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Monthly climate in Sukagawa, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sukagawa features a humid subtropical climate (Cfa). Temperatures typically range between 0 °C (33 °F) and 25 °C (77 °F) through the year, but rarely can drop to -11 °C (13 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 1417 mm (55.8 inches) and receives 147 rainy days on the 1 mm (0.04 inches) threshold annually. Sukagawa enjoys an average of 2933 hours of sunshine throughout the year, and daylight varies from 9 hours 38 minutes to 14 hours 39 minutes per day.

Monthly average temperatures in Sukagawa, Japan

The warmest months in Sukagawa are July, August and September, with daily mean temperatures ranging from 20 to 25 °C (68 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 3 °C (33 - 37 °F) throughout the day. On average each year, Sukagawa experiences 64 days above 25 °C (77.0 °F) and 88 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sukagawa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(53°F)		18°C
(65°F)		22°C
(71°F)		27°C
(81°F)		33°C
(91°F)		32°C
(90°F)		34°C
(94°F)		35°C
(95°F)		32°C
(90°F)		27°C
(82°F)		20°C
(69°F)		18°C
(64°F)
Mean maximum9°C
(49°F)		14°C
(57°F)		19°C
(66°F)		23°C
(74°F)		29°C
(85°F)		28°C
(82°F)		33°C
(91°F)		34°C
(93°F)		30°C
(85°F)		26°C
(78°F)		19°C
(67°F)		13°C
(56°F)
Average high4°C
(39°F)		5°C
(42°F)		10°C
(51°F)		15°C
(59°F)		21°C
(70°F)		23°C
(74°F)		27°C
(81°F)		29°C
(84°F)		24°C
(75°F)		18°C
(65°F)		13°C
(56°F)		7°C
(44°F)
Daily mean0°C
(33°F)		1°C
(35°F)		5°C
(42°F)		10°C
(50°F)		16°C
(61°F)		19°C
(67°F)		23°C
(74°F)		25°C
(77°F)		20°C
(68°F)		14°C
(58°F)		8°C
(47°F)		3°C
(37°F)
Average low-3°C
(28°F)		-2°C
(29°F)		1°C
(34°F)		5°C
(41°F)		11°C
(52°F)		15°C
(60°F)		20°C
(68°F)		21°C
(71°F)		17°C
(62°F)		11°C
(52°F)		4°C
(40°F)		-1°C
(31°F)
Mean minimum-7°C
(19°F)		-6°C
(22°F)		-5°C
(24°F)		-2°C
(29°F)		4°C
(39°F)		11°C
(52°F)		16°C
(60°F)		16°C
(61°F)		11°C
(52°F)		5°C
(41°F)		-2°C
(28°F)		-5°C
(24°F)
Minimum-11°C
(13°F)		-8°C
(18°F)		-7°C
(20°F)		-2°C
(28°F)		3°C
(38°F)		8°C
(47°F)		14°C
(58°F)		12°C
(55°F)		9°C
(48°F)		1°C
(35°F)		-3°C
(26°F)		-5°C
(22°F)

Compare climate in Sukagawa with other places

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

Monthly average precipitation in Sukagawa, Japan

Sukagawa usually has the most precipitation in July, September and October, with an average of 16 rainy days and 207 mm (8.2 inches) of precipitation per month. The driest months in Sukagawa 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 Sukagawa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)48 (1.9)40 (1.6)120 (4.7)108 (4.2)128 (5.0)125 (4.9)252 (9.9)125 (4.9)158 (6.2)211 (8.3)47 (1.8)55 (2.2)
Average precipitation days (≥ 1 mm)881112131420161613610

Monthly sunshine hours in Sukagawa, Japan

The sunniest months in Sukagawa are April, May and August, when the sun shines an average of 9 hours 12 minutes a day. Least sunny months in Sukagawa: January, October and December receive an average of 6 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sukagawa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours178228263276287274249283239209227215
Mean daily daylight hours9h 54m10h 48m11h 57m13h 9m14h 9m14h 39m14h 24m13h 31m12h 23m11h 12m10h 10m9h 38m

Solar UV radiation in Sukagawa, Japan

Sukagawa 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 Sukagawa UV Index data.

Average daily maximum UV levels by month for Sukagawa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3579101111119753