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Monthly climate in Kamaishi, Iwate, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Kamaishi features a oceanic climate (Cfb).Temperatures typically range between 0 °C (33 °F) and 23 °C (73 °F) through the year, but rarely can drop to -14 °C (7 °F) or can rise to as high as 32 °C (89 °F).The average annual precipitation amounts to about 1508 mm (59.4 inches) and receives 154 rainy days on the 1 mm (0.04 inches) threshold annually.Kamaishi enjoys an average of 2921 hours of sunshine throughout the year, and daylight varies from 9 hours 26 minutes to 14 hours 52 minutes per day.

Monthly average temperatures in Kamaishi, Iwate, Japan §

The warmest months in Kamaishi are July, August and September, with daily mean temperatures ranging from 20 to 23 °C (67 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 2 °C (33 - 36 °F) throughout the day. On average each year, Kamaishi experiences 28 days above 25 °C (77.0 °F) and 71 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Kamaishi, Iwate, 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 10°C
(49°F)		 12°C
(53°F)		 18°C
(64°F)		 22°C
(73°F)		 29°C
(84°F)		 28°C
(82°F)		 30°C
(87°F)		 32°C
(89°F)		 31°C
(88°F)		 26°C
(79°F)		 18°C
(65°F)		 16°C
(61°F)
Mean maximum 8°C
(46°F)		 10°C
(50°F)		 15°C
(59°F)		 19°C
(67°F)		 24°C
(76°F)		 24°C
(76°F)		 29°C
(84°F)		 31°C
(87°F)		 28°C
(83°F)		 23°C
(74°F)		 18°C
(64°F)		 12°C
(55°F)
Average high 3°C
(37°F)		 4°C
(39°F)		 8°C
(47°F)		 12°C
(54°F)		 17°C
(63°F)		 20°C
(68°F)		 24°C
(75°F)		 25°C
(78°F)		 22°C
(72°F)		 17°C
(63°F)		 12°C
(53°F)		 5°C
(41°F)
Daily mean 0°C
(33°F)		 1°C
(33°F)		 4°C
(40°F)		 8°C
(47°F)		 14°C
(57°F)		 17°C
(63°F)		 21°C
(70°F)		 23°C
(73°F)		 20°C
(67°F)		 14°C
(58°F)		 8°C
(47°F)		 2°C
(36°F)
Average low -2°C
(29°F)		 -2°C
(28°F)		 1°C
(34°F)		 5°C
(41°F)		 11°C
(52°F)		 14°C
(58°F)		 19°C
(67°F)		 20°C
(69°F)		 17°C
(63°F)		 11°C
(52°F)		 5°C
(41°F)		 -0°C
(32°F)
Mean minimum -9°C
(17°F)		 -8°C
(18°F)		 -4°C
(25°F)		 -0°C
(32°F)		 6°C
(42°F)		 11°C
(52°F)		 15°C
(60°F)		 16°C
(61°F)		 12°C
(54°F)		 6°C
(43°F)		 -0°C
(32°F)		 -5°C
(23°F)
Minimum -14°C
(7°F)		 -11°C
(13°F)		 -10°C
(14°F)		 -2°C
(28°F)		 5°C
(42°F)		 9°C
(49°F)		 14°C
(57°F)		 13°C
(56°F)		 8°C
(47°F)		 4°C
(40°F)		 -2°C
(28°F)		 -6°C
(21°F)

Compare climate in Kamaishi with other places

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

Monthly average precipitation in Kamaishi, Iwate, Japan §

Kamaishi usually has the most precipitation in July, August and October, with an average of 16 rainy days and 206 mm (8.1 inches) of precipitation per month.The driest months in Kamaishi are January, February and November. On average, 52 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kamaishi, Iwate, 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) 45 (1.8) 56 (2.2) 121 (4.8) 123 (4.9) 118 (4.7) 135 (5.3) 187 (7.3) 208 (8.2) 171 (6.7) 223 (8.8) 56 (2.2) 67 (2.6)
Average precipitation days (≥ 1 mm) 9 9 12 14 12 16 18 19 15 13 7 10

Monthly sunshine hours in Kamaishi, Iwate, Japan §

The sunniest months in Kamaishi are April, May and June, when the sun shines an average of 9 hours 22 minutes a day.Least sunny months in Kamaishi: January, October and December receive an average of 6 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kamaishi, Iwate, 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 169 224 264 270 298 283 261 257 246 217 219 208
Mean daily daylight hours 9h 43m 10h 42m 11h 57m 13h 14m 14h 19m 14h 52m 14h 35m 13h 38m 12h 25m 11h 8m 10h 1m 9h 26m

Solar UV radiation in Kamaishi, Iwate, Japan §

Kamaishi experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / 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 4. For more detailed information, check out our hourly Kamaishi UV Index data.

Average daily maximum UV levels by month for Kamaishi, Iwate, 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) 3 4 6 8 9 11 10 10 9 6 4 3