Chandeleur Islands
Island Barrier islands off Louisiana, fragile coastal chain
A remote barrier-island chain in the northern Gulf of Mexico, the Chandeleur Islands draw birders, anglers and boaters for seabird colonies, fishing grounds and exposed sandbars.
The Chandeleur Islands are a narrow chain of low-lying barrier islands off the coast of Louisiana in the Gulf of Mexico, noted for their role as barrier beaches and bird habitat.
The island chain is formed and continually reshaped by sediments carried from the Mississippi River and by coastal processes. The Chandeleurs have been heavily eroded and altered by major hurricanes and storms in recent decades, which have reduced island area and changed island configuration.
The islands lie offshore of southeastern Louisiana in the northern Gulf of Mexico, extending northeast from the Mississippi delta; access is by boat or air from the Louisiana coast.
- Protection status: Managed as part of the Breton National Wildlife Refuge and an important nesting area for seabirds and shorebirds.
- Access: No visitor facilities are present; islands are remote and visited only by private boat or expedition vessels.
How to Get to Chandeleur Islands #
Access requires a seaworthy vessel and an experienced captain; charters operate from New Orleans, Grand Isle, or Venice, Louisiana. The islands lie roughly 50-100 miles offshore depending on the landing site and are exposed to Gulf weather; check marine forecasts and NOAA navigation advisories.
Tips for Visiting Chandeleur Islands #
- Charter an experienced local captain from Venice Marina or Grand Isle; the sandbars shift and charts are often out of date.
- Bring protective clothing and sunscreen - the islands are exposed and there is minimal shade.
- Respect nesting seasons for shorebirds; some parts are seasonal wildlife sanctuaries with restricted landings.
Best Time to Visit Chandeleur Islands #
Visit between late spring and early autumn for safer boating and wildlife viewing; winter storms dramatically alter the islands.
Weather & Climate near Chandeleur Islands #
Subtropical climate with hot summers (peaking in July) and cool winters (coldest in January). Temperatures range from 9°C to 32°C. Abundant rainfall (1553 mm/year), wettest in August.
January
January is the coolest month with highs of 16°C and lows of 9°C. Significant rainfall (135 mm).
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February
February is cool with highs of 17°C and lows of 10°C. Significant rainfall (122 mm).
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March
March is cool with highs of 20°C and lows of 13°C. Significant rainfall (129 mm).
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April
April is mild with highs of 23°C and lows of 17°C. Significant rainfall (102 mm).
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May
May is mild with highs of 27°C and lows of 21°C. Significant rainfall (122 mm).
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June
June is warm with highs of 30°C and lows of 24°C. Significant rainfall (116 mm).
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July
July is the hottest month with highs of 32°C and lows of 25°C. Significant rainfall (167 mm).
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August
August is hot with highs of 32°C and lows of 25°C. The wettest month with heavy rain (180 mm).
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September
September is warm with highs of 30°C and lows of 23°C. Significant rainfall (157 mm).
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October
October is mild with highs of 26°C and lows of 19°C. Regular rainfall (89 mm).
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November
November is mild with highs of 22°C and lows of 14°C. Significant rainfall (112 mm).
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December
December is cool with highs of 18°C and lows of 11°C. Significant rainfall (122 mm).
