How warm is the Louisiana coast in September?

Typical highs are about 84°F and the sea is about 85°F. That is warm enough for long swims without a wetsuit.

Is September hurricane season in the Louisiana coast?

September falls in the tropical storm season; the typical risk on a given day is high. It peaks in September. Travel insurance and flexible bookings help.

How crowded is the Louisiana coast in September?

Typically moderate, around Labor Day weekend and Mexican Independence Day. The quietest months are usually January and February.

The Louisiana coast in September

September is a middling month for the Louisiana coast: a typical day grades B, the 9th best of the 12 months. Expect highs near 84°F, water around 85°F and about a 45% chance of rain on a given day. Beaches are typically moderate (Labor Day weekend and Mexican Independence Day). It is hurricane season, with high storm risk.

Typical dayB9th of 12 months

Highs / water84°FSea 85°F

Rain chance45%on a given day

Waves2.2 fttypical

CrowdsModerateLabor Day weekend

Storm riskHighhurricane season

The Louisiana coast month by month

Typical grade and high for each month. Higher is better: A+ to F.

August: A- · September: B · October: A-. The best months are usually May, June and October, and the weakest are January and February.

Best beaches in the Louisiana coast in September

Resorts with the best typical September, and their grades for the next few days.

Beach	Typical Sep	This week
Grand Isle Beach Rentals	B	SatBSunBMonA-TueA-WedB+

Grades for the next few days from Veabird's beach forecast, updated Oct 3, 18:00 UTC. Higher is better: A+ to F.

Better beach options in September

Elsewhere in Florida & the Gulf Coast, South Padre & the Coastal Bend (B+), Galveston & the Upper Texas Coast (B+) and the Alabama & Mississippi coast (B+) usually grade higher in September. Further afield: Maui (A), Oʻahu (A) and Kauaʻi (A). Every destination in September.

Questions

Is September a good time to visit the Louisiana coast?: September is a middling month for the Louisiana coast: a typical day grades B, the 9th best of the 12 months. Expect highs near 84°F, water around 85°F and about a 45% chance of rain on a given day. Beaches are typically moderate (Labor Day weekend and Mexican Independence Day). It is hurricane season, with high storm risk.
How warm is the Louisiana coast in September?: Typical highs are about 84°F and the sea is about 85°F. That is warm enough for long swims without a wetsuit.
Is September hurricane season in the Louisiana coast?: September falls in the tropical storm season; the typical risk on a given day is high. It peaks in September. Travel insurance and flexible bookings help.
How crowded is the Louisiana coast in September?: Typically moderate, around Labor Day weekend and Mexican Independence Day. The quietest months are usually January and February.

Plan it

Louisiana Coast: this week's forecast, beach by beach
Sargassum Report: this week, updated every Monday
Compare dates and beaches on the map

Typical-month numbers from Veabird's year-ahead outlook for the 1 resorts here (median resort): 6 years of ERA5 climate normals, the seasonal pattern of the Atlantic sargassum belt, holiday crowd calendars and historical storm tracks. Any given year can differ; check the 16-day forecast before you go.