782
FZUS52 KCHS 292223
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
623 PM EDT Tue Jul 29 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

AMZ300-301115-
623 PM EDT Tue Jul 29 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Atlantic high pressure will prevail for most of the week. A cold
front will stall near the area this weekend.

$$

AMZ330-301115-
Charleston Harbor-
623 PM EDT Tue Jul 29 2025

.TONIGHT...S winds 5 to 10 kt. A slight chance of showers and
tstms this evening, then a chance of showers and tstms after
midnight. A slight chance of showers and tstms late.
.WED...S winds 5 to 10 kt. A chance of showers and tstms.
.WED NIGHT...S winds 5 to 10 kt. A chance of showers and tstms.
.THU...SW winds 5 kt, increasing to 10 kt in the afternoon. A
chance of showers and tstms.
.THU NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms.
.FRI...SW winds 5 to 10 kt. A chance of showers and tstms.
.FRI NIGHT...SW winds 5 to 10 kt. Showers and tstms likely.
.SAT...N winds 5 to 10 kt. Showers and tstms.
.SAT NIGHT...NE winds 10 kt. Showers and tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 89 degrees.

$$

AMZ350-301115-
Waters from South Santee River to Edisto Beach SC out 20 NM-
623 PM EDT Tue Jul 29 2025

.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 1 foot
at 4 seconds and SE 1 foot at 8 seconds. A slight chance of
showers and tstms this evening. A chance of showers and tstms
after midnight, then a slight chance of showers and tstms late.
.WED...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and E 1 foot at 8 seconds. A chance of showers and
tstms.
.WED NIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and SE 1 foot at 8 seconds. A chance of showers and
tstms.
.THU...SW winds 10 to 15 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and SE 1 foot at 8 seconds. A chance of showers and
tstms.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers
and tstms.
.FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers and
tstms.
.SAT...N winds 10 to 15 kt. Seas 2 to 3 ft. Showers and tstms.
.SAT NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Showers and
tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-301115-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
623 PM EDT Tue Jul 29 2025

.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 1 foot
at 4 seconds and E 1 foot at 8 seconds. A slight chance of
showers and tstms.
.WED...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and E 1 foot at 8 seconds. A slight chance of showers
and tstms.
.WED NIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
5 seconds and E 1 foot at 8 seconds. A chance of showers and
tstms.
.THU...SW winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and SE 1 foot at 8 seconds. A chance of showers and
tstms, mainly in the morning.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 1 foot at 8 seconds. A slight chance of
showers and tstms.
.FRI...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and
tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers and
tstms likely.
.SAT...N winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms.
.SAT NIGHT...NE winds 10 kt. Seas 2 ft. Showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-301115-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
623 PM EDT Tue Jul 29 2025

.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and E 1 foot at 8 seconds. A slight chance of showers
and tstms this evening.
.WED...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 ft. Wave Detail: S 2 ft at 5 seconds and E 1 foot at 8 seconds.
A slight chance of showers and tstms in the afternoon.
.WED NIGHT...S winds 10 kt. Seas 2 ft. Wave Detail: S 2 ft at
4 seconds and E 1 foot at 8 seconds. A chance of showers and
tstms, mainly in the evening.
.THU...W winds 5 to 10 kt, becoming S in the afternoon. Seas
2 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at 8 seconds.
A slight chance of showers and tstms in the afternoon.
.THU NIGHT...S winds 10 to 15 kt, becoming SW after midnight.
Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and E 1 foot at
8 seconds. A slight chance of showers and tstms.
.FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms.
.SAT NIGHT...NE winds 10 kt. Seas 2 ft. Showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-301115-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
623 PM EDT Tue Jul 29 2025

.TONIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at
4 seconds and E 1 foot at 8 seconds.
.WED...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and E 1 foot at 8 seconds.
.WED NIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and E 1 foot at 8 seconds. A slight chance of
showers and tstms in the evening, then a chance of showers and
tstms after midnight.
.THU...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft at
4 seconds and E 1 foot at 8 seconds. A slight chance of showers
and tstms.
.THU NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 5 seconds and SE 2 ft at 9 seconds. A slight chance of
showers and tstms.
.FRI...SW winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.
.SAT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms
likely.
.SAT NIGHT...SW winds 10 kt. Seas 2 ft. Showers and tstms.

Winds and seas higher in and near tstms.

$$