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Osumi

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Osumi Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Osumi year round climate

  • Spring (March–May): 53–68°F 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): 75–84°F 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): 67–79°F 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): 44–46°F 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. 64.2°F / Annual rainfall: approx. 1769 mm / Summer humidity: 70%–80% / Rainiest month: June

Osumi monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
44.2°F
87
February
46°F
93.4
March
53.8°F
148.9
April
61.9°F
176
May
68°F
160.6
June
75.2°F
256.7
July
83.7°F
252.1
August
84.9°F
186.9
September
79.9°F
162.8
October
67.5°F
74.3
November
59°F
104.2
December
46.9°F
66.4

Osumi weather for the next seven days

1/28
Wednesday
Sunny
45.2°F/35.7°F
1/29
Thursday
Sunny
44.3°F/34.5°F
1/30
Friday
Partly Cloudy
41.8°F/34.2°F
1/31
Saturday
Partly Cloudy
47.4°F/33.1°F
2/1
Sunday
Overcast
44.5°F/39.1°F
2/2
Monday
Patchy rain nearby
46°F/39.6°F
2/3
Tuesday
Sunny
50.5°F/35.8°F