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Lake Biwa

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Lake Biwa Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Lake Biwa year round climate

  • Spring (March–May): 8.7–17.7°C on average, mild climate but with relatively heavy rainfall, especially in April and May. Common activities: Flower viewing, lakeside walks, cycling. Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): 22.7–28.5°C on average, hot and humid with frequent rainfall, most rainfall in July. Common activities: Water activities, camping, sightseeing at summer resorts. Recommended clothing: Light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): 18.3–26.1°C on average, pleasant and comfortable climate with less rainfall. Common activities: Hiking, viewing autumn leaves, lakeside leisure. Recommended clothing: Light jacket, long-sleeved shirt.
  • Winter (December–February): 4.1–6.7°C on average, cold and dry with little rainfall. Common activities: Hot spring trips, indoor activities. Recommended clothing: Warm jacket, hat, scarf, gloves.

Lake Biwa climatological average

Annual average temperature: approx. 15.7°C / Annual rainfall: approx. 1670 mm / Summer humidity: 70%–80% / Rainiest month: July

Lake Biwa monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
4.1°C
90.8
February
5°C
79.7
March
8.7°C
123.8
April
14.5°C
152.2
May
17.7°C
188.3
June
22.7°C
223.6
July
27.6°C
235.1
August
28.5°C
165.1
September
26.1°C
117.4
October
18.3°C
124.5
November
13°C
96.9
December
6.7°C
72.7

Lake Biwa weather for the next seven days

4/15
Wednesday
Moderate rain
15.6°C/13.1°C
4/16
Thursday
Sunny
16.4°C/9.9°C
4/17
Friday
Overcast
18.3°C/8.9°C
4/18
Saturday
Partly Cloudy
17.2°C/11.5°C
4/19
Sunday
Sunny
20.6°C/11.2°C
4/20
Monday
Sunny
21.2°C/12.1°C
4/21
Tuesday
Patchy rain nearby
16.8°C/11.3°C