F)
Minimum-3°C
(27°F)		-1°C
(30°F)		2°C
(36°F)		5°C
(42°F)		8°C
(47°F)		15°C
(59°F)		19°C
(66°F)		22°C
(72°F)		17°C
(63°F)		10°C
(51°F)		3°C
(38°F)		-0°C
(32°F)

Compare climate in Tarumizu with other places

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

Monthly average precipitation in Tarumizu, Japan

Tarumizu usually has the most precipitation in June, July and September, with an average of 20 rainy days and 361 mm (14.2 inches) of precipitation per month. The driest months in Tarumizu are January, November and December. On average, 76 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tarumizu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)53 (2.1)102 (4.0)174 (6.8)146 (5.8)258 (10.2)425 (16.7)400 (15.8)206 (8.1)258 (10.2)143 (5.6)94 (3.7)80 (3.2)
Average precipitation days (≥ 1 mm)61013912192419191087

Monthly sunshine hours in Tarumizu, Japan

The sunniest months in Tarumizu are April, July and August, when the sun shines an average of 9 hours 33 minutes a day. Least sunny months in Tarumizu: January, February and December receive an average of 7 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tarumizu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours196234268288279248279311269262244232
Mean daily daylight hours10h 20m11h 3m11h 59m12h 56m13h 44m14h 8m13h 56m13h 14m12h 19m11h 22m10h 33m10h 7m

Solar UV radiation in Tarumizu, Japan

Tarumizu 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 6. For more detailed information, check out our hourly Tarumizu UV Index data.

Average daily maximum UV levels by month for Tarumizu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)5610101212121311865