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Oki Islands

Travel Info

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Oki Islands Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Oki Islands year round climate

  • Spring (March–May): Average 9.8–18.4°C, mild climate, but with occasional showers; gradually becoming warm and humid from March to May. Common activities: flower viewing, seaside walks. Recommended clothing: light jacket, long-sleeved shirt, rain gear.
  • Summer (June–August): Average 23.1–28.8°C, hot and humid; July is the rainiest month; sun protection and rain gear are necessary. Common activities: swimming, sea fishing, outdoor activities. Recommended clothing: light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): Average 18.0–13.1°C, pleasant climate, but still relatively high rainfall. Common activities: autumn leaves viewing, seaside strolls. Recommended clothing: light jacket, long-sleeved shirt, rain gear.
  • Winter (December–February): Average 7.1–5.1°C, cold and dry; keep warm. Common activities: hot springs, indoor activities. Recommended clothing: thick coat, warm clothing.

Oki Islands climatological average

Annual average temperature: approx. 16°C / Annual rainfall: approx. 1793 mm / Summer humidity: 70%–80% / Rainiest month: July

Oki Islands monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
5.1°C
149.3
February
5.6°C
93.7
March
9.8°C
110.3
April
14.7°C
141
May
18.4°C
133
June
23.1°C
157.3
July
27.4°C
320
August
28.8°C
153.3
September
25.4°C
143.7
October
18°C
130.7
November
13.1°C
155.3
December
7.1°C
106

Oki Islands weather for the next seven days

12/4
Thursday
Patchy rain nearby
7.6°C/3.5°C
12/5
Friday
Patchy rain nearby
8.8°C/5.9°C
12/6
Saturday
Patchy rain nearby
11.7°C/3.5°C
12/7
Sunday
Patchy rain nearby
16°C/7.5°C
12/8
Monday
Patchy rain nearby
16.1°C/8.4°C
12/9
Tuesday
Partly Cloudy
9°C/6.6°C
12/10
Wednesday
Cloudy
10.2°C/4.8°C

Oki Islands Frequently Asked Questions and Useful Information for Travel

How do you get to the Oki Islands?

You can reach the Oki Islands by ferry. Standard ferries like Ferry Oki, Ferry Kuniga, and Ferry Shirashima, along with the fast ferry Rainbow Jet, operate from Shichirui Port in Shimane Prefecture and Sakaiminato Port in Tottori Prefecture. If Dogo Island is your destination, take Ferry Oki.

What is unique about the Oki Islands?

The Oki Islands are geologically unique as they feature a submarine caldera, a caldera that lies beneath the sea. This rare geological formation is also famously found on the island of Santorini in Greece. Historically, the islands of Japan, including Oki, were once connected to the Eurasian continent.

What is there to do in the Oki Islands?

The exceptionally clear waters surrounding the Oki Islands are perfect for water activities such as swimming, snorkelling, kayaking, and fishing. You can also take scuba diving lessons or rent gear for solo dives if you are an experienced diver. The rugged coastline offers many scenic spots for walking and strolling.

What language do they speak on the Oki Islands?

The primary language spoken in Japan, including the Oki Islands, is Japanese. While there are regional dialects, standard Japanese is understood and used.

When is the best time to visit the Oki Islands?

The best time to visit the Oki Islands is typically during the spring (April to May) and autumn (September to November) when the weather is pleasant for outdoor activities and the scenery is at its most beautiful. Summer offers warm weather ideal for water sports but can be more crowded.