FZUS52 KCHS 160903
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
503 AM EDT Thu Apr 16 2026

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

AMZ300-162315-
503 AM EDT Thu Apr 16 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Atlantic high pressure will prevail through the Saturday. A
strong cold front will push across the waters Sunday bringing
increasing winds and seas.

$$

AMZ330-162315-
Charleston Harbor-
503 AM EDT Thu Apr 16 2026

.TODAY...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts
to 20 kt this afternoon.
.TONIGHT...SW winds 10 to 15 kt.
.FRI...SW winds 5 to 10 kt.
.FRI NIGHT...SW winds 5 to 10 kt.
.SAT...SW winds 5 to 10 kt.
.SAT NIGHT...S winds 10 kt.
.SUN...W winds 10 to 15 kt.
.SUN NIGHT...N winds 10 to 15 kt, increasing to 15 to 20 kt. Waves
building 1 to 2 ft.
.MON...NE winds 10 to 15 kt.
.MON NIGHT...NE winds 5 to 10 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 69 degrees.

$$

AMZ350-162315-
Waters from South Santee River to Edisto Beach SC out 20 NM-
503 AM EDT Thu Apr 16 2026

.TODAY...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 ft.
Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 9 seconds.
.TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft
at 4 seconds and E 2 ft at 9 seconds.
.FRI...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at
5 seconds and E 2 ft at 9 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 9 seconds.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and SE 2 ft at 8 seconds.
.SAT NIGHT...S 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.
.SUN...SW winds 15 to 20 kt. Seas 3 to 4 ft.
.SUN NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Seas 4 to
5 ft.
.MON...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 6 ft.
.MON NIGHT...NE winds 15 to 20 kt. Seas 3 to 4 ft.

$$

AMZ352-162315-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
503 AM EDT Thu Apr 16 2026

.TODAY...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 9 seconds.
.TONIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at
4 seconds and E 3 ft at 9 seconds.
.FRI...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: S 3 ft at
5 seconds and E 2 ft at 9 seconds.
.FRI NIGHT...S winds 10 kt. Seas 3 ft. Wave Detail: SE 3 ft at
9 seconds and S 2 ft at 5 seconds.
.SAT...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds.
.SAT NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft
at 5 seconds and SE 3 ft at 8 seconds.
.SUN...SW winds 15 to 20 kt. Seas 3 ft.
.SUN NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Seas 4 to
5 ft.
.MON...NE winds 20 to 25 kt with gusts to 30 kt. Seas 4 to 6 ft.
.MON NIGHT...E winds 15 to 20 kt. Seas 4 to 5 ft.

$$

AMZ354-162315-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
503 AM EDT Thu Apr 16 2026

.TODAY...S winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft.
Wave Detail: SE 3 ft at 9 seconds and S 2 ft at 4 seconds.
.TONIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 3 ft at
4 seconds and E 3 ft at 9 seconds.
.FRI...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 9 seconds and S 2 ft at
5 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.SAT...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 8 seconds.
.SAT 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.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN NIGHT...N winds 20 to 25 kt with gusts to 30 kt. Seas 4 to
5 ft.
.MON...NE winds 20 to 25 kt with gusts to 30 kt. Seas 5 to 7 ft.
.MON NIGHT...E winds 15 to 20 kt. Seas 4 to 5 ft.

$$

AMZ374-162315-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
503 AM EDT Thu Apr 16 2026

.TODAY...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 9 seconds.
.TONIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 3 ft at 4 seconds and E 3 ft at 9 seconds.
.FRI...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: S 3 ft
at 5 seconds and SE 3 ft at 9 seconds.
.FRI NIGHT...S winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 9 seconds and S 2 ft at 4 seconds.
.SAT...SW winds 10 to 15 kt, becoming S 5 to 10 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: SE 3 ft at 8 seconds.
.SAT NIGHT...S winds 10 to 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.
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN NIGHT...N winds 25 kt with gusts to 35 kt. Seas 5 to 7 ft.
.MON...NE winds 20 to 25 kt with gusts to 30 kt. Seas 7 to 9 ft.
.MON NIGHT...NE winds 15 to 20 kt. Seas 5 to 7 ft.

$$