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Osu Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Osu year round climate

  • Spring (March–May): Average 10.9–19.8°C, mild climate but with relatively high rainfall, especially in April. Common activities: Flower viewing (such as cherry blossoms and plum blossoms, depending on actual blooming conditions), outdoor walks. Recommended clothing: Light jacket, long-sleeved shirts and pants, rain gear.
  • Summer (June–August): Average 24.0–29.4°C, hot and humid with abundant rainfall. Common activities: Indoor activities, nighttime activities, visits to summer resorts. Recommended clothing: Light and breathable clothing, short sleeves, shorts, sun hat, rain gear.
  • Autumn (September–November): Average 14.3–27.2°C, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: Maple leaf viewing (depending on actual leaf color change conditions), outdoor activities. Recommended clothing: Long-sleeved shirts and pants, light jacket, adjust clothing according to temperature changes.
  • Winter (December–February): Average 5.1–7.3°C, cold and dry with less rainfall. Common activities: Hot spring bathing, visiting indoor attractions. Recommended clothing: Warm jacket, sweater, scarf, gloves, hat.

Osu climatological average

Annual average temperature: approx. 17°C / Annual rainfall: approx. 1621 mm / Summer humidity: 70%–80% / Rainiest month: June

Osu monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
5.1°C
27
February
6.4°C
72.3
March
10.9°C
131.3
April
16.7°C
148.7
May
19.8°C
181.3
June
24°C
241.7
July
28.6°C
221.7
August
29.4°C
211.7
September
27.2°C
149.3
October
19.5°C
113
November
14.3°C
94.3
December
7.3°C
28.7

Osu weather for the next seven days

6/18
Thursday
Patchy rain nearby
29.9°C/21.1°C
6/19
Friday
Patchy rain nearby
31.1°C/21.7°C
6/20
Saturday
Heavy rain
23.9°C/21.1°C
6/21
Sunday
Moderate rain
30.1°C/21.1°C
6/22
Monday
Moderate rain
24.3°C/21.3°C
6/23
Tuesday
Sunny
26.3°C/19.3°C
6/24
Wednesday
Patchy rain nearby
24.6°C/17.7°C