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Iriomote Island

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Iriomote Island Weather and climate

Data source:Meteostat
Update date:2025-09

Iriomote Island year round climate
  • Spring (March–May): 21.6–25.7°C on average, warm and humid with occasional showers. March and April offer pleasant weather, while May sees increased rainfall. Popular activities: Diving, snorkeling, birdwatching. Recommended clothing: Light long-sleeved clothing, sun protection, rain gear.
  • Summer (June–August): 28.7–30.3°C on average, hot and humid with frequent afternoon showers or thunderstorms. Sea breezes offer some relief. Popular activities: Water activities (e.g., swimming, canoeing, kayaking), jungle trekking. Recommended clothing: Light and breathable clothing, sun protection, hat, rain gear.
  • Autumn (September–November): 24.4–28.8°C on average, mild weather, but September experiences heavier rainfall. October and November offer pleasant weather ideal for outdoor activities. Popular activities: Hiking, maple leaf viewing (in some areas), diving, snorkeling. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
  • Winter (December–February): 19.3–20.4°C on average, relatively warm with occasional showers. Mild weather is suitable for outdoor activities, but warm clothing is recommended. Popular activities: Diving, snorkeling, birdwatching. Recommended clothing: Light warm clothing, jacket.
Iriomote Island climatological average

Annual average temperature: approx. 25°C / Annual rainfall: approx. 2232 mm / Summer humidity: 75%–85% / Rainiest month: September

Iriomote Island monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
19.3°C
96.7
February
20°C
123.3
March
21.6°C
98.3
April
24.6°C
113
May
25.7°C
333.7
June
28.7°C
195.7
July
30.3°C
148.3
August
30.1°C
177.3
September
28.8°C
354
October
27°C
231.7
November
24.4°C
203.3
December
20.4°C
157
Iriomote Island weather for the next seven days
10/30
Thursday
Patchy rain nearby
27.2°C/26.3°C
10/31
Friday
Patchy rain nearby
26.9°C/25.6°C
11/1
Saturday
Patchy rain nearby
25.2°C/24.4°C
11/2
Sunday
Patchy rain nearby
25.9°C/24°C
11/3
Monday
Patchy rain nearby
26.3°C/24.6°C
11/4
Tuesday
Patchy rain nearby
27°C/26.5°C
11/5
Wednesday
Patchy rain nearby
26.9°C/25.4°C