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Inawashiro Lake

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Inawashiro Lake Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Inawashiro Lake year round climate

  • Spring (March–May): 5.4–16.7°C on average. The climate is mild, but early spring can still be cold, so be mindful of the temperature difference between morning and evening. Occasional rainfall begins in March, with moderate rainfall overall. Common activities: Flower viewing, hiking, lake cruises. Recommended clothing: Light jacket, long-sleeved shirts, comfortable walking shoes.
  • Summer (June–August): 21.6–27.5°C on average. Hot and humid with more rainfall, especially in July which sees the most rainfall. Common activities: Water sports, camping, outdoor barbecues. Recommended clothing: Lightweight and breathable clothing, sun hat, sunscreen.
  • Autumn (September–November): 8.9–23.9°C on average. Pleasant and comfortable climate with a larger temperature difference between morning and evening, and moderate rainfall. Common activities: Maple leaf viewing, cycling, mountain climbing. Recommended clothing: Comfortable long-sleeved shirts, light jacket, warm clothing.
  • Winter (December–February): 0.2–2.6°C on average. Cold and dry with occasional snowfall. Common activities: Skiing, onsen experiences, enjoying the winter lake views. Recommended clothing: Warm jacket, scarf, gloves, hat.

Inawashiro Lake climatological average

Annual average temperature: approx. 13.5°C / Annual rainfall: approx. 1102 mm / Summer humidity: 70%–80% / Rainiest month: July

Inawashiro Lake monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
0.2°C
80
February
1.2°C
62.7
March
5.4°C
75.3
April
12.7°C
61.3
May
16.7°C
73.3
June
21.6°C
134.3
July
26.1°C
139
August
27.5°C
78.3
September
23.9°C
109
October
14.9°C
81.3
November
8.9°C
97
December
2.6°C
111.3

Inawashiro Lake weather for the next seven days

4/15
Wednesday
Patchy rain nearby
21.1°C/12.1°C
4/16
Thursday
Moderate rain
15.6°C/6.1°C
4/17
Friday
Overcast
17.5°C/2°C
4/18
Saturday
Patchy rain nearby
18.7°C/5.7°C
4/19
Sunday
Sunny
24.1°C/6.7°C
4/20
Monday
Partly Cloudy
22.2°C/8.9°C
4/21
Tuesday
Patchy rain nearby
17.9°C/9.9°C

Inawashiro Lake Frequently Asked Questions and Useful Information for Travel

Is Inawashiro Lake safe to swim in?

During the summer months, Inawashiro Lake offers opportunities for swimming, fishing, and water sports like boardsailing and water skiing. The northern shore at Nagahama is also a popular spot for camping amidst the natural beauty.

What is the best time of year to visit Inawashiro Lake?

For enjoying warm-weather activities at Inawashiro Lake, the period from late July to early September is considered the best time to visit.

Are there any hot springs near Inawashiro Lake?

Yes, you can experience onsen baths at Village Inawashiro, which are open daily until midnight. The hot spring water, flowing from Mt. Bandai, is known as a 'beautifying hot spring' and a 'fertility hot spring.' Adjacent to the hotel, a ski resort offers winter sports.

Where is Lake Inawashiro located?

Lake Inawashiro, also known as the 'Heavenly Mirror Lake,' is the fourth-largest lake in Japan. It is situated in central Fukushima Prefecture, to the south of Mount Bandai, and lies within the Bandai-Asahi National Park.

What activities can be enjoyed at Inawashiro Lake?

Inawashiro Lake is a hub for various recreational activities. Visitors can enjoy swimming, fishing, and exhilarating water sports such as boardsailing and water skiing during the warmer months. The surrounding areas also offer opportunities for camping, especially on the northern shore at Nagahama.