Lohachara Island

Island Former Sundarbans island reportedly submerged by rising seas

Former inhabited island in the Sundarbans, West Bengal, that was reported submerged following severe erosion and sea-level rise. Cited in studies and reporting on climate-induced displacement.

Lohachara Island was a small inhabited island in the Sundarbans delta in the Indian state of West Bengal. It gained attention because it was reported to have been submerged and lost to erosion and sea-level change in the late 20th or early 21st century.

When inhabited it supported a small local population and simple rural livelihoods tied to the Sundarbans’s tidal environment. Because it has been submerged, it no longer functions as a settled island and is cited in discussions about coastal change and displacement in the delta.

Historically the island formed part of the complex of tidal islands, creeks and mangroves that make up the Sundarbans; its disappearance reflects processes of shoreline change and land loss that affect the wider region.

The island lay within the Sundarbans region of the Bay of Bengal along the coast of West Bengal in eastern India, within a low-lying mangrove-dominated delta.

  • Submergence status: Reported to have been submerged and rendered uninhabitable by coastal erosion and sea-level change in the early 21st century, and is no longer an inhabited island.
Lohachara Island
21.8993, 88.1085

How to Get to Lohachara Island #

Located in the Sundarbans region of West Bengal; access is by boat through mangrove channels from coastal towns such as Gosaba or Namkhana. Local conditions and tides dictate safe travel; coordinate with local authorities or guides.

Tips for Visiting Lohachara Island #

  • Lohachara Island has been cited in discussions of sea-level rise - research trips are organised rather than casual visits; check with regional authorities before attempting to approach.
  • Do not assume safe landing: mangrove channels and shifting sediments make access hazardous.
  • If studying climate impacts, coordinate with academic institutions or local environmental groups who have historical data.

Best Time to Visit Lohachara Island #

The island's accessibility depends on tides and monsoon conditions; dry season is the safest time for any field visits.

Dry season
November-March · 20-30°C
Easier sea conditions and clearer access in the Bay of Bengal.
Monsoon
June-September · 25-32°C
Stormy seas and heavy rains; approach is difficult and dangerous.

Weather & Climate near Lohachara Island #

Climate
Temperature & Rainfall
Temperature Range
44°
Warmest Month
Coldest Month
Monthly Conditions

January

Weather

1.0
UV Index
Moderate
10.9h daylight

February

Weather

1.4
UV Index
High
11.3h daylight

March

Weather

1.7
UV Index
Very High
11.9h daylight

April

Weather

2.0
UV Index
Very High
12.5h daylight

May

Weather

2.0
UV Index
Very High
13.0h daylight

June

Weather

1.7
UV Index
Very High
13.3h daylight

July

Weather

1.8
UV Index
Very High
13.2h daylight

August

Weather

1.8
UV Index
Very High
12.7h daylight

September

Weather

1.8
UV Index
Very High
12.2h daylight

October

Weather

1.4
UV Index
High
11.5h daylight

November

Weather

1.1
UV Index
High
11.0h daylight

December

Weather

0.9
UV Index
Moderate
10.7h daylight

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