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Koriyama

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Koriyama Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Koriyama year round climate

  • Spring (March–May): Average 5.6–15.3°C, mild climate but with potentially large temperature variations, relatively high rainfall. Common activities: flower viewing, outings. Recommended clothing: light jacket, long-sleeved shirt; bring rain gear.
  • Summer (June–August): Average 19.7–25.3°C, hot and humid, abundant rainfall. Common activities: visiting summer resorts, playing in streams. Recommended clothing: light and breathable clothing such as short-sleeved T-shirts and shorts; bring rain gear.
  • Autumn (September–November): Average 9.4–22.1°C, pleasant and comfortable climate, decreasing rainfall. Common activities: viewing autumn leaves, hiking. Recommended clothing: comfortable long-sleeved shirts and jackets; significant temperature variations between morning and evening, pay attention to keeping warm.
  • Winter (December–February): Average 0.6–3.0°C, cold and dry, low probability of snowfall. Common activities: indoor activities, onsen experiences. Recommended clothing: warm and thick coats, sweaters, scarves, gloves and hats.

Koriyama climatological average

Annual average temperature: approx. 12.8°C / Annual rainfall: approx. 1294 mm / Summer humidity: 70%–80% / Rainiest month: June

Koriyama monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
0.6°C
35.4
February
1.3°C
53.1
March
5.6°C
113
April
11.9°C
112.8
May
15.3°C
163.3
June
19.7°C
163.4
July
24.6°C
152.9
August
25.3°C
124.3
September
22.1°C
161.1
October
14.4°C
93.9
November
9.4°C
93.6
December
3°C
27.8

Koriyama weather for the next seven days

1/2
Friday
Moderate or heavy snow showers
3°C/-5.1°C
1/3
Saturday
Patchy light snow
2.9°C/-5.5°C
1/4
Sunday
Patchy light snow
4.2°C/-3°C
1/5
Monday
Patchy moderate snow
5.8°C/-4.6°C
1/6
Tuesday
Partly Cloudy
3.6°C/-4.8°C
1/7
Wednesday
Mist
3.2°C/-4.7°C
1/8
Thursday
Blizzard
-1.3°C/-4.2°C