Lake Inawashiro

Lake Large Japanese lake near Mount Bandai

Framed by Mt. Bandai, Lake Inawashiro offers wide water for sailing, cycling paths and winter swans along the shore. Travelers use it as a base for Bandai hikes and nearby Aizu onsen towns.

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Lake Inawashiro is a large freshwater lake in Fukushima Prefecture on Honshu, Japan. It is one of Japan’s largest lakes by surface area and sits in a volcanic caldera setting.

The lake attracts visitors for boating, fishing, lakeside walks and views of nearby volcanic peaks. The northern shore offers prominent views of Mount Bandai, and the lake’s open water is used for recreation throughout the warmer months.

Formed within a volcanic landscape, the basin and shores have been used for fishing and local settlement for centuries; volcanic activity in the surrounding area shaped the lake’s present basin.

Lake Inawashiro sits in central Fukushima Prefecture, north of the city of Koriyama and southwest of the Bandai volcanic complex. The lake is surrounded by agricultural lowlands and mountain foothills.

  • Size rank in Japan: Recognised as one of Japan's largest lakes, ranked fourth by surface area among lakes in the country.
  • Mount Bandai views: Offers clear views of Mount Bandai on its northern shore, making it a popular spot for scenic photography.
Lake Inawashiro
37.4833, 140.1000

How to Get to Lake Inawashiro #

Lake Inawashiro is served by rail and road. By train, take the JR Ban’etsu West Line to Inawashiro Station (services run from Koriyama and Aizu‑Wakamatsu); from Inawashiro Station the lakeshore, parks and main visitor spots are a short taxi ride or a walk of roughly 10-20 minutes depending on the exact lakeside destination. By car the lake is about a 20-40 minute drive from nearby regional centres (for example Koriyama), using the prefectural and local roads that ring the lake; there is roadside parking at several lakeside access points.

Tips for Visiting Lake Inawashiro #

  • Go at dawn when Mount Bandai is most likely to be reflected on Inawashiro's surface - early mornings also avoid summer weekend crowds from nearby cities.
  • Use Inawashiro Station (JR Banetsu West Line) or the southern lakeshore parking areas as practical access points; the town's rental-bicycle options make a lakeside loop feasible for a single-day outing.
  • Don't miss viewpoints on the Bandai side of the lake for classic photos of the mountain with the lake in the foreground, and consider staying at a nearby onsen ryokan to enjoy evening views without the daytime crowds.

Best Time to Visit Lake Inawashiro #

Late spring and especially autumn (October-November) are excellent times to visit Lake Inawashiro for scenery and comfortable conditions.

Spring (Cherry blossoms & mild weather)
Apr-May · ~10 to 20°C
Pleasant temperatures and spring flowers make lakeside walks and views of Mt. Bandai attractive.
Autumn (Best time)
Oct-Nov · ~8 to 20°C
Autumn foliage and clear skies offer some of the most scenic views around the lake-one of the most popular visiting periods.
Summer
Jun-Aug · ~20 to 30°C
Warm and humid; good for waterside activities but expect higher humidity and occasional rain.

Weather & Climate near Lake Inawashiro #

Climate

Lake Inawashiro's climate is classified as Humid Subtropical - Humid Subtropical climate with warm summers (peaking in August) and freezing winters (coldest in February). Temperatures range from -4°C to 27°C. Abundant rainfall (1241 mm/year), wettest in September.

Best Time to Visit
AugustJulySeptember
Temperature & Rainfall
Temperature Range
35°
Warmest Month
-14°
Coldest Month
Monthly Conditions

January

January is cold with highs of 4°C and lows of -3°C. Moderate rainfall (60 mm) and partly cloudy skies.

47 Poor

Comfort

Feels Like Cold
C
Temperature
-3°
94%
Humidity
Very Humid

Weather

60 mm
Rainfall
2.8 m/s
Wind
Calm
0.3
UV Index
Low
9.8h daylight

February

February is the coldest month with highs of 3°C and lows of -4°C. Moderate rainfall (58 mm) and partly cloudy skies.

