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Iriomote Island

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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

7/18
Saturday
Partly Cloudy
29.6°C/28.6°C
7/19
Sunday
Patchy rain nearby
29.6°C/28.9°C
7/20
Monday
Patchy rain nearby
29.4°C/29°C
7/21
Tuesday
Patchy rain nearby
29.4°C/29.1°C
7/22
Wednesday
Patchy rain nearby
29.4°C/29°C
7/23
Thursday
Partly Cloudy
29°C/28.7°C
7/24
Friday
Sunny
28.9°C/28.2°C

Iriomote Island Frequently Asked Questions and Useful Information for Travel

Is Iriomote Island worth visiting?

Iriomote Island, part of the Yaeyama Islands, is a stunning destination surrounded by pristine oceans and vibrant coral reefs, attracting adventurous travelers. It's an amazing island, perfect for those who seek adventure and natural beauty.

Can you stay on Iriomote Island?

Yes, there is a range of accommodation available on Iriomote Island, including cozy family-run guesthouses and upscale resort hotels. Most accommodations are situated near Uehara Port and Hoshizuna Beach in the north, and Ohara Port in the south.

What is the population of Iriomote Island?

Iriomote Island is the largest island in the Yaeyama Islands, located southwest of Okinawa Island. Administratively, it belongs to Taketomi-cho, Yaeyama-gun, Okinawa Prefecture, with a population of approximately 2,400 persons.

What to do in Iriomote Island?

Iriomote Island is ideal for experiencing its natural wonders. Activities include trekking to unspoiled waterfalls, kayaking through extensive mangrove forests, or enjoying a boat cruise up the island's jungle-threaded rivers. A full day is recommended for trekking or kayaking tours, while river cruises typically take one to two hours.

What is Iriomote Island famous for?

Iriomote Island is renowned for its remarkably preserved subtropical jungle and rich biodiversity, earning it the nickname 'The Galapagos of the East.' It's a UNESCO World Natural Heritage site, celebrated for its unique ecosystems, including vast mangrove forests and rare wildlife.