Iriomote Island Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Iriomote Island year round climate
Spring (March–May): 70–78°F 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): 83–86°F 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): 75–83°F 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): 66–68°F 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. 77.0°F / Annual rainfall: approx. 2232 mm / Summer humidity: 75%–85% / Rainiest month: September
Iriomote Island monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
66.7°F
96.7
February
68°F
123.3
March
70.9°F
98.3
April
76.3°F
113
May
78.3°F
333.7
June
83.7°F
195.7
July
86.5°F
148.3
August
86.2°F
177.3
September
83.8°F
354
October
80.6°F
231.7
November
75.9°F
203.3
December
68.7°F
157
Iriomote Island weather for the next seven days
11/29
Saturday
Cloudy
73.2°F/70.5°F
11/30
Sunday
Patchy rain nearby
76.3°F/73.9°F
12/1
Monday
Patchy rain nearby
75.7°F/74.7°F
12/2
Tuesday
Patchy rain nearby
74.9°F/72.5°F
12/3
Wednesday
Patchy rain nearby
70.5°F/66.5°F
12/4
Thursday
Patchy rain nearby
66.5°F/63.5°F
12/5
Friday
Patchy rain nearby
69.7°F/68°F
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