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Monthly climate in Shinshimokawa, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Shinshimokawa features a humid continental climate (Dfb). Temperatures typically range between -9 °C (17 °F) and 19 °C (67 °F) through the year, but rarely can drop to -26 °C (-15 °F) or can rise to as high as 32 °C (90 °F). The average annual precipitation amounts to about 1164 mm (45.8 inches) and receives 194 rainy days on the 1 mm (0.04 inches) threshold annually. Shinshimokawa enjoys an average of 2861 hours of sunshine throughout the year, and daylight varies from 8 hours 54 minutes to 15 hours 26 minutes per day.

Monthly average temperatures in Shinshimokawa, Japan

The warmest months in Shinshimokawa are July, August and September, with daily mean temperatures ranging from 15 to 19 °C (60 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -9 to -5 °C (17 - 23 °F) throughout the day. On average each year, Shinshimokawa experiences 19 days above 25 °C (77.0 °F) and 151 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Shinshimokawa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum3°C
(38°F)		7°C
(45°F)		14°C
(58°F)		22°C
(71°F)		32°C
(89°F)		28°C
(83°F)		32°C
(90°F)		31°C
(89°F)		29°C
(85°F)		23°C
(73°F)		15°C
(59°F)		12°C
(53°F)
Mean maximum1°C
(35°F)		4°C
(39°F)		10°C
(51°F)		19°C
(66°F)		26°C
(79°F)		25°C
(77°F)		30°C
(86°F)		29°C
(85°F)		26°C
(80°F)		20°C
(69°F)		14°C
(57°F)		7°C
(44°F)
Average high-5°C
(24°F)		-4°C
(26°F)		2°C
(36°F)		9°C
(49°F)		16°C
(61°F)		18°C
(66°F)		23°C
(74°F)		23°C
(73°F)		20°C
(68°F)		13°C
(56°F)		5°C
(42°F)		-2°C
(28°F)
Daily mean-9°C
(17°F)		-7°C
(19°F)		-2°C
(29°F)		4°C
(40°F)		11°C
(53°F)		14°C
(58°F)		19°C
(67°F)		19°C
(66°F)		15°C
(60°F)		9°C
(48°F)		2°C
(36°F)		-5°C
(23°F)
Average low-13°C
(9°F)		-11°C
(12°F)		-6°C
(22°F)		-0°C
(32°F)		7°C
(44°F)		10°C
(50°F)		15°C
(60°F)		15°C
(60°F)		11°C
(52°F)		4°C
(40°F)		-1°C
(30°F)		-8°C
(18°F)
Mean minimum-21°C
(-6°F)		-21°C
(-6°F)		-14°C
(7°F)		-8°C
(19°F)		-1°C
(31°F)		4°C
(40°F)		11°C
(51°F)		9°C
(48°F)		4°C
(40°F)		-2°C
(29°F)		-9°C
(17°F)		-17°C
(2°F)
Minimum-24°C
(-12°F)		-26°C
(-15°F)		-17°C
(1°F)		-11°C
(12°F)		-2°C
(29°F)		1°C
(34°F)		7°C
(44°F)		6°C
(44°F)		3°C
(37°F)		-4°C
(25°F)		-9°C
(16°F)		-19°C
(-3°F)

Compare climate in Shinshimokawa with other places

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

Monthly average precipitation in Shinshimokawa, Japan

Shinshimokawa usually has the most precipitation in August, October and November, with an average of 17 rainy days and 138 mm (5.5 inches) of precipitation per month. The driest months in Shinshimokawa are January, February and April. On average, 70 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Shinshimokawa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)64 (2.5)76 (3.0)84 (3.3)69 (2.7)94 (3.7)97 (3.8)100 (3.9)158 (6.2)80 (3.1)138 (5.4)119 (4.7)86 (3.4)
Average precipitation days (≥ 1 mm)161815141415111513152226

Monthly sunshine hours in Shinshimokawa, Japan

The sunniest months in Shinshimokawa are April, May and July, when the sun shines an average of 9 hours 38 minutes a day. Least sunny months in Shinshimokawa: January, November and December receive an average of 5 hours 19 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Shinshimokawa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours136180240282285282318275269235179175
Mean daily daylight hours9h 15m10h 26m11h 55m13h 27m14h 46m15h 26m15h 6m13h 57m12h 29m10h 57m9h 37m8h 54m

Solar UV radiation in Shinshimokawa, Japan

Shinshimokawa experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 9, which corresponds to the Very High 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 Shinshimokawa UV Index data.

Average daily maximum UV levels by month for Shinshimokawa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)236789997532