Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
348 FZUS54 KLCH 291736 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 1235 PM CDT Mon Sep 29 2025 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. GMZ400-300600- 1235 PM CDT Mon Sep 29 2025 .Synopsis for Lower Atchafalaya River LA to High Island TX out 60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote Blanche Bays... Surface high pressure ridging down into the coastal waters through mid week will keep a light to occasionally modest offshore flow to go along with mainly low seas. By the end of the week, the surface high will be ridging down from the Mid-Atlantic area, producing more of an easterly flow. No significant chance of shower activity is noted through mid week, with shower activity increasing toward the end of the week with an upper level disturbance developing over the northern Gulf. $$ GMZ430-300600- Sabine Lake- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...West winds around 5 knots, becoming north after midnight. Lake waters smooth. .TUESDAY...Northeast winds around 5 knots. Lake waters smooth. .TUESDAY NIGHT...North winds around 5 knots. Lake waters smooth. .WEDNESDAY...Northeast winds around 5 knots. Lake waters smooth. .WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Lake waters smooth. .THURSDAY...North winds around 5 knots, becoming east in the afternoon. Lake waters smooth. .THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers. .FRIDAY...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. .FRIDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop. A chance of showers with a slight chance of thunderstorms early in the evening. .SATURDAY...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers in the afternoon. .SATURDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers. Winds and waves higher in and near thunderstorms. $$ GMZ432-300600- Calcasieu Lake- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...West winds around 5 knots, becoming north after midnight. Lake waters smooth. .TUESDAY...North winds around 5 knots. Lake waters smooth. .TUESDAY NIGHT...North winds around 5 knots. Lake waters smooth. .WEDNESDAY...North winds around 5 knots. Lake waters smooth. .WEDNESDAY NIGHT...West winds around 5 knots, becoming north after midnight. Lake waters smooth. .THURSDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Lake waters smooth. A slight chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop. A slight chance of thunderstorms early in the evening. A slight chance of showers. .FRIDAY...East winds around 10 knots. Lake waters light chop. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. .FRIDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop. A chance of showers with a slight chance of thunderstorms early in the evening. .SATURDAY...East winds around 10 knots. Lake waters light chop. A slight chance of showers in the afternoon. .SATURDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers. Winds and waves higher in and near thunderstorms. $$ GMZ435-300600- Vermilion and West Cote Blanche Bays- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Bay waters smooth. .TUESDAY...North winds around 5 knots. Bay waters smooth. .TUESDAY NIGHT...North winds around 5 knots. Bay waters smooth. .WEDNESDAY...North winds 5 to 10 knots, becoming northwest in the afternoon. Bay waters light chop. .WEDNESDAY NIGHT...South winds around 5 knots, becoming southeast after midnight. Bay waters smooth. .THURSDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Bay waters choppy. A chance of showers and thunderstorms, mainly in the evening. .FRIDAY...East winds 10 to 15 knots. Bay waters choppy. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. .FRIDAY NIGHT...East winds 10 to 15 knots. Bay waters choppy. A chance of showers with a slight chance of thunderstorms early in the evening, then a slight chance of showers in the late evening and overnight. .SATURDAY...East winds 10 to 15 knots. Bay waters choppy. A slight chance of showers early in the morning. A chance of showers with a slight chance of thunderstorms in the afternoon. .SATURDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Bay waters choppy. A chance of showers with a slight chance of thunderstorms early in the evening, then a slight chance of showers in the late evening and overnight. Winds and waves higher in and near thunderstorms. $$ GMZ436-300600- Atchafalaya and East Cote Blanche Bays- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...South winds around 5 knots, becoming northwest after midnight. Bay waters smooth. .TUESDAY...North winds around 5 knots. Bay waters smooth. .TUESDAY NIGHT...North winds around 5 knots. Bay waters smooth. .WEDNESDAY...North winds around 5 knots, becoming northwest around 5 knots in the afternoon. Bay waters smooth. .WEDNESDAY NIGHT...South winds around 5 knots, becoming east after midnight. Bay waters smooth. .THURSDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. .FRIDAY...East winds 10 to 15 knots. Bay waters choppy. A chance of showers. A slight chance of thunderstorms in the afternoon. .FRIDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Bay waters choppy. A slight chance of thunderstorms early in the evening. A chance of showers until early morning, then a slight chance of showers late. .SATURDAY...East winds 10 to 15 knots. Bay waters choppy. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. .SATURDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop. A slight chance of thunderstorms early in the evening. A chance of showers. Winds and waves higher in and near thunderstorms. $$ GMZ450-300600- Coastal waters from Cameron LA to High Island TX out 20 NM- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...Southwest winds around 5 knots, becoming north after midnight. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 5 seconds. .TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 2 seconds and northeast 1 foot at 5 seconds. .TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. .WEDNESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds. .WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. .THURSDAY...North winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at 3 seconds. .THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming east 10 to 15 knots after midnight. Seas around 2 feet. A chance of showers. .FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. A slight chance of thunderstorms in the afternoon. .FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers with a slight chance of thunderstorms early in the evening, then a slight chance of showers in the late evening and overnight. .SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers. .SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ452-300600- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...West winds around 5 knots, becoming north after midnight. