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Chandeleur Islands

Island

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.

Chandeleur Islands New OrleansBaton Rouge, LouisianaShreveport, LouisianaLafayette, LouisianaMetairie, LouisianaNatchitochesChandeleur Islands
In this guide

Chandeleur Islands essentials

Country: United States
Driest months: Oct-Dec
Pay in: Dollar ($)
Language: English

Chandeleur Islands at a Glance

About Chandeleur Islands

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.
When to Go

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.

Late spring-early autumn
May-September · 22-30°C (air)
Calmer seas, better boating conditions and peak visibility for birdlife and marine mammals.
Winter
December-February · 5-15°C (air)
Stormier seas and shifting sands; islands can be entirely reshaped by hurricanes and winter storms.

Weather & Climate near Chandeleur Islands

Climate

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.

Air Quality: AQI 25 Good
Temperature & Rainfall
Temperature Range
32°
Warmest Month
9°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - 9° - 16° 13° 135 mm - - 5.0 m/s - -
February - 10° - 17° 14° 122 mm - - 5.0 m/s - -
March - 13° - 20° 17° 129 mm - - 4.9 m/s - -
April - 17° - 23° 20° 102 mm - - 4.8 m/s - -
May - 21° - 27° 24° 122 mm - - 4.2 m/s - -
June - 24° - 30° 27° 116 mm - - 3.6 m/s - -
July - 25° - 32° 28° 167 mm - - 3.3 m/s - -
August - 25° - 32° 28° 180 mm - - 3.2 m/s - -
September - 23° - 30° 27° 157 mm - - 4.0 m/s - -
October - 19° - 26° 23° 89 mm - - 4.5 m/s - -
November - 15° - 22° 18° 112 mm - - 4.7 m/s - -
December - 11° - 18° 15° 122 mm - - 4.9 m/s - -
Getting There & Around

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.