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Omishima

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Omishima Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Omishima year round climate

  • Spring (March–May): Average 9.3–17.8°C, mild climate but with relatively high rainfall, especially in April. Common activities: Hiking, flower viewing (e.g., camellia). Recommended clothing: Light jacket, comfortable long-sleeved shirt.
  • Summer (June–August): Average 21.6–27.6°C, hot and humid with relatively high rainfall. Common activities: Beach activities, swimming, mountain climbing (pay attention to sun protection and rain protection). Recommended clothing: Light and breathable clothing, sun hat, rain gear.
  • Autumn (September–November): Average 17.6–25.2°C, comfortable and pleasant climate with gradually decreasing rainfall. Common activities: Maple viewing, cycling, outdoor walks. Recommended clothing: Long-sleeved shirt, light jacket.
  • Winter (December–February): Average 4.0–5.5°C, cold and dry with low rainfall. Common activities: Hot spring bathing, indoor activities. Recommended clothing: Warm jacket, scarf, gloves, hat.

Omishima climatological average

Annual average temperature: approx. 15.5°C / Annual rainfall: approx. 1332 mm / Summer humidity: 70%–80% / Rainiest month: June

Omishima monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
4°C
32.6
February
4.6°C
68.9
March
9.3°C
119.1
April
14.7°C
138.9
May
17.8°C
154.7
June
21.6°C
197
July
26.2°C
170.5
August
27.6°C
163.9
September
25.2°C
103.4
October
17.6°C
72.7
November
12.5°C
87.6
December
5.5°C
23.3

Omishima weather for the next seven days

5/1
Friday
Moderate rain
15.8°C/11.7°C
5/2
Saturday
Sunny
21.4°C/10.7°C
5/3
Sunday
Heavy rain
17.3°C/12.3°C
5/4
Monday
Moderate rain
17.2°C/13.1°C
5/5
Tuesday
Patchy rain nearby
19.7°C/10.8°C
5/6
Wednesday
Sunny
19.5°C/11°C
5/7
Thursday
Sunny
20.4°C/11.9°C

Omishima Frequently Asked Questions and Useful Information for Travel

What is Omishima known for?

Omishima, the largest island along the Shimanami Kaido, offers a charming rural atmosphere. It is renowned for the ancient Oyamazumi Shrine and its captivating art museums. With a growing number of accommodations and cafes, Omishima is becoming an increasingly popular overnight destination.

What is the population of Omishima?

As of the 2020 census, the population of Omishima was 4,963, comprising 2,299 men and 2,264 women.

Is Omishima a good place for cycling?

While the direct Shimanami Kaido route across Omishima is a short 5km, it's worth exploring beyond this. The 45km 'Island Explorer' loop around the entire island is highly recommended for cyclists. The roads are well-maintained, and the scenic views are spectacular.

What kind of art can be found in Omishima?

The art scene in Omishima primarily features contemporary Japanese paintings created between the 1970s and 2000s. The island also hosts special exhibitions that benefit from collaborations with artists.

What are the main attractions on Omishima?

Omishima's main attractions include the significant Oyamazumi Shrine, a sacred site with a rich history. The island also boasts several interesting art museums showcasing local and contemporary Japanese art, making it a cultural hub for visitors.