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Osumi
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Osumi Weather and climate
Data source：Meteostat
Update date：2025-09
Osumi year round climate
- Spring (March–May): 12.1–20.0°C on average, mild climate with abundant rainfall, suitable for outdoor activities. Common activities: flower viewing, hiking. Recommended clothing: light jacket, long-sleeved shirt.
- Summer (June–August): 24.0–29.4°C on average, hot and humid with more rainfall, pay attention to heatstroke and sun protection. Common activities: swimming, beach activities. Recommended clothing: light and breathable clothing, sun hat.
- Autumn (September–November): 19.7–26.6°C on average, comfortable and pleasant climate, rainfall gradually decreases, suitable for sightseeing. Common activities: visiting scenic spots, tasting local cuisine. Recommended clothing: long-sleeved shirt, light jacket.
- Winter (December–February): 6.8–8.3°C on average, low temperature, low humidity, occasional rainfall. Common activities: indoor activities, onsen experience. Recommended clothing: warm jacket, sweater, scarf.
Osumi climatological average
Annual average temperature: approx. 17.9°C / Annual rainfall: approx. 1769 mm / Summer humidity: 70%–80% / Rainiest month: June
Osumi monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
6.8°C
87
February
7.8°C
93.4
March
12.1°C
148.9
April
16.6°C
176
May
20°C
160.6
June
24°C
256.7
July
28.7°C
252.1
August
29.4°C
186.9
September
26.6°C
162.8
October
19.7°C
74.3
November
15°C
104.2
December
8.3°C
66.4
Osumi weather for the next seven days
10/14
Tuesday
Patchy rain nearby
28.6°C/20.9°C
10/15
Wednesday
Patchy rain nearby
27.7°C/20.9°C
10/16
Thursday
Moderate rain
25.6°C/20.8°C
10/17
Friday
Sunny
25.3°C/18.2°C
10/18
Saturday
Moderate rain
26.7°C/19.5°C
10/19
Sunday
Patchy rain nearby
23.3°C/19.5°C
10/20
Monday
Partly Cloudy
23.2°C/18.8°C
