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Monthly climate in Seto, Aichi, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Seto features a humid subtropical climate (Cfa).Temperatures typically range between 5 °C (41 °F) and 29 °C (85 °F) through the year, but rarely can drop to -5 °C (23 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 1627 mm (64.1 inches) and receives 123 rainy days on the 1 mm (0.04 inches) threshold annually.Seto enjoys an average of 3012 hours of sunshine throughout the year, and daylight varies from 9 hours 49 minutes to 14 hours 28 minutes per day.

Monthly average temperatures in Seto, Aichi, Japan §

The warmest months in Seto are July, August and September, with daily mean temperatures ranging from 25 to 29 °C (77 - 85 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 7 °C (41 - 45 °F) throughout the day. On average each year, Seto experiences 122 days above 25 °C (77.0 °F) and 33 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Seto, Aichi, 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
(64°F)		 21°C
(71°F)		 25°C
(77°F)		 28°C
(83°F)		 32°C
(90°F)		 34°C
(93°F)		 38°C
(100°F)		 39°C
(103°F)		 38°C
(101°F)		 32°C
(90°F)		 25°C
(76°F)		 21°C
(70°F)
Mean maximum 15°C
(59°F)		 17°C
(63°F)		 22°C
(72°F)		 27°C
(80°F)		 30°C
(87°F)		 31°C
(89°F)		 35°C
(95°F)		 37°C
(100°F)		 35°C
(95°F)		 30°C
(86°F)		 23°C
(74°F)		 18°C
(64°F)
Average high 10°C
(50°F)		 11°C
(52°F)		 16°C
(61°F)		 20°C
(68°F)		 25°C
(77°F)		 28°C
(82°F)		 31°C
(88°F)		 33°C
(92°F)		 29°C
(84°F)		 23°C
(75°F)		 18°C
(65°F)		 12°C
(54°F)
Daily mean 5°C
(41°F)		 6°C
(43°F)		 10°C
(51°F)		 15°C
(59°F)		 20°C
(68°F)		 23°C
(74°F)		 27°C
(81°F)		 29°C
(85°F)		 25°C
(77°F)		 19°C
(66°F)		 13°C
(55°F)		 7°C
(45°F)
Average low 0°C
(33°F)		 1°C
(34°F)		 5°C
(41°F)		 9°C
(49°F)		 14°C
(58°F)		 19°C
(66°F)		 24°C
(75°F)		 25°C
(78°F)		 21°C
(70°F)		 15°C
(59°F)		 7°C
(46°F)		 3°C
(37°F)
Mean minimum -4°C
(26°F)		 -3°C
(27°F)		 -1°C
(31°F)		 2°C
(36°F)		 6°C
(44°F)		 14°C
(57°F)		 20°C
(69°F)		 21°C
(70°F)		 15°C
(59°F)		 8°C
(47°F)		 1°C
(35°F)		 -2°C
(28°F)
Minimum -5°C
(23°F)		 -4°C
(24°F)		 -2°C
(29°F)		 -1°C
(30°F)		 5°C
(41°F)		 12°C
(53°F)		 20°C
(67°F)		 19°C
(67°F)		 12°C
(53°F)		 7°C
(44°F)		 0°C
(32°F)		 -3°C
(28°F)

Compare climate in Seto with other places

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

Monthly average precipitation in Seto, Aichi, Japan §

Seto usually has the most precipitation in May, July and October, with an average of 13 rainy days and 226 mm (8.9 inches) of precipitation per month.The driest months in Seto are January, February and December. On average, 49 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Seto, Aichi, 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) 43 (1.7) 52 (2.0) 126 (5.0) 142 (5.6) 173 (6.8) 148 (5.8) 295 (11.6) 169 (6.7) 165 (6.5) 210 (8.2) 54 (2.1) 51 (2.0)
Average precipitation days (≥ 1 mm) 5 5 9 9 10 13 19 14 16 12 6 5

Monthly sunshine hours in Seto, Aichi, Japan §

The sunniest months in Seto are April, May and August, when the sun shines an average of 9 hours 24 minutes a day.Least sunny months in Seto: January, February and December receive an average of 7 hours 0 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Seto, Aichi, 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 184 230 264 276 290 269 255 299 244 234 239 222
Mean daily daylight hours 10h 3m 10h 53m 11h 58m 13h 4m 14h 0m 14h 28m 14h 14m 13h 25m 12h 22m 11h 16m 10h 18m 9h 49m

Solar UV radiation in Seto, Aichi, Japan §

Seto 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, November 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 Seto UV Index data.

Average daily maximum UV levels by month for Seto, Aichi, 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) 4 6 8 10 11 11 11 11 10 7 5 3