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Monthly climate in Goto, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Goto features a humid subtropical climate (Cfa). Temperatures typically range between 10 °C (50 °F) and 28 °C (82 °F) through the year, but rarely can drop to 2 °C (36 °F) or can rise to as high as 30 °C (86 °F). The average annual precipitation amounts to about 1871 mm (73.7 inches) and receives 135 rainy days on the 1 mm (0.04 inches) threshold annually. Goto enjoys an average of 3019 hours of sunshine throughout the year, and daylight varies from 10 hours 1 minutes to 14 hours 15 minutes per day.

Monthly average temperatures in Goto, Japan

The warmest months in Goto are July, August and September, with daily mean temperatures ranging from 25 to 28 °C (78 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 12 °C (50 - 54 °F) throughout the day. On average each year, Goto experiences 70 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Goto. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum20°C
(67°F)		18°C
(64°F)		19°C
(66°F)		22°C
(72°F)		23°C
(73°F)		26°C
(79°F)		29°C
(85°F)		30°C
(86°F)		30°C
(86°F)		27°C
(80°F)		23°C
(74°F)		22°C
(72°F)
Mean maximum17°C
(63°F)		16°C
(62°F)		18°C
(65°F)		20°C
(68°F)		22°C
(72°F)		24°C
(76°F)		28°C
(83°F)		30°C
(85°F)		28°C
(83°F)		26°C
(78°F)		23°C
(73°F)		19°C
(67°F)
Average high11°C
(53°F)		12°C
(53°F)		14°C
(58°F)		17°C
(62°F)		20°C
(68°F)		23°C
(73°F)		26°C
(80°F)		28°C
(83°F)		26°C
(79°F)		22°C
(72°F)		18°C
(65°F)		14°C
(57°F)
Daily mean10°C
(50°F)		10°C
(50°F)		13°C
(56°F)		16°C
(61°F)		19°C
(67°F)		22°C
(72°F)		26°C
(79°F)		28°C
(82°F)		25°C
(78°F)		21°C
(71°F)		17°C
(63°F)		12°C
(54°F)
Average low9°C
(48°F)		9°C
(48°F)		12°C
(54°F)		15°C
(59°F)		18°C
(65°F)		21°C
(70°F)		25°C
(78°F)		27°C
(81°F)		24°C
(76°F)		21°C
(69°F)		16°C
(61°F)		11°C
(52°F)
Mean minimum4°C
(40°F)		4°C
(39°F)		7°C
(45°F)		10°C
(51°F)		15°C
(60°F)		19°C
(67°F)		22°C
(73°F)		25°C
(76°F)		22°C
(71°F)		16°C
(61°F)		11°C
(52°F)		6°C
(42°F)
Minimum2°C
(36°F)		2°C
(36°F)		7°C
(44°F)		8°C
(48°F)		15°C
(59°F)		19°C
(66°F)		21°C
(71°F)		21°C
(69°F)		21°C
(70°F)		15°C
(59°F)		9°C
(49°F)		4°C
(40°F)

Compare climate in Goto with other places

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

Monthly average precipitation in Goto, Japan

Goto usually has the most precipitation in July, August and September, with an average of 14 rainy days and 262 mm (10.3 inches) of precipitation per month. The driest months in Goto are January, November and December. On average, 73 mm (2.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Goto. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)74 (2.9)96 (3.8)148 (5.8)127 (5.0)164 (6.4)198 (7.8)293 (11.5)256 (10.1)237 (9.3)132 (5.2)60 (2.4)86 (3.4)
Average precipitation days (≥ 1 mm)9121299131413159911

Monthly sunshine hours in Goto, Japan

The sunniest months in Goto are May, July and August, when the sun shines an average of 9 hours 40 minutes a day. Least sunny months in Goto: January, February and December receive an average of 6 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Goto. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours152214262282287279298314256258230181
Mean daily daylight hours10h 14m11h 0m11h 59m12h 59m13h 49m14h 15m14h 2m13h 18m12h 20m11h 20m10h 28m10h 1m

Solar UV radiation in Goto, Japan

Goto 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, 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 Goto UV Index data.

Average daily maximum UV levels by month for Goto. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)468101111121210864