Spring (March–May): Average 13.2–19.6°C, mild climate but with relatively high rainfall, especially in April. Common activities: Flower viewing (if suitable plants are available), outdoor walks (rain gear needed). Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
Summer (June–August): Average 23.1–28.0°C, hot and humid with relatively high rainfall, most rainfall in June. Common activities: Avoiding the heat, indoor activities. Recommended clothing: Light and breathable clothing, sun hat, rain gear.
Autumn (September–November): Average 20.6–26.4°C, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: Hiking, outdoor excursions. Recommended clothing: Light jacket, long-sleeved shirt.
Winter (December–February): Average 8.4–9.6°C, cold climate with less rainfall. Common activities: Hot springs (if available nearby), indoor activities. Recommended clothing: Warm jacket, sweater, scarf, hat.
Izumi climatological average
Annual average temperature: approx. 18°C / Annual rainfall: approx. 2358 mm / Summer humidity: 75%–85% / Rainiest month: June
Izumi monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
8.4°C
73.9
February
9.6°C
105.2
March
13.2°C
167.9
April
17°C
291.2
May
19.6°C
240.9
June
23.1°C
423.7
July
27.6°C
346.9
August
28°C
204.2
September
26.4°C
197.8
October
20.6°C
117.6
November
16.3°C
122.2
December
9.5°C
66.6
Izumi weather for the next seven days
1/29
Thursday
Sunny
9.3°C/4°C
1/30
Friday
Sunny
8.2°C/5.6°C
1/31
Saturday
Patchy rain nearby
8.4°C/3.5°C
2/1
Sunday
Patchy rain nearby
8.7°C/6.8°C
2/2
Monday
Patchy rain nearby
9.7°C/7.5°C
2/3
Tuesday
Patchy rain nearby
11.4°C/8.4°C
2/4
Wednesday
Sunny
12.3°C/7.5°C
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