Geruma Island
Island Small Okinawan island with local communities
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Geruma Island (Geruma-jima) is a small island in Okinawa Prefecture, Japan, within the Kerama Islands archipelago. It is one of several low-lying islands in this subtropical cluster.
The island is visited for its coastal scenery and nearshore marine environment typical of the Kerama Islands, which are known for diving and clear water. Facilities and services on very small Kerama islets are limited compared with the larger islands.
Like other Kerama islets, Geruma has been part of Okinawan maritime communities and regional navigation routes; specific historical events tied to the island are not prominent in broad sources.
Located in the East China Sea off the west coast of Okinawa Island, Geruma lies close to other Kerama islands and is reached by local boat services from larger islands in the group.
- Archipelago context: Part of the Kerama Islands group southwest of Okinawa's main island, often visited on short boat trips from larger Kerama islands.
How to Get to Geruma Island #
Typically reached by local ferries or charter boats from larger nearby Okinawan islands or main ports; check local island ferry timetables for exact routes.
Tips for Visiting Geruma Island #
- Access is typically by local boat from nearby larger islands - confirm schedules locally in Okinawa Prefecture.
- Respect local customs and private land signs; many small Okinawan islets have limited infrastructure.
- Bring snorkeling gear if the weather is calm - reefs around such islands can be rich but fragile.
Best Time to Visit Geruma Island #
Geruma Island is a small island in Okinawa Prefecture, Japan; access and facilities are limited, and visits are usually local and informal.
Weather & Climate near Geruma Island #
Subtropical climate with hot summers (peaking in July) and mild winters (coldest in February). Temperatures range from 15°C to 30°C. Heavy rainfall (2166 mm/year), wettest in August.
January
January is cool with highs of 19°C and lows of 15°C. Significant rainfall (132 mm) and mostly overcast skies.
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February
February is the coolest month with highs of 19°C and lows of 15°C. Significant rainfall (129 mm) and mostly overcast skies.
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March
March is mild with highs of 21°C and lows of 17°C. Significant rainfall (177 mm) and mostly overcast skies.
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April
April is mild with highs of 23°C and lows of 19°C. Significant rainfall (184 mm) and mostly overcast skies.
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May
May is mild with highs of 25°C and lows of 22°C. Heavy rain (240 mm) and mostly overcast skies.
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June
June is warm with stifling humidity (dew point 25°C). Heavy rain (243 mm) and mostly overcast skies.
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July
July is the hottest month, feeling like 34°C with oppressive humidity. Significant rainfall (175 mm) and partly cloudy skies.
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August
August is hot, feeling like 33°C with oppressive humidity. The wettest month with heavy rain (252 mm) and partly cloudy skies.
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September
September is hot, feeling like 30°C with oppressive humidity. Heavy rain (216 mm) and partly cloudy skies.
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October
October is warm with highs of 27°C and lows of 23°C. Significant rainfall (174 mm) and partly cloudy skies.
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November
November is mild with highs of 24°C and lows of 20°C. Significant rainfall (134 mm) and mostly overcast skies.
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December
December is mild with highs of 21°C and lows of 17°C. Significant rainfall (110 mm) and mostly overcast skies.
