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Itoigawa

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Itoigawa Weather and climate

Data source:Meteostat
Update date:2025-09

Itoigawa year round climate
  • Spring (March–May): Average 7.1–16.7°C, mild climate, but early spring can be cold with occasional rainfall. Cherry blossoms may bloom in some areas between March and April. Common activities: Flower viewing (if available), hiking. Recommended clothing: Warm jacket, long-sleeved clothing, comfortable shoes.
  • Summer (June–August): Average 21.8–28.2°C, hot and humid climate with moderate rainfall. Common activities: Beach activities, mountain climbing (avoid afternoon thunderstorms). Recommended clothing: Light and breathable clothing, hat, sunscreen.
  • Autumn (September–November): Average 11.6–24.6°C, pleasant climate, but with heavier rainfall, so pay attention to weather changes. Common activities: Maple leaf viewing (depending on tree species), hiking. Recommended clothing: Comfortable long-sleeved clothing, light jacket, rain gear.
  • Winter (December–February): Average 2.5–4.9°C, cold climate with heavy rainfall and potential snowfall. Common activities: Skiing (check snow conditions), onsen experience. Recommended clothing: Thick warm clothing, waterproof jacket, hat, gloves, scarf.
Itoigawa climatological average

Annual average temperature: approx. 14.3°C / Annual rainfall: approx. 3101 mm / Summer humidity: 70%–80% / Rainiest month: December

Itoigawa monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
2.5°C
441.3
February
3°C
269.3
March
7.1°C
188.9
April
12.9°C
117.3
May
16.7°C
157.4
June
21.8°C
132.3
July
26.6°C
212
August
28.2°C
195.4
September
24.6°C
196.4
October
16.6°C
256.8
November
11.6°C
337.2
December
4.9°C
597
Itoigawa weather for the next seven days
10/23
Thursday
Sunny
15.4°C/8.6°C
10/24
Friday
Sunny
15.8°C/7.6°C
10/25
Saturday
Moderate rain
18.7°C/8.1°C
10/26
Sunday
Moderate rain
16.3°C/11.4°C
10/27
Monday
Moderate rain
18.1°C/12°C
10/28
Tuesday
Patchy rain nearby
14.9°C/10.6°C
10/29
Wednesday
Patchy rain nearby
13.9°C/8.1°C