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Monthly climate in Kariwa, Niigata, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Kariwa features a humid subtropical climate (Cfa).Temperatures typically range between 4 °C (39 °F) and 27 °C (81 °F) through the year, but rarely can drop to -5 °C (23 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 2014 mm (79.3 inches) and receives 208 rainy days on the 1 mm (0.04 inches) threshold annually.Kariwa enjoys an average of 2951 hours of sunshine throughout the year, and daylight varies from 9 hours 37 minutes to 14 hours 41 minutes per day.

Monthly average temperatures in Kariwa, Niigata, Japan §

The warmest months in Kariwa are July, August and September, with daily mean temperatures ranging from 23 to 27 °C (74 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 7 °C (39 - 44 °F) throughout the day. On average each year, Kariwa experiences 72 days above 25 °C (77.0 °F) and 10 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Kariwa, Niigata, 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 13°C
(56°F)		 16°C
(61°F)		 19°C
(67°F)		 22°C
(72°F)		 28°C
(83°F)		 30°C
(87°F)		 37°C
(99°F)		 37°C
(98°F)		 35°C
(96°F)		 30°C
(86°F)		 23°C
(74°F)		 19°C
(66°F)
Mean maximum 11°C
(51°F)		 12°C
(54°F)		 17°C
(63°F)		 20°C
(69°F)		 25°C
(78°F)		 27°C
(80°F)		 32°C
(90°F)		 35°C
(96°F)		 31°C
(89°F)		 27°C
(81°F)		 21°C
(71°F)		 15°C
(60°F)
Average high 6°C
(43°F)		 7°C
(44°F)		 11°C
(51°F)		 14°C
(58°F)		 20°C
(68°F)		 23°C
(75°F)		 28°C
(82°F)		 30°C
(86°F)		 26°C
(79°F)		 20°C
(69°F)		 15°C
(59°F)		 9°C
(48°F)
Daily mean 4°C
(39°F)		 4°C
(40°F)		 8°C
(46°F)		 11°C
(53°F)		 17°C
(63°F)		 21°C
(70°F)		 25°C
(78°F)		 27°C
(81°F)		 23°C
(74°F)		 18°C
(64°F)		 12°C
(54°F)		 7°C
(44°F)
Average low 2°C
(36°F)		 2°C
(36°F)		 5°C
(41°F)		 8°C
(47°F)		 13°C
(57°F)		 18°C
(64°F)		 23°C
(74°F)		 25°C
(77°F)		 21°C
(69°F)		 15°C
(60°F)		 9°C
(49°F)		 4°C
(40°F)
Mean minimum -2°C
(28°F)		 -1°C
(30°F)		 1°C
(34°F)		 3°C
(38°F)		 8°C
(47°F)		 14°C
(58°F)		 20°C
(69°F)		 21°C
(70°F)		 16°C
(60°F)		 11°C
(52°F)		 4°C
(39°F)		 0°C
(33°F)
Minimum -5°C
(23°F)		 -2°C
(28°F)		 -1°C
(31°F)		 2°C
(36°F)		 8°C
(46°F)		 12°C
(54°F)		 20°C
(68°F)		 18°C
(65°F)		 15°C
(59°F)		 10°C
(51°F)		 2°C
(36°F)		 -1°C
(31°F)

Compare climate in Kariwa with other places

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

Monthly average precipitation in Kariwa, Niigata, Japan §

Kariwa usually has the most precipitation in January, July and December, with an average of 21 rainy days and 243 mm (9.6 inches) of precipitation per month.The driest months in Kariwa are April, May and June. On average, 105 mm (4.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kariwa, Niigata, 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) 202 (8.0) 165 (6.5) 127 (5.0) 113 (4.5) 101 (4.0) 101 (4.0) 263 (10.3) 181 (7.1) 153 (6.0) 168 (6.6) 177 (7.0) 263 (10.4)
Average precipitation days (≥ 1 mm) 22 22 17 14 12 12 16 15 16 16 20 26

Monthly sunshine hours in Kariwa, Niigata, Japan §

The sunniest months in Kariwa are May, June and August, when the sun shines an average of 9 hours 54 minutes a day.Least sunny months in Kariwa: January, February and December receive an average of 5 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kariwa, Niigata, 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 144 199 251 278 306 299 290 305 257 224 210 183
Mean daily daylight hours 9h 53m 10h 47m 11h 57m 13h 9m 14h 10m 14h 41m 14h 25m 13h 32m 12h 23m 11h 12m 10h 9m 9h 37m

Solar UV radiation in Kariwa, Niigata, Japan §

Kariwa experiences the highest level of ultraviolet (UV) radiation in May, 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 Kariwa UV Index data.

Average daily maximum UV levels by month for Kariwa, Niigata, 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 7 8 10 10 11 11 9 6 4 3