Coastal Waters Forecast
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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523 FZUS52 KCHS 151804 CWFCHS Coastal Waters Forecast National Weather Service Charleston SC 104 PM EST Sat Nov 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- 104 PM EST Sat Nov 15 2025 .Synopsis for the coastal waters of south coastal South Carolina and north coastal Georgia... High pressure will remain the primary feature through the weekend. A dry cold front will move through the area Sunday night before high pressure returns early next week. $$ AMZ330-160700- Charleston Harbor- 104 PM EST Sat Nov 15 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds 10 kt. .TONIGHT...SW winds 10 to 15 kt with gusts to 25 kt. .SUN...W winds 10 to 15 kt with gusts to 25 kt. .SUN NIGHT...NW winds 5 to 10 kt, becoming N after midnight. .MON...NE winds 5 to 10 kt. .MON NIGHT...NE winds 5 kt. .TUE...E winds 5 kt. .TUE NIGHT...S winds 5 kt. .WED...SW winds 5 to 10 kt. .WED NIGHT...SW winds 5 kt. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 61 degrees. $$ AMZ350-160700- Waters from South Santee River to Edisto Beach SC out 20 NM- 104 PM EST Sat Nov 15 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM EST THIS EVENING THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...SW winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft. Wave Detail: SW 3 ft at 4 seconds and NE 1 foot at 4 seconds. .TONIGHT...SW winds 15 to 20 kt, increasing to 20 to 25 kt after midnight. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SW 4 ft at 5 seconds and NE 1 foot at 4 seconds, becoming SW 5 ft at 6 seconds and SE 1 foot at 9 seconds. .SUN...W winds 20 to 25 kt, becoming SW 15 to 20 kt in the afternoon. Seas 4 to 6 ft, subsiding to 4 to 5 ft in the afternoon. Wave Detail: SW 5 ft at 6 seconds and SE 1 foot at 9 seconds. .SUN NIGHT...W winds 10 to 15 kt, becoming N after midnight. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: SW 4 ft at 6 seconds and SE 1 foot at 9 seconds, becoming NW 3 ft at 6 seconds and SE 1 foot at 9 seconds. .MON...N winds 10 to 15 kt, becoming NE 5 to 10 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SW 2 ft at 5 seconds. .MON NIGHT...NE winds 5 kt. Seas 2 ft. Wave Detail: NE 2 ft at 5 seconds and S 1 foot at 5 seconds. .TUE...E winds 5 kt. Seas 2 ft. .TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft. .WED...SW winds 5 to 10 kt. Seas 2 ft. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft. $$ AMZ352-160700- Waters from Edisto Beach SC to Savannah GA out 20 NM- 104 PM EST Sat Nov 15 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING THROUGH SUNDAY MORNING... .THIS AFTERNOON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at 3 seconds and NE 1 foot at 4 seconds. .TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and NE 1 foot at 5 seconds, becoming SW 4 ft at 5 seconds and NE 1 foot at 5 seconds. .SUN...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 9 seconds. .SUN NIGHT...W winds 10 to 15 kt, becoming N after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at 5 seconds and SE 1 foot at 9 seconds. .MON...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 ft. Wave Detail: N 2 ft at 3 seconds and SW 2 ft at 5 seconds. .MON NIGHT...E winds 5 kt. Seas 2 ft. Wave Detail: NE 1 foot at 4 seconds and S 1 foot at 5 seconds. .TUE...E winds 5 kt. Seas 2 ft. .TUE NIGHT...S winds 5 kt. Seas 2 ft. .WED...SW winds 5 to 10 kt. Seas 2 ft. .WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. $$ AMZ354-160700- Waters from Savannah GA to Altamaha Sound GA out 20 NM, including Grays Reef National Marine Sanctuary- 104 PM EST Sat Nov 15 2025 .THIS AFTERNOON...SW winds 5 to 10 kt, becoming S 10 to 15 kt late. Seas 2 ft. Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 4 seconds. .TONIGHT...SW winds 10 to 15 kt, increasing to 15 to 20 kt after midnight. Seas 2 to 3 ft, building to 3 to 4 ft after midnight. Wave Detail: S 2 ft at 4 seconds and NE 1 foot at 5 seconds, becoming SW 3 ft at 4 seconds and NE 1 foot at 5 seconds. .SUN...W winds 15 to 20 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail: SW 3 ft at 4 seconds and NE 1 foot at 5 seconds, becoming SW 3 ft at 4 seconds and E 1 foot at 8 seconds. .SUN NIGHT...W winds 10 kt, becoming NW after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 1 foot at 8 seconds. .MON...NE winds 10 to 15 kt. Seas 2 ft. Wave Detail: N 2 ft at 3 seconds and SW 2 ft at 4 seconds. .MON NIGHT...E winds 5 to 10 kt. Seas 2 ft. Wave Detail: NE 2 ft at 4 seconds and SE 1 foot at 8 seconds. .TUE...E winds 5 to 10 kt. Seas 2 ft. .TUE NIGHT...S winds 5 kt. Seas 2 ft. .WED...SW winds 5 to 10 kt. Seas 2 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. $$ AMZ374-160700- Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM- 104 PM EST Sat Nov 15 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM EST THIS EVENING THROUGH SUNDAY AFTERNOON... .THIS AFTERNOON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: W 2 ft at 3 seconds and NE 1 foot at 5 seconds. .TONIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft, building to 4 to 5 ft after midnight. Wave Detail: SW 3 ft at 4 seconds and E 1 foot at 7 seconds, becoming SW 5 ft at 5 seconds and SE 1 foot at 8 seconds. .SUN...W winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave Detail: W 5 ft at 5 seconds and NE 1 foot at 8 seconds. .SUN NIGHT...W winds 10 to 15 kt, becoming NW after midnight. Seas 3 to 4 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: W 4 ft at 5 seconds and SE 1 foot at 8 seconds, becoming NW 3 ft at 4 seconds and SE 1 foot at 8 seconds. .MON...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and W 3 ft at 5 seconds. .MON NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 5 seconds and SE 1 foot at 8 seconds. .TUE...E winds 5 to 10 kt. Seas 2 ft. .TUE NIGHT...S winds 5 to 10 kt. Seas 2 ft. .WED...W winds 5 to 10 kt. Seas 2 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 2 ft. $$