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Monthly climate in Yonezawa, Yamagata, Japan

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Yonezawa features a humid continental climate (Dfb).Temperatures typically range between -2 °C (28 °F) and 23 °C (74 °F) through the year, but rarely can drop to -16 °C (3 °F) or can rise to as high as 34 °C (93 °F).The average annual precipitation amounts to about 2026 mm (79.8 inches) and receives 220 rainy days on the 1 mm (0.04 inches) threshold annually.Yonezawa enjoys an average of 2721 hours of sunshine throughout the year, and daylight varies from 9 hours 34 minutes to 14 hours 43 minutes per day.

Monthly average temperatures in Yonezawa, Yamagata, Japan §

The warmest months in Yonezawa are July, August and September, with daily mean temperatures ranging from 19 to 23 °C (66 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 0 °C (28 - 33 °F) throughout the day. On average each year, Yonezawa experiences 44 days above 25 °C (77.0 °F) and 110 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Yonezawa, Yamagata, 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 6°C
(44°F)		 10°C
(50°F)		 18°C
(65°F)		 24°C
(75°F)		 31°C
(88°F)		 32°C
(89°F)		 33°C
(92°F)		 34°C
(93°F)		 31°C
(89°F)		 26°C
(79°F)		 20°C
(69°F)		 16°C
(61°F)
Mean maximum 5°C
(41°F)		 7°C
(46°F)		 14°C
(58°F)		 21°C
(71°F)		 27°C
(80°F)		 26°C
(80°F)		 31°C
(88°F)		 32°C
(91°F)		 28°C
(83°F)		 24°C
(76°F)		 18°C
(64°F)		 10°C
(51°F)
Average high 0°C
(33°F)		 1°C
(35°F)		 6°C
(43°F)		 12°C
(54°F)		 19°C
(67°F)		 22°C
(72°F)		 26°C
(78°F)		 27°C
(81°F)		 22°C
(73°F)		 17°C
(62°F)		 11°C
(51°F)		 3°C
(38°F)
Daily mean -2°C
(28°F)		 -2°C
(29°F)		 2°C
(36°F)		 8°C
(46°F)		 14°C
(58°F)		 18°C
(64°F)		 22°C
(72°F)		 23°C
(74°F)		 19°C
(66°F)		 13°C
(55°F)		 7°C
(44°F)		 0°C
(33°F)
Average low -5°C
(24°F)		 -5°C
(24°F)		 -1°C
(30°F)		 3°C
(38°F)		 10°C
(50°F)		 14°C
(58°F)		 19°C
(67°F)		 20°C
(69°F)		 15°C
(60°F)		 10°C
(49°F)		 3°C
(37°F)		 -3°C
(27°F)
Mean minimum -10°C
(14°F)		 -10°C
(14°F)		 -8°C
(17°F)		 -3°C
(26°F)		 4°C
(39°F)		 9°C
(49°F)		 15°C
(60°F)		 15°C
(60°F)		 9°C
(49°F)		 3°C
(38°F)		 -4°C
(25°F)		 -9°C
(16°F)
Minimum -12°C
(10°F)		 -16°C
(3°F)		 -12°C
(11°F)		 -6°C
(22°F)		 2°C
(35°F)		 6°C
(44°F)		 14°C
(57°F)		 12°C
(54°F)		 7°C
(45°F)		 3°C
(37°F)		 -10°C
(15°F)		 -12°C
(11°F)

Compare climate in Yonezawa with other places

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

Monthly average precipitation in Yonezawa, Yamagata, Japan §

Yonezawa usually has the most precipitation in July, August and December, with an average of 21 rainy days and 241 mm (9.5 inches) of precipitation per month.The driest months in Yonezawa are May, June and November. On average, 124 mm (4.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Yonezawa, Yamagata, 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) 169 (6.6) 167 (6.6) 153 (6.0) 138 (5.4) 120 (4.7) 135 (5.3) 298 (11.7) 221 (8.7) 140 (5.5) 164 (6.5) 118 (4.7) 203 (8.0)
Average precipitation days (≥ 1 mm) 21 22 20 16 15 16 20 20 15 14 16 25

Monthly sunshine hours in Yonezawa, Yamagata, Japan §

The sunniest months in Yonezawa are May, June and August, when the sun shines an average of 9 hours 10 minutes a day.Least sunny months in Yonezawa: January, February and December receive an average of 5 hours 9 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Yonezawa, Yamagata, 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 133 181 240 264 289 276 262 278 241 199 200 153
Mean daily daylight hours 9h 50m 10h 46m 11h 57m 13h 10m 14h 12m 14h 43m 14h 28m 13h 34m 12h 24m 11h 11m 10h 7m 9h 34m

Solar UV radiation in Yonezawa, Yamagata, Japan §

Yonezawa experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 11, 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 Yonezawa UV Index data.

Average daily maximum UV levels by month for Yonezawa, Yamagata, 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 5 8 9 10 11 11 11 9 7 5 3