49 Poor

Comfort

Feels Like Freezing
C
Temperature
-4°
92%
Humidity
Very Humid

Weather

58 mm
Rainfall
2.9 m/s
Wind
Calm
0.5
UV Index
Low
10.7h daylight

March

March is cold with highs of 5°C and lows of -2°C. Moderate rainfall (71 mm) and partly cloudy skies.

48 Poor

Comfort

Feels Like Cold
C
Temperature
-3°
86%
Humidity
Very Humid

Weather

71 mm
Rainfall
3.0 m/s
Wind
Light Breeze
0.8
UV Index
Moderate
11.8h daylight

April

April is cold with highs of 11°C and lows of 3°C. Regular rainfall (88 mm) and partly cloudy skies.

56 Acceptable

Comfort

Feels Like Cold
C
Temperature
11°
81%
Humidity
Very Humid

Weather

88 mm
Rainfall
3.2 m/s
Wind
Light Breeze
1.1
UV Index
High
13.0h daylight

May

May is cool with highs of 17°C and lows of 8°C. Regular rainfall (92 mm) and mostly overcast skies.

61 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
17°
80%
Humidity
Very Humid

Weather

92 mm
Rainfall
2.7 m/s
Wind
Calm
1.4
UV Index
High
14.0h daylight

June

June is cool with highs of 20°C and lows of 13°C. Significant rainfall (137 mm) and mostly overcast skies.

59 Acceptable

Comfort

17°
Feels Like Cool
17°C
Temperature
13° 20°
83%
Humidity
Very Humid

Weather

137 mm
Rainfall
2.4 m/s
Wind
Calm
1.5
UV Index
High
14.5h daylight

July

July is mild with highs of 25°C and lows of 17°C. Significant rainfall (160 mm) and mostly overcast skies.

65 Good

Comfort

21°
Feels Like Mild
21°C
Temperature
17° 25°
85%
Humidity
Very Humid

Weather

160 mm
Rainfall
2.4 m/s
Wind
Calm
1.5
UV Index
Very High
14.3h daylight

August

August is the warmest month with highs of 27°C and lows of 19°C. Significant rainfall (163 mm) and mostly overcast skies.

67 Good

Comfort

23°
Feels Like Mild
23°C
Temperature
19° 27°
84%
Humidity
Very Humid

Weather

163 mm
Rainfall
2.7 m/s
Wind
Calm
1.5
UV Index
Very High
13.4h daylight

September

September is mild with highs of 22°C and lows of 15°C. The wettest month with heavy rain (167 mm) and mostly overcast skies.

65 Good

Comfort

19°
Feels Like Mild
19°C
Temperature
15° 22°
86%
Humidity
Very Humid

Weather

167 mm
Rainfall
2.4 m/s
Wind
Calm
1.2
UV Index
High
12.3h daylight

October

October is cool with highs of 16°C and lows of 9°C. Significant rainfall (108 mm) and mostly overcast skies.

59 Acceptable

Comfort

13°
Feels Like Cool
13°C
Temperature
16°
87%
Humidity
Very Humid

Weather

108 mm
Rainfall
2.2 m/s
Wind
Calm
0.8
UV Index
Moderate
11.1h daylight

November

November is cold with highs of 11°C and lows of 4°C. Moderate rainfall (75 mm) and partly cloudy skies.

55 Acceptable

Comfort

Feels Like Cold
C
Temperature
11°
89%
Humidity
Very Humid

Weather

75 mm
Rainfall
2.7 m/s
Wind
Calm
0.4
UV Index
Low
10.0h daylight

December

December is cold with highs of 6°C and lows of 0°C. Moderate rainfall (62 mm) and partly cloudy skies.

47 Poor

Comfort

Feels Like Cold
C
Temperature
-1°
92%
Humidity
Very Humid

Weather

62 mm
Rainfall
2.5 m/s
Wind
Calm
0.2
UV Index
Low
9.5h daylight

Nearby Attractions to Lake Inawashiro