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Monthly climate in Kumamoto, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Kumamoto features a humid subtropical climate (Cfa).Temperatures typically range between 6 °C (44 °F) and 27 °C (82 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 34 °C (94 °F).The average annual precipitation amounts to about 2024 mm (79.7 inches) and receives 141 rainy days on the 1 mm (0.04 inches) threshold annually.Kumamoto enjoys an average of 3015 hours of sunshine throughout the year, and daylight varies from 10 hours 1 minutes to 14 hours 14 minutes per day.

Monthly average temperatures in Kumamoto, Japan §

The warmest months in Kumamoto are July, August and September, with daily mean temperatures ranging from 24 to 27 °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 8 °C (44 - 47 °F) throughout the day. On average each year, Kumamoto experiences 97 days above 25 °C (77.0 °F) and 6 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Kumamoto, Japan.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 17°C
(63°F)		 19°C
(66°F)		 22°C
(72°F)		 26°C
(79°F)		 28°C
(83°F)		 30°C
(87°F)		 34°C
(93°F)		 34°C
(94°F)		 34°C
(93°F)		 30°C
(87°F)		 24°C
(76°F)		 22°C
(71°F)
Mean maximum 15°C
(60°F)		 16°C
(61°F)		 20°C
(69°F)		 24°C
(75°F)		 27°C
(81°F)		 29°C
(84°F)		 32°C
(91°F)		 34°C
(94°F)		 32°C
(89°F)		 28°C
(83°F)		 23°C
(73°F)		 18°C
(65°F)
Average high 9°C
(49°F)		 10°C
(51°F)		 15°C
(59°F)		 19°C
(66°F)		 23°C
(73°F)		 26°C
(78°F)		 29°C
(84°F)		 30°C
(87°F)		 27°C
(81°F)		 23°C
(74°F)		 17°C
(63°F)		 11°C
(52°F)
Daily mean 6°C
(44°F)		 7°C
(45°F)		 11°C
(52°F)		 15°C
(59°F)		 19°C
(67°F)		 23°C
(73°F)		 26°C
(79°F)		 27°C
(82°F)		 24°C
(76°F)		 19°C
(67°F)		 13°C
(56°F)		 8°C
(47°F)
Average low 3°C
(39°F)		 4°C
(39°F)		 7°C
(46°F)		 11°C
(52°F)		 16°C
(61°F)		 20°C
(68°F)		 24°C
(75°F)		 25°C
(77°F)		 22°C
(71°F)		 16°C
(61°F)		 10°C
(50°F)		 5°C
(41°F)
Mean minimum -1°C
(30°F)		 -1°C
(31°F)		 2°C
(36°F)		 5°C
(41°F)		 10°C
(50°F)		 16°C
(61°F)		 21°C
(69°F)		 22°C
(72°F)		 16°C
(62°F)		 10°C
(51°F)		 4°C
(39°F)		 1°C
(33°F)
Minimum -3°C
(27°F)		 -2°C
(29°F)		 1°C
(34°F)		 3°C
(38°F)		 8°C
(46°F)		 15°C
(58°F)		 18°C
(64°F)		 19°C
(67°F)		 14°C
(57°F)		 9°C
(49°F)		 2°C
(36°F)		 -0°C
(32°F)

Compare climate in Kumamoto with other places

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

Monthly average precipitation in Kumamoto, Japan §

Kumamoto usually has the most precipitation in June, July and August, with an average of 15 rainy days and 308 mm (12.1 inches) of precipitation per month.The driest months in Kumamoto are January, November and December. On average, 74 mm (2.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kumamoto, Japan.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 63 (2.5) 105 (4.2) 143 (5.6) 135 (5.3) 207 (8.1) 280 (11.0) 406 (16.0) 238 (9.4) 171 (6.7) 117 (4.6) 76 (3.0) 84 (3.3)
Average precipitation days (≥ 1 mm) 8 11 14 9 12 15 17 14 14 9 9 9

Monthly sunshine hours in Kumamoto, Japan §

The sunniest months in Kumamoto are April, May and August, when the sun shines an average of 9 hours 15 minutes a day.Least sunny months in Kumamoto: January, November and December receive an average of 7 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kumamoto, Japan.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 188 236 264 280 278 248 260 293 250 253 235 225
Mean daily daylight hours 10h 15m 11h 0m 11h 59m 12h 59m 13h 49m 14h 14m 14h 2m 13h 18m 12h 20m 11h 20m 10h 28m 10h 1m

Solar UV radiation in Kumamoto, Japan §

Kumamoto experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 12 - 13, 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 Kumamoto UV Index data.

Average daily maximum UV levels by month for Kumamoto, Japan.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 5 6 9 11 12 12 12 13 11 8 6 4