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Monthly climate in Kashiwazaki, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Kashiwazaki features a humid subtropical climate (Cfa). Temperatures typically range between 2 °C (36 °F) and 27 °C (81 °F) through the year, but rarely can drop to -10 °C (15 °F) or can rise to as high as 39 °C (102 °F). The average annual precipitation amounts to about 2092 mm (82.4 inches) and receives 214 rainy days on the 1 mm (0.04 inches) threshold annually. Kashiwazaki enjoys an average of 2979 hours of sunshine throughout the year, and daylight varies from 9 hours 37 minutes to 14 hours 40 minutes per day.

Monthly average temperatures in Kashiwazaki, Japan

The warmest months in Kashiwazaki are July, August and September, with daily mean temperatures ranging from 23 to 27 °C (73 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 5 °C (36 - 41 °F) throughout the day. On average each year, Kashiwazaki experiences 93 days above 25 °C (77.0 °F) and 48 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Kashiwazaki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(57°F)		18°C
(65°F)		22°C
(72°F)		27°C
(81°F)		32°C
(90°F)		33°C
(93°F)		39°C
(102°F)		38°C
(101°F)		37°C
(99°F)		33°C
(91°F)		25°C
(78°F)		21°C
(70°F)
Mean maximum10°C
(50°F)		13°C
(56°F)		20°C
(69°F)		25°C
(76°F)		30°C
(86°F)		30°C
(86°F)		34°C
(94°F)		37°C
(99°F)		33°C
(91°F)		29°C
(84°F)		22°C
(73°F)		16°C
(60°F)
Average high5°C
(41°F)		6°C
(43°F)		12°C
(53°F)		16°C
(62°F)		23°C
(73°F)		25°C
(78°F)		29°C
(85°F)		31°C
(88°F)		27°C
(80°F)		21°C
(69°F)		15°C
(59°F)		8°C
(47°F)
Daily mean2°C
(36°F)		3°C
(37°F)		7°C
(45°F)		12°C
(53°F)		18°C
(64°F)		21°C
(70°F)		26°C
(79°F)		27°C
(81°F)		23°C
(73°F)		17°C
(62°F)		11°C
(51°F)		5°C
(41°F)
Average low-1°C
(31°F)		-1°C
(31°F)		3°C
(37°F)		7°C
(45°F)		13°C
(55°F)		17°C
(63°F)		22°C
(72°F)		24°C
(75°F)		19°C
(66°F)		13°C
(56°F)		7°C
(44°F)		2°C
(35°F)
Mean minimum-6°C
(22°F)		-6°C
(22°F)		-2°C
(28°F)		1°C
(34°F)		6°C
(44°F)		13°C
(55°F)		19°C
(67°F)		19°C
(67°F)		13°C
(56°F)		7°C
(46°F)		-0°C
(32°F)		-4°C
(25°F)
Minimum-10°C
(15°F)		-7°C
(19°F)		-5°C
(24°F)		-1°C
(31°F)		5°C
(42°F)		10°C
(50°F)		18°C
(65°F)		15°C
(60°F)		11°C
(52°F)		7°C
(44°F)		-3°C
(28°F)		-6°C
(21°F)

Compare climate in Kashiwazaki with other places

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

Monthly average precipitation in Kashiwazaki, Japan

Kashiwazaki usually has the most precipitation in January, July and December, with an average of 21 rainy days and 249 mm (9.8 inches) of precipitation per month. The driest months in Kashiwazaki are April, May and June. On average, 125 mm (4.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kashiwazaki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)194 (7.6)164 (6.5)135 (5.3)127 (5.0)123 (4.8)126 (5.0)326 (12.8)164 (6.4)171 (6.7)188 (7.4)149 (5.8)226 (8.9)
Average precipitation days (≥ 1 mm)212119151513191817151724

Monthly sunshine hours in Kashiwazaki, Japan

The sunniest months in Kashiwazaki are May, June and August, when the sun shines an average of 9 hours 44 minutes a day. Least sunny months in Kashiwazaki: January, February and December receive an average of 6 hours 17 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kashiwazaki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours161213257280304292278299254222217198
Mean daily daylight hours9h 53m10h 47m11h 57m13h 9m14h 10m14h 40m14h 25m13h 32m12h 23m11h 12m10h 9m9h 37m

Solar UV radiation in Kashiwazaki, Japan

Kashiwazaki experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 11, 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 Kashiwazaki UV Index data.

Average daily maximum UV levels by month for Kashiwazaki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3589101111119653