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Koim Weather and climate

Data source:Meteostat
Update date:2025-09

Koim year round climate
  • Spring (March–May): Average 10.1–18.1°C, mild climate with gradually increasing rainfall. Cherry blossoms start blooming in March. Common activities: flower viewing, hiking, outings. Recommended clothing: light jacket, long-sleeved shirt, and rain gear.
  • Summer (June–August): Average 22.0–27.5°C, hot and humid. June has the most rainfall, while July and August have relatively less. Common activities: swimming, mountain climbing, outdoor activities (pay attention to sun protection). Recommended clothing: light and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): Average 13.3–25.0°C, comfortable and pleasant climate. September has more rainfall, then gradually cools down. Common activities: maple leaf viewing, hiking, picking. Recommended clothing: comfortable long-sleeved clothing, a jacket for mornings and evenings.
  • Winter (December–February): Average 4.3–6.7°C, cold and dry with little rainfall. Common activities: skiing (requires travel to nearby areas), hot springs, indoor activities. Recommended clothing: warm clothing, thick jacket, scarf, gloves, hat.
Koim climatological average

Annual average temperature: approx. 16°C / Annual rainfall: approx. 1433 mm / Summer humidity: 70%–80% / Rainiest month: June

Koim monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
4.3°C
42.9
February
5.6°C
71.6
March
10.1°C
119.9
April
15.2°C
142.7
May
18.1°C
174.4
June
22°C
216.1
July
27°C
108.4
August
27.5°C
98.8
September
25°C
204.1
October
18.2°C
131.2
November
13.3°C
93.1
December
6.7°C
30.3
Koim weather for the next seven days
10/30
Thursday
Patchy rain nearby
18.1°C/12°C
10/31
Friday
Moderate rain
19.7°C/14.1°C
11/1
Saturday
Heavy rain
23.8°C/17.2°C
11/2
Sunday
Sunny
20.7°C/15°C
11/3
Monday
Patchy rain nearby
17.8°C/14.4°C
11/4
Tuesday
Patchy rain nearby
18.2°C/13.9°C
11/5
Wednesday
Heavy rain
17.4°C/15.8°C