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Monthly climate in Yokohama, Japan

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Yokohama features a humid subtropical climate (Cfa). Temperatures typically range between 6 °C (44 °F) and 28 °C (82 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 1546 mm (60.8 inches) and receives 135 rainy days on the 1 mm (0.04 inches) threshold annually. Yokohama enjoys an average of 2925 hours of sunshine throughout the year, and daylight varies from 9 hours 47 minutes to 14 hours 29 minutes per day.

Monthly average temperatures in Yokohama, Japan

The warmest months in Yokohama are July, August and September, with daily mean temperatures ranging from 24 to 28 °C (76 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 9 °C (44 - 49 °F) throughout the day. On average each year, Yokohama experiences 78 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Yokohama. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(65°F)		18°C
(66°F)		20°C
(69°F)		23°C
(74°F)		27°C
(80°F)		29°C
(85°F)		35°C
(95°F)		34°C
(93°F)		32°C
(90°F)		28°C
(83°F)		23°C
(73°F)		21°C
(70°F)
Mean maximum15°C
(60°F)		16°C
(62°F)		19°C
(66°F)		22°C
(72°F)		25°C
(78°F)		27°C
(81°F)		31°C
(89°F)		33°C
(92°F)		31°C
(88°F)		27°C
(81°F)		22°C
(71°F)		18°C
(64°F)
Average high9°C
(49°F)		11°C
(51°F)		14°C
(57°F)		17°C
(63°F)		22°C
(71°F)		24°C
(76°F)		28°C
(82°F)		30°C
(86°F)		26°C
(79°F)		21°C
(71°F)		17°C
(63°F)		12°C
(54°F)
Daily mean6°C
(44°F)		7°C
(45°F)		11°C
(52°F)		15°C
(58°F)		19°C
(67°F)		22°C
(72°F)		26°C
(78°F)		28°C
(82°F)		24°C
(76°F)		19°C
(67°F)		14°C
(58°F)		9°C
(49°F)
Average low3°C
(38°F)		4°C
(39°F)		7°C
(46°F)		12°C
(53°F)		17°C
(63°F)		20°C
(69°F)		24°C
(75°F)		26°C
(79°F)		22°C
(72°F)		17°C
(63°F)		12°C
(53°F)		6°C
(44°F)
Mean minimum0°C
(32°F)		1°C
(33°F)		3°C
(37°F)		6°C
(44°F)		12°C
(53°F)		17°C
(64°F)		21°C
(70°F)		22°C
(72°F)		18°C
(65°F)		12°C
(54°F)		6°C
(43°F)		2°C
(36°F)
Minimum-3°C
(27°F)		-0°C
(31°F)		1°C
(34°F)		4°C
(40°F)		11°C
(52°F)		16°C
(61°F)		19°C
(66°F)		20°C
(68°F)		16°C
(60°F)		11°C
(52°F)		4°C
(40°F)		0°C
(33°F)

Compare climate in Yokohama with other places

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

Monthly average precipitation in Yokohama, Japan

Yokohama usually has the most precipitation in July, September and October, with an average of 16 rainy days and 221 mm (8.7 inches) of precipitation per month. The driest months in Yokohama are January, February and December. On average, 53 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Yokohama. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)52 (2.1)43 (1.7)138 (5.4)116 (4.6)118 (4.6)161 (6.3)209 (8.2)104 (4.1)187 (7.4)266 (10.5)87 (3.4)64 (2.5)
Average precipitation days (≥ 1 mm)471210111316121616117

Monthly sunshine hours in Yokohama, Japan

The sunniest months in Yokohama are April, May and August, when the sun shines an average of 9 hours 12 minutes a day. Least sunny months in Yokohama: January, October and November receive an average of 6 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Yokohama. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours190232259273284262233288235202230231
Mean daily daylight hours10h 2m10h 53m11h 58m13h 5m14h 1m14h 29m14h 15m13h 26m12h 22m11h 15m10h 17m9h 47m

Solar UV radiation in Yokohama, Japan

Yokohama experiences the highest level of ultraviolet (UV) radiation in May, 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 Yokohama UV Index data.

Average daily maximum UV levels by month for Yokohama. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)35891111111110754