Coastal Waters Forecast
Issued by NWS Melbourne, FL
Issued by NWS Melbourne, FL
987 FZUS52 KMLB 180655 CWFMLB Coastal Waters Forecast for East Central Florida National Weather Service Melbourne FL 255 AM EDT Tue Aug 18 2026 Atlantic coastal waters from Flagler Beach to Jupiter Inlet out 60 nm. 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. AMZ500-181915- Synopsis for Flagler Beach to Jupiter Inlet out to 60 nm 255 AM EDT Tue Aug 18 2026 .SYNOPSIS...The Atlantic ridge axis will remain south of the local waters through this week, with generally favorable boating conditions persisting locally. Shower and storm chances increase through this week as moisture increases, with activity anticipated to move offshore from the peninsula each day. Frequent lightning strikes, wind gusts, heavy downpours, and locally higher seas will be possible near storms. .GULF STREAM HAZARDS...None. The approximate location of the west wall of the Gulf Stream based on the Real Time Ocean Forecast System as of Tuesday, August 18th, 2026. 45 nautical miles east of Ponce Inlet. 31 nautical miles east of Port Canaveral. 24 nautical miles east of Sebastian Inlet. 16 nautical miles east of Fort Pierce Inlet. 9 nautical miles east of Saint Lucie Inlet. $$ AMZ550-181915- Flagler Beach to Volusia-Brevard County Line 0-20 nm- 255 AM EDT Tue Aug 18 2026 .TODAY...West winds 5 to 10 knots, becoming southwest this afternoon. Seas 2 feet. Wave Detail: Northwest 2 feet at 3 seconds and east 2 feet at 9 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms this afternoon. .TONIGHT...West winds 5 to 10 knots. Seas 2 feet. Wave Detail: East 2 feet at 10 seconds and northwest 1 foot at 3 seconds. Mostly smooth on the intracoastal waters. .WEDNESDAY...West winds 5 to 10 knots, becoming south in the afternoon. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and northwest 1 foot at 3 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 9 seconds and southeast 1 foot at 3 seconds. Mostly smooth on the intracoastal waters. .THURSDAY...Southwest winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 4 seconds and east 1 foot at 9 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and east 1 foot at 8 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. .FRIDAY...Southwest winds around 5 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 1 to 2 feet. A moderate chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. .SATURDAY...South winds 5 to 10 knots. Seas 2 feet. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. Winds and waves higher in and near thunderstorms. $$ AMZ552-181915- Volusia-Brevard County Line to Sebastian Inlet 0-20 nm- 255 AM EDT Tue Aug 18 2026 .TODAY...West winds 5 to 10 knots, becoming south early this afternoon, becoming southwest late. Seas 1 to 2 feet. Wave Detail: West 1 foot at 3 seconds and southeast 1 foot at 3 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms this afternoon. .TONIGHT...West winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 10 seconds and southeast 1 foot at 3 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. .WEDNESDAY...West winds 5 to 10 knots, becoming south in the afternoon. Seas 1 to 2 feet. Wave Detail: East 2 feet at 9 seconds and northwest 1 foot at 3 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds around 5 knots. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and east 1 foot at 9 seconds. Smooth on the intracoastal waters. .THURSDAY...Southwest winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and east 1 foot at 9 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and east 1 foot at 8 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. .FRIDAY...Southwest winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas 2 feet. Mostly smooth on the intracoastal waters. A chance of showers with a slight chance of thunderstorms in the evening. .SATURDAY...Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 1 to 2 feet. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. Winds and waves higher in and near thunderstorms. $$ AMZ555-181915- Sebastian Inlet to Jupiter Inlet 0-20 nm- 255 AM EDT Tue Aug 18 2026 .TODAY...Northwest winds 5 to 10 knots, becoming east early this afternoon, becoming south late. Seas 1 to 2 feet. Wave Detail: Northwest 1 foot at 3 seconds and southeast 1 foot at 3 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms this afternoon. .TONIGHT...West winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Northwest 1 foot at 2 seconds and southeast 1 foot at 3 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. .WEDNESDAY...West winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave Detail: Northwest 1 foot at 2 seconds and southeast 1 foot at 3 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...South winds around 5 knots. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and northeast 1 foot at 8 seconds. Smooth on the intracoastal waters. .THURSDAY...South winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and northeast 1 foot at 8 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and northeast 1 foot at 8 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. .FRIDAY...Southwest winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 to 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. .SATURDAY...Southwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 1 to 2 feet. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms in the evening. Winds and waves higher in and near thunderstorms. $$ AMZ570-181915- Flagler Beach to Volusia-Brevard County Line 20-60 nm- 255 AM EDT Tue Aug 18 2026 .TODAY...West winds 10 to 15 knots, becoming southwest 5 to 10 knots late this morning and afternoon. Seas 2 to 3 feet. Wave Detail: West 3 feet at 4 seconds and east 2 feet at 9 seconds. A slight chance of showers and thunderstorms this afternoon. .TONIGHT...West winds around 10 knots. Seas 2 to 3 feet. Wave Detail: West 2 feet at 4 seconds and east 2 feet at 10 seconds. .WEDNESDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 3 seconds and east 2 feet at 9 seconds. A slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and south 1 foot at 3 seconds. .THURSDAY...Southwest winds around 5 knots, becoming south in the afternoon. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and northwest 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and south 1 foot at 3 seconds. A slight chance of showers and thunderstorms after midnight. .FRIDAY...Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 feet. A slight chance of showers and thunderstorms. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight. .SATURDAY...Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 feet. A slight chance of showers and thunderstorms. .SATURDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ AMZ572-181915- Volusia-Brevard County Line to Sebastian Inlet 20-60 nm- 255 AM EDT Tue Aug 18 2026 .TODAY...West winds 10 to 15 knots, diminishing to 5 to 10 knots late this morning and early afternoon, becoming southwest late. Seas 2 to 3 feet. Wave Detail: Northwest 3 feet at 4 seconds and east 2 feet at 10 seconds. A slight chance of showers and thunderstorms this afternoon. .TONIGHT...West winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 4 seconds and east 2 feet at 10 seconds. .WEDNESDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 4 seconds and east 2 feet at 9 seconds. A slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and south 1 foot at 3 seconds. .THURSDAY...Southwest winds around 5 knots, becoming south in the afternoon. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and southeast 1 foot at 3 seconds. .THURSDAY NIGHT...South winds around 10 knots. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and south 1 foot at 3 seconds. A slight chance of showers and thunderstorms. .FRIDAY...Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 feet. A slight chance of showers and thunderstorms. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 feet. A chance of showers and thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight. .SATURDAY...Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 feet. A slight chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ AMZ575-181915- Sebastian Inlet to Jupiter Inlet 20-60 nm- 255 AM EDT Tue Aug 18 2026 .TODAY...West winds 10 to 15 knots, diminishing to 5 to 10 knots early this afternoon, becoming southwest late. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 4 seconds and east 2 feet at 4 seconds. .TONIGHT...West winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: North 2 feet at 5 seconds and east 1 foot at 9 seconds. A slight chance of showers and thunderstorms in the evening. .WEDNESDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds and northwest 2 feet at 5 seconds. .WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas 2 feet. Wave Detail: Southeast 2 feet at 4 seconds and northwest 1 foot at 3 seconds. .THURSDAY...South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and north 1 foot at 4 seconds. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: South 1 foot at 4 seconds and east 1 foot at 8 seconds. A slight chance of showers and thunderstorms. .FRIDAY...Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas 1 to 2 feet. A chance of showers and thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight. .SATURDAY...Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 1 to 2 feet. A slight chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...South winds 10 to 15 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$