nomadseason

Monthly climate in Kamiiso, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Kamiiso features a humid continental climate (Dfb). Temperatures typically range between -1 °C (30 °F) and 21 °C (71 °F) through the year, but rarely can drop to -10 °C (15 °F) or can rise to as high as 28 °C (83 °F). The average annual precipitation amounts to about 1485 mm (58.5 inches) and receives 163 rainy days on the 1 mm (0.04 inches) threshold annually. Kamiiso enjoys an average of 2899 hours of sunshine throughout the year, and daylight varies from 9 hours 11 minutes to 15 hours 8 minutes per day.

Monthly average temperatures in Kamiiso, Japan

The warmest months in Kamiiso are July, August and September, with daily mean temperatures ranging from 19 to 21 °C (67 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 2 °C (30 - 35 °F) throughout the day. On average each year, Kamiiso experiences 7 days above 25 °C (77.0 °F) and 75 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Kamiiso. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum8°C
(47°F)		8°C
(47°F)		12°C
(53°F)		14°C
(58°F)		20°C
(68°F)		21°C
(69°F)		27°C
(80°F)		28°C
(83°F)		28°C
(83°F)		23°C
(74°F)		17°C
(62°F)		14°C
(57°F)
Mean maximum7°C
(45°F)		6°C
(44°F)		10°C
(50°F)		13°C
(56°F)		17°C
(63°F)		19°C
(66°F)		25°C
(77°F)		26°C
(80°F)		25°C
(78°F)		21°C
(71°F)		16°C
(61°F)		11°C
(52°F)
Average high1°C
(34°F)		1°C
(34°F)		5°C
(42°F)		9°C
(48°F)		13°C
(56°F)		16°C
(61°F)		20°C
(69°F)		23°C
(73°F)		21°C
(70°F)		16°C
(61°F)		10°C
(50°F)		3°C
(38°F)
Daily mean-1°C
(31°F)		-1°C
(30°F)		3°C
(38°F)		7°C
(45°F)		11°C
(52°F)		15°C
(59°F)		19°C
(67°F)		21°C
(71°F)		20°C
(68°F)		15°C
(58°F)		8°C
(47°F)		2°C
(35°F)
Average low-3°C
(28°F)		-3°C
(27°F)		1°C
(34°F)		5°C
(41°F)		9°C
(49°F)		13°C
(56°F)		18°C
(64°F)		20°C
(69°F)		18°C
(65°F)		13°C
(56°F)		6°C
(43°F)		-0°C
(32°F)
Mean minimum-8°C
(17°F)		-8°C
(18°F)		-3°C
(27°F)		1°C
(35°F)		6°C
(43°F)		10°C
(50°F)		15°C
(59°F)		17°C
(64°F)		15°C
(58°F)		7°C
(46°F)		0°C
(33°F)		-6°C
(22°F)
Minimum-9°C
(16°F)		-10°C
(15°F)		-5°C
(23°F)		1°C
(33°F)		6°C
(42°F)		9°C
(49°F)		13°C
(55°F)		16°C
(61°F)		14°C
(57°F)		6°C
(42°F)		-3°C
(28°F)		-7°C
(20°F)

Compare climate in Kamiiso with other places

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

Monthly average precipitation in Kamiiso, Japan

Kamiiso usually has the most precipitation in July, August and September, with an average of 15 rainy days and 191 mm (7.5 inches) of precipitation per month. The driest months in Kamiiso are January, February and March. On average, 75 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kamiiso. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)61 (2.4)79 (3.1)86 (3.4)101 (4.0)116 (4.6)128 (5.0)152 (6.0)254 (10.0)166 (6.5)149 (5.9)103 (4.1)89 (3.5)
Average precipitation days (≥ 1 mm)131411131112161712131318

Monthly sunshine hours in Kamiiso, Japan

The sunniest months in Kamiiso are May, June and July, when the sun shines an average of 9 hours 27 minutes a day. Least sunny months in Kamiiso: January, November and December receive an average of 5 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kamiiso. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours153202256282299287283269260230191181
Mean daily daylight hours9h 30m10h 34m11h 56m13h 20m14h 32m15h 8m14h 50m13h 47m12h 27m11h 3m9h 49m9h 11m

Solar UV radiation in Kamiiso, Japan

Kamiiso experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure. January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Kamiiso UV Index data.

Average daily maximum UV levels by month for Kamiiso. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235891010118632