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 5 seconds. .TUESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds. .TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds. .WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 3 seconds. .WEDNESDAY NIGHT...West winds around 5 knots, becoming northeast after midnight. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds and east 1 foot at 2 seconds. .THURSDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers with a slight chance of thunderstorms in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of thunderstorms until early morning. A chance of showers. .FRIDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. A chance of showers. A slight chance of thunderstorms in the afternoon. .FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. A slight chance of thunderstorms early in the evening. A chance of showers until early morning, then a slight chance of showers late. .SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. A slight chance of thunderstorms late. .SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ455-300600- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...South winds around 5 knots, becoming northwest after midnight. Seas 1 foot or less. .TUESDAY...North winds around 5 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. .TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. .WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 2 seconds. .WEDNESDAY NIGHT...South winds around 5 knots, becoming southeast after midnight. Seas 1 foot or less. A slight chance of showers after midnight. A slight chance of showers and thunderstorms late. .THURSDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds. A slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms. .FRIDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. .FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. A slight chance of thunderstorms early in the evening. A chance of showers. .SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. A slight chance of thunderstorms in the afternoon. .SATURDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet. A slight chance of thunderstorms early in the evening. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ470-300600- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. .TUESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Northeast 2 feet at 5 seconds. .TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 4 seconds. .WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 3 seconds. .WEDNESDAY NIGHT...South winds around 5 knots, becoming northwest after midnight. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds. .THURSDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: Northeast 2 feet at 3 seconds. A slight chance of showers in the late morning and afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. A slight chance of thunderstorms after midnight. .FRIDAY...East winds around 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. A slight chance of thunderstorms. Showers likely, mainly in the morning. .FRIDAY NIGHT...East winds around 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. A slight chance of thunderstorms early in the evening. A chance of showers. .SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. A chance of showers. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ472-300600- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...East winds around 5 knots, becoming north after midnight. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. .TUESDAY...North winds 5 to 10 knots. Seas around 2 feet. Wave Detail: North 1 foot at 2 seconds and northeast 1 foot at 5 seconds. .TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southeast 1 foot at 4 seconds. .WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 3 seconds. .WEDNESDAY NIGHT...Northwest winds around 5 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds and northwest 1 foot at 3 seconds. A slight chance of showers after midnight. .THURSDAY...East winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: East 2 feet at 4 seconds. A slight chance of showers in the morning. A slight chance of thunderstorms in the late morning and afternoon. A chance of showers in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. Showers likely with a slight chance of thunderstorms. .FRIDAY...East winds 15 to 20 knots. Seas 3 to 4 feet. Showers likely with a slight chance of thunderstorms. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Showers likely with a slight chance of thunderstorms early in the evening, then a chance of showers in the late evening and overnight. .SATURDAY...East winds around 15 knots with gusts up to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. A chance of showers. A slight chance of thunderstorms late. .SATURDAY NIGHT...East winds around 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ475-300600- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 1235 PM CDT Mon Sep 29 2025 .TONIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. .TUESDAY...North winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Northeast 1 foot at 4 seconds. .TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and east 1 foot at 4 seconds. .WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 3 seconds. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 4 seconds. A slight chance of showers until early morning, then a chance of showers with a slight chance of thunderstorms late. .THURSDAY...Northeast winds 5 to 10 knots, becoming east 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 3 seconds. A slight chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 4 feet. A slight chance of thunderstorms. Showers. .FRIDAY...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Showers likely. A slight chance of thunderstorms until late afternoon, then a chance of thunderstorms late. .FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Showers likely with a slight chance of thunderstorms. .SATURDAY...East winds around 15 knots with gusts up to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Showers likely with a slight chance of thunderstorms. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. A slight chance of thunderstorms early in the evening. Showers likely. Winds and seas higher in and near thunderstorms. $$