Although we couldn't go to the waterfall due to the strong wind, the weather cleared up right after we started, and we were able to walk through the mangroves and canoe. It was so much fun learning about the charms of Iriomote Island! There were so many fascinating things to see, such as edible plants and unique creatures 🌱🐚✨ Thank you so much for taking such wonderful photos 🔵 (My friend immediately used the photo you took as his wallpaper lol) We got wetter than we expected, so I'm glad we brought a change of clothes and a towel 😌 (We were able to borrow shoes for the walk and canoeing). Thank you so much!!
Anonymous User
Friend
Iriomote Island Weather, Climate and Best Time to Visit
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
1/10
Saturday
Sunny
18°C/17.4°C
1/11
Sunday
Overcast
18.5°C/16.3°C
1/12
Monday
Overcast
17.5°C/16.1°C
1/13
Tuesday
Sunny
20.4°C/17.9°C
1/14
Wednesday
Sunny
19.5°C/18.8°C
1/15
Thursday
Partly Cloudy
20.7°C/19.9°C
1/16
Friday
Partly Cloudy
21°C/20.4°C
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