Ōshima (Ehime)

Island Japanese island in Ehime Prefecture

Main image
Base of a tree in the grass in Imabari, Ehime - Takeshi DSC 1674 (4036805704).jpg
Docks in Imabari, Ehime - Takeshi DSCF2545 (4036845136).jpg
Fluffy white clouds in Imabari, Ehime - Takeshi DSC 1651 (4036052719).jpg
Hakatajima Island from Roadside Station "Imabari City Tatara Shimanami Park" 4.jpg
Hakatajima Island from Roadside Station "Imabari City Tatara Shimanami Park".jpg
I-S Shipyard-sunaba.JPG
Imabari City from Mt. Kirosan.jpg
Imabari Shipbuilding shipyard at Ōshima, Imabari, Ehime - Takeshi DSCF2516 (4036810788).jpg
IMGP2997 - panoramio.jpg

Ōshima is an island in the Seto Inland Sea administered as part of Ehime Prefecture, Japan. It is one of the small islands that make up the archipelago off the coast of Shikoku.

The island offers coastal scenery, rocky and sandy shorelines, and a small number of settlement clusters rather than large urban development. Outdoor activities are typically low-key and centred on shoreline walks and local fishing harbors.

Ōshima has the characteristics of many Seto Inland Sea islands, with a local economy historically based on fishing and small-scale agriculture. Settlement patterns and land use have changed gradually with modern transport links to the prefectural mainland.

The island sits in the Seto Inland Sea off the coast of Ehime Prefecture in western Japan. It is part of the maritime network of islands between Shikoku and Honshu.

Ōshima (Ehime)
34.1500, 133.0500

How to Get to Ōshima (Ehime) #

Accessible by bridge and local roads as part of the Shimanami Kaido route; ferries also connect the island to nearby ports. Cycling is a popular and scenic way to reach Ōshima.

Tips for Visiting Ōshima (Ehime) #

  • If cycling the Shimanami Kaido, allow extra time to explore the island's inland shrines and small ports.
  • Try local citrus products - the islands in Ehime are known for mandarin orchards.
  • Use local bike rental services which will provide maps and recommended routes.

Best Time to Visit Ōshima (Ehime) #

Spring and autumn provide the best cycling weather and clearer seas for ferry connections.

Spring
Mar-May · 12-22°C
Blossoms and moderate temperatures; excellent for cycling.
Autumn
Sep-Nov · 15-25°C
Clear skies and comfortable riding weather.
Summer
Jun-Aug · 22-30°C
Hot and humid; heavy rain and typhoon season possible.

Weather & Climate near Ōshima (Ehime) #

Climate

Ōshima (Ehime)'s climate is classified as Humid Subtropical - Humid Subtropical climate with hot summers (peaking in August) and cold winters (coldest in January). Temperatures range from 2°C to 31°C. Abundant rainfall (1464 mm/year), wettest in June.

Best Time to Visit
AugustOctoberMay
Temperature & Rainfall
Temperature Range
35°
Warmest Month
-5°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 9°C and lows of 2°C. Moderate rainfall (47 mm) and mostly overcast skies.

56 Acceptable

Comfort

Feels Like Cold
C
Temperature
81%
Humidity
Very Humid

Weather

47 mm
Rainfall
3.7 m/s
Wind
Light Breeze
0.4
UV Index
Low
10.0h daylight

February

February is the coolest month with highs of 10°C and lows of 2°C. Moderate rainfall (62 mm) and mostly overcast skies.

54 Acceptable

Comfort

Feels Like Cold
C
Temperature
10°
79%
Humidity
Very Humid

Weather

62 mm
Rainfall
3.7 m/s
Wind
Light Breeze
0.6
UV Index
Moderate
10.8h daylight

March

March is cold with highs of 12°C and lows of 4°C. Regular rainfall (95 mm) and partly cloudy skies.

56 Acceptable

Comfort

Feels Like Cold
C
Temperature
13°
77%
Humidity
Very Humid

Weather

95 mm
Rainfall
3.5 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
11.8h daylight

April

April is cool with highs of 18°C and lows of 10°C. Significant rainfall (144 mm) and partly cloudy skies.

62 Good

Comfort

14°
Feels Like Cool
14°C
Temperature
10° 18°
77%
Humidity
Very Humid

Weather

144 mm
Rainfall
4.0 m/s
Wind
Light Breeze
1.2
UV Index
High
12.9h daylight

May

May is mild with highs of 22°C and lows of 14°C. Significant rainfall (150 mm) and partly cloudy skies.

70 Very Good

Comfort

18°
Feels Like Mild
18°C
Temperature
14° 22°
77%
Humidity
Very Humid

Weather

150 mm
Rainfall
3.2 m/s
Wind
Light Breeze
1.5
UV Index
Very High
13.8h daylight

June

June is mild with highs of 25°C and lows of 19°C. The wettest month with heavy rain (240 mm) and mostly overcast skies.

66 Good

Comfort

22°
Feels Like Mild
22°C
Temperature
19° 25°
82%
Humidity
Very Humid

Weather

240 mm
Rainfall
3.1 m/s
Wind
Light Breeze
1.5
UV Index
Very High
14.3h daylight

July

July is warm with muggy conditions (dew point 22°C). Significant rainfall (189 mm) and mostly overcast skies.

68 Good

Comfort

26°
Feels Like Warm
26°C
Temperature
23° 30°
84%
Humidity
Very Humid

Weather

189 mm
Rainfall
4.1 m/s
Wind
Light Breeze
1.8
UV Index
Very High
14.1h daylight

August

August is the hottest month, feeling like 31°C with oppressive humidity. Significant rainfall (110 mm) and partly cloudy skies.

76 Very Good

Comfort

31°
Feels Like Hot
27°C
Temperature
24° 31°
81%
Humidity
Very Humid

Weather

110 mm
Rainfall
4.2 m/s
Wind
Light Breeze
1.8
UV Index
Very High
13.3h daylight

September

September is mild with highs of 27°C and lows of 20°C. Significant rainfall (194 mm) and mostly overcast skies.

68 Good

Comfort

24°
Feels Like Mild
24°C
Temperature
20° 27°
81%
Humidity
Very Humid

Weather

194 mm
Rainfall
3.4 m/s
Wind
Light Breeze
1.3
UV Index
High
12.3h daylight

October

October is mild with highs of 22°C and lows of 14°C. Significant rainfall (118 mm) and partly cloudy skies.

74 Very Good

Comfort

18°
Feels Like Mild
18°C
Temperature
15° 22°
80%
Humidity
Very Humid

Weather

118 mm
Rainfall
3.2 m/s
Wind
Light Breeze
0.9
UV Index
Moderate
11.2h daylight

November

November is cool with highs of 16°C and lows of 9°C. Moderate rainfall (74 mm) and partly cloudy skies.

68 Good

Comfort

13°
Feels Like Cool
13°C
Temperature
17°
80%
Humidity
Very Humid

Weather

74 mm
Rainfall
3.2 m/s
Wind
Light Breeze
0.5
UV Index
Moderate
10.2h daylight

December

December is cold with highs of 12°C and lows of 4°C. Moderate rainfall (41 mm) and mostly overcast skies.

58 Acceptable

Comfort

Feels Like Cold
C
Temperature
12°
81%
Humidity
Very Humid

Weather

41 mm
Rainfall
3.4 m/s
Wind
Light Breeze
0.3
UV Index
Low
9.7h daylight

Nearby Attractions to Ōshima (Ehime)