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Otsu

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Otsu Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Otsu year round climate

  • Spring (March–May): Average 10.5–19.3°C, mild climate but with relatively high rainfall, especially frequent in April and May. Common activities: Flower viewing, Lake Biwa cruises. Recommended clothing: Light jacket, long-sleeved shirts.
  • Summer (June–August): Average 23.7–29.5°C, hot and humid with frequent rainfall, especially from June to August. Common activities: Swimming, water sports, visiting summer resorts. Recommended clothing: Light and breathable clothing, short sleeves, shorts, sun protection clothing.
  • Autumn (September–November): Average 19.1–27.1°C, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: Hiking, autumn foliage viewing, outdoor excursions. Recommended clothing: Long-sleeved shirts, light jacket.
  • Winter (December–February): Average 5.1–7.2°C, cold and dry with low rainfall. Common activities: Skiing (requires travel to mountainous areas), onsen experience. Recommended clothing: Warm jacket, sweater, scarf, gloves.

Otsu climatological average

Annual average temperature: approx. 17.2°C / Annual rainfall: approx. 1656 mm / Summer humidity: 70%–80% / Rainiest month: August

Otsu monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
5.1°C
47.4
February
6.1°C
72.5
March
10.5°C
131.3
April
16.4°C
182.2
May
19.3°C
199.8
June
23.7°C
248.8
July
28.9°C
176
August
29.5°C
254.7
September
27.1°C
127.3
October
19.1°C
105.2
November
13.9°C
91.9
December
7.2°C
19.2

Otsu weather for the next seven days

12/19
Friday
Sunny
13.5°C/3.1°C
12/20
Saturday
Partly Cloudy
16°C/8.4°C
12/21
Sunday
Patchy rain nearby
15.7°C/9.1°C
12/22
Monday
Moderate rain
9.6°C/6.5°C
12/23
Tuesday
Sunny
11.5°C/6.1°C
12/24
Wednesday
Moderate rain
12.1°C/6.6°C
12/25
Thursday
Partly Cloudy
8.2°C/5°C