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Osumi
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Best time to visit Osumi
Data source：Meteostat
Last updated：2025-09
Weather in Osumi throughout the year
- 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.
Weather in Osumi
Annual average temperature: approx. 64.2°F / Annual rainfall: approx. 1769 mm / Summer humidity: 70%–80% / Rainiest month: June
Osumi weather by month
Month
Temperature (°F)
Rainfall (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
7-day weather forecast for Osumi
10/29
Thursday
Patchy rain nearby
68.6°F/49°F
10/30
Friday
Light drizzle
68.2°F/54.4°F
10/31
Saturday
Sunny
69.1°F/52.3°F
11/1
Sunday
Sunny
69.7°F/51.2°F
11/2
Monday
Patchy rain nearby
66.8°F/59.2°F
11/3
Tuesday
Partly Cloudy
64.1°F/55.1°F
11/4
Wednesday
Partly Cloudy
65.8°F/53.2°F
