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Monthly climate in Nagasu, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Nagasu features a humid subtropical climate (Cfa). Temperatures typically range between 8 °C (46 °F) and 28 °C (84 °F) through the year, but rarely can drop to -2 °C (29 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 2052 mm (80.8 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually. Nagasu enjoys an average of 3001 hours of sunshine throughout the year, and daylight varies from 10 hours 0 minutes to 14 hours 16 minutes per day.

Monthly average temperatures in Nagasu, Japan

The warmest months in Nagasu are July, August and September, with daily mean temperatures ranging from 25 to 28 °C (78 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 9 °C (46 - 49 °F) throughout the day. On average each year, Nagasu experiences 113 days above 25 °C (77.0 °F) and 2 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Nagasu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(64°F)		20°C
(69°F)		23°C
(73°F)		28°C
(83°F)		29°C
(84°F)		32°C
(89°F)		35°C
(95°F)		35°C
(96°F)		34°C
(93°F)		31°C
(87°F)		25°C
(77°F)		22°C
(72°F)
Mean maximum16°C
(61°F)		17°C
(64°F)		21°C
(70°F)		25°C
(77°F)		28°C
(83°F)		30°C
(86°F)		33°C
(92°F)		35°C
(95°F)		32°C
(91°F)		29°C
(84°F)		23°C
(74°F)		19°C
(66°F)
Average high11°C
(52°F)		12°C
(53°F)		16°C
(61°F)		20°C
(68°F)		24°C
(75°F)		27°C
(80°F)		30°C
(86°F)		32°C
(89°F)		28°C
(83°F)		24°C
(75°F)		18°C
(65°F)		13°C
(55°F)
Daily mean8°C
(46°F)		8°C
(47°F)		12°C
(54°F)		16°C
(61°F)		20°C
(69°F)		24°C
(75°F)		27°C
(81°F)		28°C
(84°F)		25°C
(78°F)		20°C
(68°F)		14°C
(58°F)		9°C
(49°F)
Average low4°C
(40°F)		5°C
(40°F)		8°C
(47°F)		12°C
(54°F)		17°C
(62°F)		20°C
(69°F)		25°C
(77°F)		26°C
(79°F)		22°C
(73°F)		17°C
(62°F)		11°C
(51°F)		6°C
(43°F)
Mean minimum-1°C
(31°F)		-0°C
(32°F)		3°C
(37°F)		5°C
(42°F)		11°C
(52°F)		17°C
(62°F)		22°C
(71°F)		23°C
(74°F)		17°C
(63°F)		11°C
(52°F)		5°C
(41°F)		1°C
(35°F)
Minimum-2°C
(29°F)		-2°C
(29°F)		2°C
(35°F)		4°C
(39°F)		10°C
(49°F)		15°C
(59°F)		19°C
(66°F)		20°C
(68°F)		15°C
(59°F)		9°C
(49°F)		3°C
(38°F)		0°C
(33°F)

Compare climate in Nagasu with other places

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

Monthly average precipitation in Nagasu, Japan

Nagasu usually has the most precipitation in June, July and August, with an average of 16 rainy days and 336 mm (13.2 inches) of precipitation per month. The driest months in Nagasu are January, November and December. On average, 65 mm (2.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Nagasu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)52 (2.0)88 (3.5)131 (5.1)126 (4.9)201 (7.9)246 (9.7)465 (18.3)299 (11.8)192 (7.6)111 (4.4)66 (2.6)77 (3.0)
Average precipitation days (≥ 1 mm)691181215191414887

Monthly sunshine hours in Nagasu, Japan

The sunniest months in Nagasu are April, May and August, when the sun shines an average of 9 hours 19 minutes a day. Least sunny months in Nagasu: January, February and December receive an average of 6 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Nagasu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours173232260279282259266296251253233213
Mean daily daylight hours10h 13m10h 59m11h 58m12h 59m13h 50m14h 16m14h 3m13h 18m12h 21m11h 20m10h 27m10h 0m

Solar UV radiation in Nagasu, Japan

Nagasu experiences the highest level of ultraviolet (UV) radiation in April, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure. January, February and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Nagasu UV Index data.

Average daily maximum UV levels by month for Nagasu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)468111111121211764