nomadseason

Monthly climate in Iyo, Ehime, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Iyo features a humid subtropical climate (Cfa).Temperatures typically range between 5 °C (42 °F) and 27 °C (81 °F) through the year, but rarely can drop to -4 °C (24 °F) or can rise to as high as 33 °C (91 °F).The average annual precipitation amounts to about 1900 mm (74.8 inches) and receives 144 rainy days on the 1 mm (0.04 inches) threshold annually.Iyo enjoys an average of 3181 hours of sunshine throughout the year, and daylight varies from 9 hours 56 minutes to 14 hours 20 minutes per day.

Monthly average temperatures in Iyo, Ehime, Japan §

The warmest months in Iyo are July, August and September, with daily mean temperatures ranging from 24 to 27 °C (75 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 8 °C (42 - 46 °F) throughout the day. On average each year, Iyo experiences 87 days above 25 °C (77.0 °F) and 9 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Iyo, Ehime, 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 15°C
(59°F)		 19°C
(67°F)		 20°C
(69°F)		 24°C
(75°F)		 28°C
(82°F)		 30°C
(86°F)		 33°C
(91°F)		 33°C
(91°F)		 33°C
(91°F)		 29°C
(84°F)		 25°C
(77°F)		 22°C
(71°F)
Mean maximum 13°C
(56°F)		 15°C
(59°F)		 19°C
(67°F)		 23°C
(73°F)		 27°C
(80°F)		 28°C
(82°F)		 32°C
(90°F)		 33°C
(91°F)		 31°C
(88°F)		 27°C
(82°F)		 22°C
(72°F)		 17°C
(63°F)
Average high 9°C
(48°F)		 9°C
(49°F)		 14°C
(57°F)		 18°C
(64°F)		 22°C
(72°F)		 25°C
(77°F)		 28°C
(83°F)		 30°C
(87°F)		 27°C
(80°F)		 22°C
(72°F)		 17°C
(62°F)		 11°C
(52°F)
Daily mean 5°C
(42°F)		 6°C
(43°F)		 10°C
(50°F)		 14°C
(57°F)		 18°C
(65°F)		 22°C
(72°F)		 26°C
(79°F)		 27°C
(81°F)		 24°C
(75°F)		 19°C
(66°F)		 13°C
(55°F)		 8°C
(46°F)
Average low 3°C
(37°F)		 3°C
(37°F)		 6°C
(43°F)		 10°C
(50°F)		 15°C
(59°F)		 19°C
(66°F)		 23°C
(74°F)		 25°C
(76°F)		 21°C
(70°F)		 16°C
(60°F)		 9°C
(49°F)		 4°C
(40°F)
Mean minimum -1°C
(30°F)		 -1°C
(30°F)		 1°C
(34°F)		 4°C
(39°F)		 9°C
(48°F)		 15°C
(60°F)		 21°C
(69°F)		 22°C
(71°F)		 16°C
(61°F)		 10°C
(50°F)		 3°C
(38°F)		 0°C
(33°F)
Minimum -4°C
(25°F)		 -4°C
(24°F)		 0°C
(33°F)		 2°C
(36°F)		 7°C
(44°F)		 14°C
(57°F)		 18°C
(65°F)		 20°C
(68°F)		 14°C
(58°F)		 8°C
(47°F)		 3°C
(37°F)		 -1°C
(31°F)

Compare climate in Iyo with other places

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

Monthly average precipitation in Iyo, Ehime, Japan §

Iyo usually has the most precipitation in June, July and September, with an average of 16 rainy days and 267 mm (10.5 inches) of precipitation per month.The driest months in Iyo are January, November and December. On average, 63 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Iyo, Ehime, 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) 60 (2.4) 90 (3.6) 129 (5.1) 135 (5.3) 153 (6.0) 215 (8.5) 374 (14.7) 197 (7.7) 212 (8.4) 204 (8.0) 61 (2.4) 69 (2.7)
Average precipitation days (≥ 1 mm) 9 11 12 10 11 14 19 15 15 10 8 10

Monthly sunshine hours in Iyo, Ehime, Japan §

The sunniest months in Iyo are April, May and August, when the sun shines an average of 9 hours 51 minutes a day.Least sunny months in Iyo: January, February and December receive an average of 7 hours 12 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Iyo, Ehime, 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 191 237 273 288 304 283 287 313 268 260 244 227
Mean daily daylight hours 10h 10m 10h 57m 11h 58m 13h 1m 13h 54m 14h 20m 14h 7m 13h 21m 12h 21m 11h 18m 10h 24m 9h 56m

Solar UV radiation in Iyo, Ehime, Japan §

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

Average daily maximum UV levels by month for Iyo, Ehime, 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 9 10 12 11 12 12 11 8 6 4