Kiawah River Bridge, SC Coastal Forecast

FZUS52 KCHS 232104
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
404 PM EST Tue Dec 23 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

AMZ300-240930-
404 PM EST Tue Dec 23 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will prevail through the holiday week. A cold front
could move through the area Sunday night or early Monday.

$$

AMZ330-240930-
Charleston Harbor-
404 PM EST Tue Dec 23 2025

.TONIGHT...SW 10 to 15 kt, becoming W 5 to 10 kt.
.WED...NW winds 5 kt, becoming NE in the afternoon.
.WED NIGHT...E winds 5 kt.
.THU...SW winds 5 to 10 kt.
.THU NIGHT...W winds 5 kt.
.FRI...N winds 5 kt, becoming E in the afternoon.
.FRI NIGHT...SW winds 5 kt.
.SAT...SW winds 5 to 10 kt.
.SAT NIGHT...W winds 5 kt.
.SUN...SW winds 5 to 10 kt.
.SUN NIGHT...W winds 10 to 15 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 55 degrees.

$$

AMZ350-240930-
Waters from South Santee River to Edisto Beach SC out 20 NM-
404 PM EST Tue Dec 23 2025

.TONIGHT...SW winds 10 to 15 kt, becoming W. Seas 3 to 4 ft,
subsiding to 2 to 3 ft. Wave Detail: E 3 ft at 9 seconds and W 2
ft at 4 seconds.
.WED...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas
2 to 3 ft. Wave Detail: W 2 ft at 4 seconds and E 2 ft at
9 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 ft. Wave Detail: E 2 ft at
9 seconds and S 1 foot at 3 seconds.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 3 seconds and SE 2 ft at 9 seconds.
.THU NIGHT...W winds 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and E 2 ft at 9 seconds.
.FRI...N winds 5 to 10 kt. Seas 2 ft. Wave Detail: SW 2 ft at
4 seconds and E 2 ft at 9 seconds.
.FRI NIGHT...SW winds 10 kt. Seas 2 to 3 ft, building to 3 to
4 ft after midnight.
.SAT...SW winds 10 kt. Seas 3 to 4 ft.
.SAT NIGHT...W winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN NIGHT...W winds 15 to 20 kt. Seas 4 to 5 ft.

$$

AMZ352-240930-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
404 PM EST Tue Dec 23 2025

.TONIGHT...SW winds 10 kt, becoming W 5 to 10 kt. Seas 3 to 4 ft,
subsiding to 2 to 3 ft. Wave Detail: E 4 ft at 9 seconds.
.WED...NW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds and W 1 foot at 2 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 ft. Wave Detail: E 2 ft at
9 seconds.
.THU...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
9 seconds and SW 1 foot at 2 seconds.
.THU NIGHT...W winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 9 seconds and SW 1 foot at 3 seconds.
.FRI...NW winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 foot at
3 seconds.
.FRI NIGHT...SW winds 10 kt. Seas 2 to 3 ft.
.SAT...SW winds 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft.
.SUN NIGHT...W winds 15 to 20 kt. Seas 3 to 4 ft.

$$

AMZ354-240930-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
404 PM EST Tue Dec 23 2025

.TONIGHT...S winds 5 to 10 kt, becoming SW later this evening,
then W late. Seas 3 to 4 ft, subsiding to 2 to 3 ft. Wave Detail:
E 4 ft at 9 seconds.
.WED...W winds 5 to 10 kt, becoming N in the afternoon. Seas 2 to
3 ft. Wave Detail: E 3 ft at 9 seconds.
.WED NIGHT...E winds 5 kt, becoming S after midnight. Seas 2 to
3 ft. Wave Detail: E 3 ft at 9 seconds.
.THU...W winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
9 seconds.
.THU NIGHT...W winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 9 seconds and SW 1 foot at 3 seconds.
.FRI...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 ft. Wave Detail: E 2 ft at 9 seconds and SW 1 foot at
3 seconds.
.FRI NIGHT...SW winds 10 kt. Seas 2 ft.
.SAT...SW winds 10 kt. Seas 2 to 3 ft.
.SAT NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.SUN NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft.

$$

AMZ374-240930-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
404 PM EST Tue Dec 23 2025

.TONIGHT...SW winds 5 to 10 kt, becoming W 10 kt late. Seas 4 to
5 ft, subsiding to 3 to 4 ft. Wave Detail: E 5 ft at 9 seconds,
becoming E 4 ft at 9 seconds.
.WED...W winds 10 to 15 kt, becoming NW 5 to 10 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: E 4 ft at 9 seconds.
.WED NIGHT...NE winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 9 seconds.
.THU...W winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
9 seconds.
.THU NIGHT...W winds 10 to 15 kt. Seas 2 to 3 ft, building to
3 to 4 ft after midnight. Wave Detail: SW 2 ft at 3 seconds and E
2 ft at 9 seconds, becoming E 3 ft at 9 seconds and W 2 ft at
3 seconds.
.FRI...W winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
8 seconds and W 2 ft at 3 seconds.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft, building to
3 to 4 ft after midnight.
.SAT...W winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...SW winds 10 kt. Seas 3 to 4 ft.
.SUN...W winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN NIGHT...W winds 20 to 25 kt. Seas 4 to 6 ft.

$$