Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
431 FZUS54 KLCH 070809 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 308 AM CDT Mon Sep 7 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. GMZ400-072100- 308 AM CDT Mon Sep 7 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... Low onshore winds and seas can be expected over the period as weak, broad high pressure sits just inland. A tropical airmass in place combined with a series of weak waves moving east to west over the north Gulf will bring about daily shower and thunderstorm chances. $$ GMZ430-072100- Sabine Lake- 308 AM CDT Mon Sep 7 2026 .TODAY...Northwest winds around 5 knots, becoming southwest this afternoon. Lake waters smooth. A slight chance of showers and thunderstorms late. .TONIGHT...Southwest winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms in the evening. .TUESDAY...Northwest winds around 5 knots, becoming south in the afternoon. Lake waters smooth. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds around 5 knots. Lake waters smooth. Showers likely with a chance of thunderstorms. .WEDNESDAY NIGHT...South winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms after midnight. .THURSDAY...Light and variable winds, becoming south around 5 knots in the afternoon. Lake waters smooth. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. .THURSDAY NIGHT...Southwest winds around 5 knots. Lake waters smooth. .FRIDAY...West winds around 5 knots, becoming southwest in the afternoon. Lake waters light chop. A chance of showers and thunderstorms. .FRIDAY NIGHT...South winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ432-072100- Calcasieu Lake- 308 AM CDT Mon Sep 7 2026 .TODAY...Northwest winds around 5 knots, becoming southwest late. Lake waters smooth. A slight chance of showers and thunderstorms late this morning. A slight chance of showers and thunderstorms late. .TONIGHT...Southwest winds 5 to 10 knots, becoming west after midnight. Lake waters light chop. .TUESDAY...Northwest winds around 5 knots, becoming south around 5 knots in the afternoon. Lake waters smooth. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds around 5 knots. Lake waters smooth. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. .WEDNESDAY NIGHT...South winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms after midnight. .THURSDAY...Northwest winds around 5 knots, becoming southwest around 5 knots in the afternoon. Lake waters smooth. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. .THURSDAY NIGHT...Southwest winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms after midnight. .FRIDAY...Southwest winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ435-072100- Vermilion and West Cote Blanche Bays- 308 AM CDT Mon Sep 7 2026 .TODAY...West winds around 5 knots, becoming southwest around 5 knots late. Bay waters smooth. A slight chance of showers and thunderstorms late this morning. A chance of showers and thunderstorms this afternoon. .TONIGHT...West winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms in the evening. .TUESDAY...North winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and thunderstorms. .TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms. .WEDNESDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .WEDNESDAY NIGHT...Southeast winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms after midnight. .THURSDAY...West winds around 5 knots. Bay waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .FRIDAY...West winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ436-072100- Atchafalaya and East Cote Blanche Bays- 308 AM CDT Mon Sep 7 2026 .TODAY...Northwest winds around 5 knots, becoming southwest late. Bay waters smooth. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. .TONIGHT...West winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms in the evening. .TUESDAY...North winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .TUESDAY NIGHT...East winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. .WEDNESDAY NIGHT...Southeast winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...Southwest winds around 5 knots. Bay waters smooth. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms after midnight. .FRIDAY...West winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ450-072100- Coastal waters from Cameron LA to High Island TX out 20 NM- 308 AM CDT Mon Sep 7 2026 .TODAY...West winds 5 to 10 knots, diminishing to around 5 knots early this afternoon, then becoming southwest late. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds. A slight chance of showers and thunderstorms this morning. .TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. .TUESDAY...Northwest winds around 5 knots, becoming south in the afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers and thunderstorms. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A chance of showers with a slight chance of thunderstorms after midnight. .WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A chance of showers and thunderstorms after midnight. .THURSDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A slight chance of showers and thunderstorms after midnight. .FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms, mainly in the morning. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ452-072100- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 308 AM CDT Mon Sep 7 2026 .TODAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. A slight chance of showers and thunderstorms. .TONIGHT...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds. .TUESDAY...Northwest winds around 5 knots, becoming south around 5 knots in the afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers and thunderstorms. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A chance of showers and thunderstorms after midnight. .THURSDAY...West winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A chance of showers and thunderstorms after midnight. .FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A chance of showers and thunderstorms. .FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ455-072100- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 308 AM CDT Mon Sep 7 2026 .TODAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. A slight chance of showers and thunderstorms. .TONIGHT...West winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds. A slight chance of showers and thunderstorms after midnight. .TUESDAY...North winds around 5 knots, becoming east around 5 knots in the afternoon. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds 5 to 10 knots, diminishing to around 5 knots in the afternoon. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. Showers likely with a chance of thunderstorms. .WEDNESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...West winds around 5 knots. Seas 1 foot or less. Showers likely with a chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms after midnight. .FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ470-072100- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 308 AM CDT Mon Sep 7 2026 .TODAY...West winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A slight chance of showers and thunderstorms late this morning. .TONIGHT...Southwest winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. .TUESDAY...West winds around 5 knots, becoming east in the afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A chance of showers and thunderstorms, mainly in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A chance of showers with a slight chance of thunderstorms after midnight. .WEDNESDAY...East winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 5 seconds. Showers likely with a chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at 6 seconds. A chance of showers and thunderstorms after midnight. .THURSDAY...Southwest winds around 5 knots. Seas 1 foot or less. A chance of showers and thunderstorms, mainly in the morning. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. .FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms, mainly in the morning. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ472-072100- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 308 AM CDT Mon Sep 7 2026 .TODAY...West winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. A slight chance of showers and thunderstorms late this morning. .TONIGHT...Southwest winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. .TUESDAY...Northwest winds around 5 knots, becoming northeast around 5 knots in the afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds. A chance of showers and thunderstorms, mainly in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 2 seconds and south 1 foot at 5 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 6 seconds. A chance of showers and thunderstorms after midnight. .THURSDAY...West winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A slight chance of showers and thunderstorms after midnight. .FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A chance of showers and thunderstorms, mainly in the morning. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ475-072100- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 308 AM CDT Mon Sep 7 2026 .TODAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. A slight chance of showers and thunderstorms until late afternoon. .TONIGHT...West winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. .TUESDAY...Northwest winds around 5 knots, becoming northeast around 5 knots in the afternoon. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds and south 1 foot at 5 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 2 seconds and south 1 foot at 5 seconds. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .WEDNESDAY...East winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 4 seconds. A chance of thunderstorms. Showers. .WEDNESDAY NIGHT...Southeast winds around 5 knots, becoming south after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A chance of showers and thunderstorms after midnight. .THURSDAY...West winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms after midnight. .FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A slight chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$