Shiwaku Islands
Islands Archipelago in the Seto Inland Sea, fishing communities
A scatter of islands in the Seto Inland Sea, the Shiwaku Islands attract ferry-hopping visitors for fishing-village scenes, seafood, coastal cycling and short sea crossings that reveal calm waters and shoreline farms.
The Shiwaku Islands are a group of small islands in the Seto Inland Sea under Kagawa Prefecture administration, distributed between Honshu and Shikoku. They form part of the archipelago of islands within the inland sea.
The archipelago has a long maritime history tied to coastal navigation, fishing, and island-based ship crews active in regional trade. Settlement patterns and local economies have traditionally been oriented to the sea.
The islands lie in the eastern Seto Inland Sea off the coast of Kagawa Prefecture, between the larger islands of Honshu and Shikoku and within Japan’s inner sea network.
- Maritime character: A dispersed archipelago in the Seto Inland Sea administered by Kagawa Prefecture, traditionally associated with fishing and coastal navigation.
How to Get to Shiwaku Islands #
Ferry services link the Shiwaku Islands with Takamatsu and other Seto Inland Sea piers-check local timetables for specific islands. Private boat charters are also possible.
Tips for Visiting Shiwaku Islands #
- Use the ferry from Takamatsu to reach several of the Shiwaku Islands-check schedules as services vary by island and season.
- Visit small island workshops to see traditional salt-making and boatbuilding crafts-call ahead where possible.
- Bring cash-many island vendors do not accept cards and ATMs are rare.
Best Time to Visit Shiwaku Islands #
Spring through autumn for the best boat conditions and island activities.
Weather & Climate near Shiwaku Islands #
Shiwaku Islands's climate is classified as Humid Subtropical - Humid Subtropical climate with hot summers (peaking in August) and cold winters (coldest in February). Temperatures range from 1°C to 30°C. Abundant rainfall (1427 mm/year), wettest in June.
January
January is cold with highs of 8°C and lows of 1°C. Moderate rainfall (36 mm) and mostly overcast skies.
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February
February is the coolest month with highs of 8°C and lows of 1°C. Moderate rainfall (54 mm) and mostly overcast skies.
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March
March is cold with highs of 11°C and lows of 3°C. Regular rainfall (88 mm) and partly cloudy skies.
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April
April is cool with highs of 16°C and lows of 8°C. Significant rainfall (142 mm) and partly cloudy skies.
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May
May is cool with highs of 21°C and lows of 13°C. Significant rainfall (149 mm) and partly cloudy skies.
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June
June is mild with highs of 24°C and lows of 17°C. The wettest month with heavy rain (232 mm) and mostly overcast skies.
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July
July is warm with muggy conditions (dew point 23°C). Significant rainfall (198 mm) and mostly overcast skies.
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August
August is the warmest month with muggy conditions (dew point 23°C). Significant rainfall (106 mm) and partly cloudy skies.
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September
September is mild with highs of 26°C and lows of 20°C. Heavy rain (211 mm) and mostly overcast skies.
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October
October is cool with highs of 21°C and lows of 14°C. Significant rainfall (113 mm) and partly cloudy skies.
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November
November is cool with highs of 15°C and lows of 8°C. Moderate rainfall (68 mm) and partly cloudy skies.
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December
December is cold with highs of 11°C and lows of 3°C. Moderate rainfall (30 mm) and mostly overcast skies.
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