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Iizuna Town

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Iizuna Town Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Iizuna Town year round climate

  • Spring (March–May): Average 6–17°C, mild climate, but still chilly in early spring, increasing rainfall. Common activities: Hiking, flower viewing. Recommended clothing: Light jacket, long-sleeved shirt, warm clothing for mornings and evenings.
  • Summer (June–August): Average 21–27°C, warm and humid, more rainfall, occasional showers. Common activities: Mountain hiking, outdoor picnics. Recommended clothing: Light and breathable clothing, rain gear.
  • Autumn (September–November): Average 9–24°C, pleasant climate, large temperature difference between morning and evening, gradually decreasing rainfall. Common activities: Maple viewing, hiking. Recommended clothing: Light jacket, long-sleeved shirt, warm clothing for mornings and evenings.
  • Winter (December–February): Average -0.3–2.6°C, cold and dry, low probability of snowfall. Common activities: Skiing (requires travel to nearby areas), hot spring bathing. Recommended clothing: Warm jacket, sweater, scarf, gloves.

Iizuna Town climatological average

Annual average temperature: approx. 13°C / Annual rainfall: approx. 1004 mm / Summer humidity: 70%–80% / Rainiest month: July

Iizuna Town monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
-0.3°C
37.7
February
0.9°C
43.3
March
6°C
76.7
April
12.9°C
83.7
May
16.6°C
108.3
June
21.3°C
94.7
July
25.7°C
141.3
August
27°C
115
September
23.9°C
138.7
October
15.1°C
64
November
9.2°C
70.7
December
2.6°C
30.7

Iizuna Town weather for the next seven days

4/10
Friday
Heavy rain
16.1°C/9.2°C
4/11
Saturday
Patchy rain nearby
20.6°C/5.4°C
4/12
Sunday
Sunny
17°C/0.3°C
4/13
Monday
Partly Cloudy
21°C/6.9°C
4/14
Tuesday
Partly Cloudy
22.9°C/6.6°C
4/15
Wednesday
Patchy rain nearby
21.7°C/10°C
4/16
Thursday
Patchy rain nearby
18.9°C/10.8°C

Iizuna Town Frequently Asked Questions and Useful Information for Travel

What is the best time to visit?

The best time to visit is during the winter, especially from December to March, when skiing and other winter activities can be enjoyed.

What are the must-see attractions?

Must-see attractions include the Togakushi Mountains, Mount Iizuna, and the various natural attractions within the Joshinetsu Plateau National Park.