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Coastal Waters Forecast
National Weather Service Lake Charles LA
309 AM CDT Fri Sep 18 2026

Coastal waters from the Lower Atchafalaya River LA to High
Island TX out 60 nautical miles including Sabine and
Calcasieu Lakes and Vermilion and Cote Blanche Bays

Seas are provided as a range of the average height of the
highest one third of the waves, along with the occasional
height of the average highest ten percent of the waves.

GMZ400-182100-
309 AM CDT Fri Sep 18 2026

.Synopsis for Lower Atchafalaya River LA to High Island TX out
60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote
Blanche Bays...

The pressure gradient over the region will continue to relax, with
winds and seas following suit. Thanks to drier air and high
pressure aloft, chances for showers and storms will be minimal
over the waters through the next few days.

$$

GMZ430-182100-
Sabine Lake-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...Southeast winds around 5 knots. Lake waters smooth.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Lake waters light chop.
.SUNDAY...Southeast winds around 5 knots. Lake waters smooth.
.SUNDAY NIGHT...South winds around 5 knots. Lake waters smooth.
.MONDAY...Light and variable winds, becoming southeast around
5 knots in the afternoon. Lake waters smooth.
.MONDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.TUESDAY...North winds around 5 knots, becoming east in the
afternoon. Lake waters smooth.
.TUESDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth.

$$

GMZ432-182100-
Calcasieu Lake-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...Southeast winds 5 to 10 knots, diminishing to around
5 knots after midnight. Lake waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Lake waters light chop.
.SATURDAY NIGHT...South winds 5 to 10 knots, becoming southeast
after midnight. Lake waters light chop.
.SUNDAY...East winds around 5 knots, becoming southeast in the
afternoon. Lake waters light chop.
.SUNDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop.
.MONDAY...Southeast winds around 5 knots. Lake waters smooth.
.MONDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.TUESDAY...North winds around 5 knots, becoming east in the
afternoon. Lake waters smooth.
.TUESDAY NIGHT...South winds around 5 knots, becoming east after
midnight. Lake waters smooth.

$$

GMZ435-182100-
Vermilion and West Cote Blanche Bays-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds 5 to 10 knots. Bay waters light chop.
.TONIGHT...Southeast winds 5 to 10 knots. Bay waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...East winds around 5 knots, becoming southeast in the
afternoon. Bay waters light chop.
.SUNDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop.
.MONDAY...North winds around 5 knots, becoming southeast around
5 knots in the afternoon. Bay waters smooth. A slight chance of
showers and thunderstorms.
.MONDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.TUESDAY...North winds around 5 knots, becoming southeast around
5 knots in the afternoon. Bay waters smooth. A slight chance of
showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-182100-
Atchafalaya and East Cote Blanche Bays-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds 5 to 10 knots. Bay waters light chop.
.TONIGHT...East winds 5 to 10 knots. Bay waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Bay waters light chop.
.SUNDAY...East winds around 5 knots, becoming southeast in the
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.MONDAY...Northeast winds around 5 knots, becoming east around
5 knots in the afternoon. Bay waters smooth. A slight chance of
showers and thunderstorms in the morning, then a chance of
showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.
.TUESDAY...Northeast winds around 5 knots, becoming east around
5 knots in the afternoon. Bay waters smooth. A chance of showers
and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-182100-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 4 seconds.
.TONIGHT...Southeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southeast 2 feet
at 4 seconds, becoming southeast 1 foot at 5 seconds. A slight
chance of showers in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 1 foot at 5 seconds.
.MONDAY...Southeast winds 5 to 10 knots, diminishing to around
5 knots in the afternoon. Seas 1 foot or less. A slight chance of
showers and thunderstorms in the morning.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
.TUESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-182100-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 4 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 3 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 3 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 3 seconds and southeast
1 foot at 6 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southeast 1 foot
at 4 seconds, becoming southeast 1 foot at 5 seconds.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 5 seconds.
.MONDAY...Southeast winds around 5 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms.
.MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
.TUESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-182100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots late. Seas 1 to 2 feet. Wave Detail:
East 2 feet at 3 seconds.
.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 3 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 2 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds.
.SUNDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 3 seconds.
.SUNDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds.
.MONDAY...East winds around 5 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.
.TUESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A slight chance of showers and
thunderstorms.
.TUESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-182100-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds around 15 knots with gusts up to 20 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East
5 feet at 7 seconds.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 4 feet. Wave Detail: East 4 feet at 7 seconds.
.SATURDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.SUNDAY...Southeast winds around 5 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 6 seconds. A slight chance of
showers and thunderstorms in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.MONDAY...Southeast winds around 5 knots. Seas around 2 feet in
the morning, then 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.MONDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.
.TUESDAY...East winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-182100-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds.
.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: East 4 feet at 7 seconds.
.SATURDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds.
.SUNDAY...Southeast winds around 5 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.MONDAY...East winds around 5 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the morning.
.MONDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-182100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 AM CDT Fri Sep 18 2026

.TODAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots
late. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East
5 feet at 7 seconds. A slight chance of showers early this
morning.
.TONIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: East 5 feet at 7 seconds.
.SATURDAY...East winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots, becoming southeast
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds.
.SUNDAY...East winds around 5 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds around 5 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight
chance of showers and thunderstorms after midnight.
.MONDAY...East winds 5 to 10 knots. Seas 1 foot or less. A chance
of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet in the afternoon. A slight chance of showers
and thunderstorms.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$