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Monthly climate in Iwata, Shizuoka, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Iwata features a humid subtropical climate (Cfa).Temperatures typically range between 7 °C (44 °F) and 29 °C (84 °F) through the year, but rarely can drop to -2 °C (29 °F) or can rise to as high as 42 °C (107 °F).The average annual precipitation amounts to about 2193 mm (86.4 inches) and receives 144 rainy days on the 1 mm (0.04 inches) threshold annually.Iwata enjoys an average of 3085 hours of sunshine throughout the year, and daylight varies from 9 hours 51 minutes to 14 hours 26 minutes per day.

Monthly average temperatures in Iwata, Shizuoka, Japan §

The warmest months in Iwata are July, August and September, with daily mean temperatures ranging from 25 to 29 °C (77 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 9 °C (44 - 49 °F) throughout the day. On average each year, Iwata experiences 115 days above 25 °C (77.0 °F) and 5 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Iwata, Shizuoka, 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 18°C
(64°F)		 21°C
(71°F)		 25°C
(77°F)		 28°C
(83°F)		 32°C
(90°F)		 32°C
(90°F)		 40°C
(105°F)		 42°C
(107°F)		 36°C
(96°F)		 32°C
(89°F)		 24°C
(75°F)		 23°C
(74°F)
Mean maximum 16°C
(60°F)		 18°C
(64°F)		 22°C
(72°F)		 26°C
(78°F)		 30°C
(86°F)		 31°C
(87°F)		 35°C
(96°F)		 37°C
(99°F)		 34°C
(93°F)		 30°C
(87°F)		 23°C
(74°F)		 19°C
(66°F)
Average high 11°C
(51°F)		 12°C
(53°F)		 16°C
(61°F)		 20°C
(68°F)		 24°C
(76°F)		 27°C
(80°F)		 30°C
(86°F)		 32°C
(91°F)		 28°C
(83°F)		 24°C
(75°F)		 19°C
(66°F)		 13°C
(56°F)
Daily mean 7°C
(44°F)		 7°C
(46°F)		 12°C
(53°F)		 15°C
(60°F)		 20°C
(68°F)		 23°C
(74°F)		 27°C
(81°F)		 29°C
(84°F)		 25°C
(77°F)		 20°C
(68°F)		 15°C
(58°F)		 9°C
(49°F)
Average low 3°C
(38°F)		 4°C
(39°F)		 7°C
(45°F)		 11°C
(53°F)		 16°C
(61°F)		 20°C
(68°F)		 24°C
(76°F)		 26°C
(79°F)		 22°C
(72°F)		 17°C
(63°F)		 11°C
(52°F)		 5°C
(42°F)
Mean minimum -1°C
(30°F)		 -0°C
(32°F)		 2°C
(36°F)		 5°C
(41°F)		 10°C
(50°F)		 16°C
(62°F)		 21°C
(70°F)		 22°C
(73°F)		 18°C
(65°F)		 11°C
(52°F)		 5°C
(41°F)		 1°C
(34°F)
Minimum -2°C
(29°F)		 -2°C
(29°F)		 1°C
(34°F)		 3°C
(37°F)		 9°C
(49°F)		 15°C
(59°F)		 19°C
(67°F)		 20°C
(68°F)		 15°C
(60°F)		 10°C
(50°F)		 3°C
(38°F)		 -0°C
(32°F)

Compare climate in Iwata with other places

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

Monthly average precipitation in Iwata, Shizuoka, Japan §

Iwata usually has the most precipitation in June, July and October, with an average of 17 rainy days and 321 mm (12.6 inches) of precipitation per month.The driest months in Iwata are January, February and December. On average, 64 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Iwata, Shizuoka, 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) 51 (2.0) 76 (3.0) 166 (6.5) 172 (6.8) 198 (7.8) 261 (10.3) 408 (16.1) 197 (7.8) 222 (8.7) 293 (11.5) 83 (3.3) 67 (2.6)
Average precipitation days (≥ 1 mm) 4 6 10 11 12 16 21 15 20 15 8 6

Monthly sunshine hours in Iwata, Shizuoka, Japan §

The sunniest months in Iwata are April, May and August, when the sun shines an average of 9 hours 44 minutes a day.Least sunny months in Iwata: January, October and December receive an average of 6 hours 56 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Iwata, Shizuoka, 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 188 234 268 281 298 274 267 316 256 226 241 230
Mean daily daylight hours 10h 5m 10h 54m 11h 58m 13h 3m 13h 58m 14h 26m 14h 12m 13h 24m 12h 21m 11h 16m 10h 20m 9h 51m

Solar UV radiation in Iwata, Shizuoka, Japan §

Iwata 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 exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Iwata UV Index data.

Average daily maximum UV levels by month for Iwata, Shizuoka, 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 5 8 10 11 11 12 11 10 7 5 4