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
11/26
Wednesday
Patchy rain nearby
8.4°C/4.8°C
11/27
Thursday
Patchy rain nearby
8.4°C/2.2°C
11/28
Friday
Moderate rain
6.5°C/1.5°C
11/29
Saturday
Sunny
5.4°C/-0.5°C
11/30
Sunday
Sunny
8.2°C/0.4°C
12/1
Monday
Patchy rain nearby
9°C/2.5°C
12/2
Tuesday
Patchy rain nearby
7.7°C/0.8°C
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