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Iriomote-Ishigaki National Park

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Iriomote-Ishigaki National Park Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Iriomote-Ishigaki National Park year round climate

  • Spring (March–May): Average 20.8–25.7°C, warm and comfortable climate, less rainfall, abundant sunshine. Common activities: snorkeling, diving, birdwatching. Recommended clothing: light and breathable clothing, sun-protective clothing, sunglasses.
  • Summer (June–August): Average 28.2–29.6°C, hot and humid, less rainfall. Common activities: beach activities, water sports, exploring the rainforest. Recommended clothing: light and breathable clothing, swimwear, sun hat.
  • Autumn (September–November): Average 27.2–24.4°C, comfortable and pleasant climate, less rainfall. Common activities: mountain climbing, hiking, enjoying natural scenery. Recommended clothing: light jacket, long-sleeved shirt, comfortable athletic shoes.
  • Winter (December–February): Average 20.3–20.8°C, warm and comfortable, very little rainfall. Common activities: diving, snorkeling, stargazing. Recommended clothing: light warm clothing, light jacket.

Iriomote-Ishigaki National Park climatological average

Annual average temperature: approx. 25°C / Annual rainfall: approx. 76 mm / Summer humidity: 70%–80% / Rainiest month: May

Iriomote-Ishigaki National Park monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
19.5°C
2.6
February
20.8°C
3
March
20.8°C
2.4
April
25.4°C
5.9
May
25.7°C
13
June
28.2°C
5.5
July
29.6°C
8.1
August
29.2°C
6.8
September
28.9°C
6.3
October
27.2°C
11.7
November
24.4°C
7.1
December
20.3°C
4.5

Iriomote-Ishigaki National Park weather for the next seven days

12/18
Thursday
Patchy rain nearby
22.1°C/21.6°C
12/19
Friday
Moderate rain
22.8°C/20.7°C
12/20
Saturday
Moderate rain
22.1°C/21°C
12/21
Sunday
Patchy rain nearby
23.2°C/21.7°C
12/22
Monday
Patchy rain nearby
21°C/19.5°C
12/23
Tuesday
Patchy rain nearby
22.1°C/19°C
12/24
Wednesday
Patchy rain nearby
21.6°C/20.8°C

Iriomote-Ishigaki National Park Frequently Asked Questions and Useful Information for Travel

Is Iriomote Island worth visiting?

Iriomote Island, part of the Yaeyama Islands within Ishigaki National Park, is a stunning destination surrounded by picture-perfect oceans teeming with colorful coral reefs. It's an amazing island that strongly appeals to those with a spirit of adventure and a desire to explore pristine natural landscapes.

How do I get to Iriomote Island?

Iriomote Island is easily accessible by high-speed ferry from Ishigaki Island. Regular ferry services operate between Ishigaki and Iriomote Island, with journey times of approximately 35 to 40 minutes to Ohara Port in the south and 40 to 50 minutes to Uehara Port in the north.

Can you stay on Iriomote Island?

Yes, there is a range of accommodation options available on Iriomote Island. You can find cozy family-run guesthouses as well as more upscale resort hotels. Most accommodations are conveniently located near Uehara Port and Hoshizuna Beach in the north, and Ohara Port in the south.

How much is the ferry from Ishigaki to Iriomote?

The ferry from Ishigaki to Iriomote Island typically costs between ¥1800 and ¥3000 and takes about 40 minutes, making it both an economical and swift way to travel between the two islands.

What are the main attractions in Iriomote-Ishigaki National Park?

Iriomote-Ishigaki National Park is renowned for its subtropical nature, including mangrove forests perfect for kayaking, stunning beaches like Hoshizuna Beach, and the opportunity to spot unique wildlife. The park offers incredible opportunities for eco-tourism and adventure within Ishigaki National Park.