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Monthly climate in Ryotsu-minato, Niigata, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Ryotsu-minato features a humid subtropical climate (Cfa).Temperatures typically range between 4 °C (40 °F) and 27 °C (81 °F) through the year, but rarely can drop to -3 °C (26 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1742 mm (68.6 inches) and receives 189 rainy days on the 1 mm (0.04 inches) threshold annually.Ryotsu-minato enjoys an average of 2991 hours of sunshine throughout the year, and daylight varies from 9 hours 33 minutes to 14 hours 45 minutes per day.

Monthly average temperatures in Ryotsu-minato, Niigata, Japan §

The warmest months in Ryotsu-minato 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 (40 - 44 °F) throughout the day. On average each year, Ryotsu-minato experiences 60 days above 25 °C (77.0 °F) and 7 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ryotsu-minato, 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
(55°F)		 14°C
(58°F)		 17°C
(63°F)		 21°C
(70°F)		 27°C
(82°F)		 28°C
(82°F)		 36°C
(96°F)		 36°C
(97°F)		 36°C
(96°F)		 27°C
(81°F)		 21°C
(70°F)		 17°C
(63°F)
Mean maximum 10°C
(51°F)		 12°C
(53°F)		 15°C
(60°F)		 19°C
(66°F)		 24°C
(76°F)		 25°C
(78°F)		 31°C
(88°F)		 34°C
(93°F)		 30°C
(86°F)		 25°C
(78°F)		 20°C
(68°F)		 14°C
(58°F)
Average high 6°C
(42°F)		 6°C
(43°F)		 10°C
(50°F)		 13°C
(56°F)		 19°C
(67°F)		 22°C
(73°F)		 27°C
(81°F)		 29°C
(85°F)		 25°C
(78°F)		 20°C
(68°F)		 14°C
(58°F)		 9°C
(48°F)
Daily mean 4°C
(40°F)		 4°C
(40°F)		 7°C
(46°F)		 11°C
(52°F)		 16°C
(62°F)		 20°C
(69°F)		 25°C
(77°F)		 27°C
(81°F)		 23°C
(74°F)		 18°C
(65°F)		 12°C
(54°F)		 7°C
(44°F)
Average low 2°C
(37°F)		 3°C
(37°F)		 5°C
(42°F)		 9°C
(48°F)		 14°C
(57°F)		 18°C
(65°F)		 23°C
(74°F)		 25°C
(77°F)		 21°C
(71°F)		 16°C
(61°F)		 10°C
(51°F)		 5°C
(41°F)
Mean minimum -2°C
(29°F)		 -1°C
(31°F)		 2°C
(35°F)		 4°C
(40°F)		 9°C
(49°F)		 15°C
(59°F)		 20°C
(69°F)		 21°C
(71°F)		 17°C
(63°F)		 12°C
(53°F)		 5°C
(42°F)		 1°C
(33°F)
Minimum -3°C
(26°F)		 -1°C
(30°F)		 0°C
(33°F)		 3°C
(38°F)		 8°C
(47°F)		 13°C
(56°F)		 20°C
(68°F)		 19°C
(67°F)		 16°C
(61°F)		 11°C
(52°F)		 4°C
(39°F)		 -1°C
(31°F)

Compare climate in Ryotsu-minato with other places

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

Monthly average precipitation in Ryotsu-minato, Niigata, Japan §

Ryotsu-minato usually has the most precipitation in July, August and December, with an average of 18 rainy days and 220 mm (8.6 inches) of precipitation per month.The driest months in Ryotsu-minato are March, May and June. On average, 97 mm (3.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ryotsu-minato, 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) 134 (5.3) 106 (4.2) 103 (4.0) 112 (4.4) 94 (3.7) 93 (3.6) 258 (10.2) 215 (8.4) 160 (6.3) 157 (6.2) 124 (4.9) 187 (7.3)
Average precipitation days (≥ 1 mm) 20 19 15 13 12 10 15 15 15 14 16 25

Monthly sunshine hours in Ryotsu-minato, Niigata, Japan §

The sunniest months in Ryotsu-minato are May, June and August, when the sun shines an average of 10 hours 8 minutes a day.Least sunny months in Ryotsu-minato: January, February and December receive an average of 5 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ryotsu-minato, 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 144 195 251 281 310 306 304 316 262 230 208 179
Mean daily daylight hours 9h 50m 10h 45m 11h 57m 13h 11m 14h 13m 14h 45m 14h 29m 13h 34m 12h 24m 11h 10m 10h 6m 9h 33m

Solar UV radiation in Ryotsu-minato, Niigata, Japan §

Ryotsu-minato 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 Ryotsu-minato UV Index data.

Average daily maximum UV levels by month for Ryotsu-minato, 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