


Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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646 FZUS52 KCHS 151752 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 152 PM EDT Sun Jun 15 2025 South Santee River SC to Savannah GA out 20 NM and Savannah GA to Altamaha Sound GA out 60 NM, including Charleston Harbor and Grays Reef National Marine Sanctuary AMZ300-160700- 152 PM EDT Sun Jun 15 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... Atlantic high pressure will continue to build across the Southeast through the week. A cold front could move through Friday. $$ AMZ330-160700- Charleston Harbor- 152 PM EDT Sun Jun 15 2025 .TONIGHT...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to 5 to 10 kt after midnight. A slight chance of showers and tstms this evening. .MON...SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts to 20 kt in the afternoon. A chance of showers. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .MON NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. A chance of showers and tstms. .TUE...SW winds 10 to 15 kt. Gusts to 25 kt in the afternoon. A chance of showers and tstms. .TUE NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. A slight chance of showers and tstms. .WED...SW winds 10 to 15 kt. A slight chance of showers and tstms. .WED NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. A slight chance of showers and tstms in the evening. .THU...SW winds 10 to 15 kt. A slight chance of showers and tstms. .THU NIGHT...SW winds 10 to 15 kt. A chance of showers and tstms. .FRI...SW winds 10 to 15 kt. A chance of showers and tstms. .FRI NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms. Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 81 degrees. $$ AMZ350-160700- Waters from South Santee River to Edisto Beach SC out 20 NM- 152 PM EDT Sun Jun 15 2025 .TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 9 seconds. .MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. A chance of showers. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .MON NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers and tstms. .TUE...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. A chance of showers and tstms. .TUE NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 7 seconds. A slight chance of showers and tstms. .WED...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 7 seconds. A slight chance of showers and tstms. .WED NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. .THU...SW winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers and tstms. .THU NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers and tstms. .FRI...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers and tstms. .FRI NIGHT...SW winds 10 kt. Seas 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ352-160700- Waters from Edisto Beach SC to Savannah GA out 20 NM- 152 PM EDT Sun Jun 15 2025 .TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 4 ft at 8 seconds. A slight chance of showers and tstms this evening. .MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. A chance of showers. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .MON NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at 4 seconds and SE 3 ft at 8 seconds. A chance of showers and tstms. .TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers with a slight chance of tstms. .TUE NIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers and tstms. .WED...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 1 foot at 8 seconds. A slight chance of showers and tstms. .WED NIGHT...S winds 10 to 15 kt. Seas 3 ft. .THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .THU NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and tstms. .FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ354-160700- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 152 PM EDT Sun Jun 15 2025 .TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 9 seconds. A slight chance of showers and tstms this evening. .MON...SW winds 10 kt, becoming S in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. A chance of showers. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .MON NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. A chance of showers and tstms. .TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers. A slight chance of tstms in the morning, then a chance of tstms in the afternoon. .TUE NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. A chance of showers and tstms, mainly in the evening. .WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 8 seconds. A slight chance of showers and tstms. .WED NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. A slight chance of showers and tstms in the evening. .THU...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of showers and tstms. .THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. .FRI...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. .FRI NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$ AMZ374-160700- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 152 PM EDT Sun Jun 15 2025 .TONIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 9 seconds. A slight chance of showers and tstms after midnight. .MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds. A chance of showers with a slight chance of tstms. .MON NIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. A chance of showers and tstms. .TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A chance of showers with a slight chance of tstms. .TUE NIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds. A slight chance of showers and tstms. .WED...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds. A slight chance of showers and tstms. .WED NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. A slight chance of showers and tstms after midnight. .THU...SW winds 10 to 15 kt. Seas 3 ft. A slight chance of showers and tstms. .THU NIGHT...S winds 10 to 15 kt. Seas 3 ft. A chance of showers with a slight chance of tstms. .FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers and tstms. .FRI NIGHT...SW winds 10 kt. Seas 3 to 4 ft. A chance of showers and tstms. Winds and seas higher in and near tstms. $$