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Monthly climate in Nishiwaki, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Nishiwaki features a humid subtropical climate (Cfa). Temperatures typically range between 4 °C (40 °F) and 28 °C (83 °F) through the year, but rarely can drop to -9 °C (17 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 1616 mm (63.6 inches) and receives 124 rainy days on the 1 mm (0.04 inches) threshold annually. Nishiwaki enjoys an average of 2847 hours of sunshine throughout the year, and daylight varies from 9 hours 50 minutes to 14 hours 27 minutes per day.

Monthly average temperatures in Nishiwaki, Japan

The warmest months in Nishiwaki are July, August and September, with daily mean temperatures ranging from 24 to 28 °C (75 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 7 °C (40 - 44 °F) throughout the day. On average each year, Nishiwaki experiences 107 days above 25 °C (77.0 °F) and 39 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Nishiwaki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum15°C
(60°F)		20°C
(67°F)		23°C
(74°F)		26°C
(79°F)		31°C
(89°F)		33°C
(92°F)		37°C
(99°F)		38°C
(101°F)		36°C
(97°F)		31°C
(88°F)		24°C
(75°F)		21°C
(70°F)
Mean maximum14°C
(57°F)		16°C
(61°F)		21°C
(70°F)		24°C
(76°F)		29°C
(85°F)		30°C
(87°F)		34°C
(94°F)		37°C
(99°F)		33°C
(91°F)		29°C
(85°F)		22°C
(73°F)		17°C
(62°F)
Average high9°C
(48°F)		10°C
(49°F)		14°C
(58°F)		19°C
(66°F)		24°C
(75°F)		27°C
(80°F)		30°C
(86°F)		32°C
(90°F)		28°C
(82°F)		22°C
(72°F)		17°C
(63°F)		11°C
(52°F)
Daily mean4°C
(40°F)		5°C
(41°F)		9°C
(49°F)		14°C
(57°F)		19°C
(67°F)		22°C
(73°F)		26°C
(80°F)		28°C
(83°F)		24°C
(75°F)		18°C
(65°F)		12°C
(54°F)		7°C
(44°F)
Average low0°C
(33°F)		1°C
(34°F)		4°C
(40°F)		9°C
(48°F)		14°C
(58°F)		18°C
(65°F)		24°C
(75°F)		25°C
(77°F)		21°C
(69°F)		15°C
(59°F)		7°C
(46°F)		2°C
(36°F)
Mean minimum-6°C
(22°F)		-5°C
(23°F)		-2°C
(29°F)		1°C
(35°F)		7°C
(45°F)		13°C
(56°F)		20°C
(69°F)		21°C
(70°F)		15°C
(59°F)		8°C
(47°F)		1°C
(34°F)		-3°C
(26°F)
Minimum-7°C
(19°F)		-9°C
(17°F)		-3°C
(28°F)		-1°C
(31°F)		5°C
(42°F)		11°C
(52°F)		19°C
(66°F)		19°C
(66°F)		11°C
(52°F)		6°C
(44°F)		-0°C
(32°F)		-7°C
(20°F)

Compare climate in Nishiwaki with other places

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

Monthly average precipitation in Nishiwaki, Japan

Nishiwaki usually has the most precipitation in July, September and October, with an average of 14 rainy days and 244 mm (9.6 inches) of precipitation per month. The driest months in Nishiwaki are January, February and November. On average, 45 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Nishiwaki. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)44 (1.7)54 (2.1)105 (4.1)124 (4.9)123 (4.8)140 (5.5)302 (11.9)198 (7.8)213 (8.4)217 (8.5)38 (1.5)56 (2.2)
Average precipitation days (≥ 1 mm)78101010121811141257

Monthly sunshine hours in Nishiwaki, Japan

The sunniest months in Nishiwaki are April, May and August, when the sun shines an average of 9 hours 6 minutes a day. Least sunny months in Nishiwaki: January, February and December receive an average of 6 hours 18 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Nishiwaki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours167205247269280262252286229222221201
Mean daily daylight hours10h 4m10h 54m11h 58m13h 4m13h 59m14h 27m14h 13m13h 24m12h 22m11h 16m10h 19m9h 50m

Solar UV radiation in Nishiwaki, Japan

Nishiwaki 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, November 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 Nishiwaki UV Index data.

Average daily maximum UV levels by month for Nishiwaki. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)468101111121210753