fzus52 kchs 120452
cwfchs
expires:202603121900;;054043

coastal waters forecast
national weather service charleston sc
1252 am edt thu mar 12 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


amz330-121900-
charleston harbor-
1252 am edt thu mar 12 2026

...small craft advisory in effect through this evening...

.rest of tonight...sw winds 20 kt with gusts to 25 kt. waves 1 to
2 ft. 
.thu...sw winds 20 kt, becoming nw in the afternoon. waves 2 to
3 ft. a slight chance of tstms. a chance of showers in the
morning, then showers in the afternoon. 
.thu night...n winds 20 to 25 kt, becoming ne 10 to 15 kt after
midnight. waves 2 to 3 ft. 
.fri...ne winds 10 kt, becoming e in the afternoon. 
.fri night...s winds 5 kt, becoming sw after midnight. 
.sat...variable winds 5 kt. 
.sat night...e winds 5 kt. 
.sun...se winds 5 to 10 kt. a chance of showers and tstms. 
.sun night...s winds 10 to 15 kt. showers likely with a chance of
tstms. 
.mon...sw winds 15 to 20 kt. waves 1 to 2 ft. showers likely with
a chance of tstms. 
.mon night...nw winds 15 to 20 kt. waves 1 to 2 ft. a chance of
showers.  

winds and waves higher in and near tstms.

unless otherwise noted, waves 1 foot or less. 

charleston harbor water temperature 63 degrees. 

$$

fzus52 kchs 120452
cwfchs
expires:202603121900;;054044

coastal waters forecast
national weather service charleston sc
1252 am edt thu mar 12 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


amz350-121900-
waters from south santee river to edisto beach sc out 20 nm-
1252 am edt thu mar 12 2026

...gale warning in effect through late tonight...

.rest of tonight...sw winds 15 to 20 kt with gusts to 25 kt. seas
4 to 5 ft. wave detail: s 5 ft at 6 seconds and se 3 ft at
9 seconds. 
.thu...sw winds 20 to 25 kt, becoming w 25 to 30 kt with gusts to
35 kt in the afternoon. seas 4 to 6 ft. wave detail: s 6 ft at 7 
seconds and se 4 ft at 8 seconds. showers with a slight chance of 
tstms in the afternoon. 
.thu night...n winds 25 to 30 kt with gusts to 35 kt, becoming ne
20 to 25 kt with gusts to 30 kt after midnight. seas 4 to 6 ft. 
wave detail: nw 5 ft at 5 seconds and se 5 ft at 8 seconds. 
.fri...ne winds 15 to 20 kt with gusts to 25 kt, diminishing to
5 to 10 kt in the afternoon. seas 4 to 5 ft, subsiding to 3 to
4 ft in the afternoon. wave detail: ne 5 ft at 6 seconds and s
1 foot at 7 seconds, becoming e 4 ft at 7 seconds. 
.fri night...se winds 5 kt, becoming sw after midnight. seas 2 to
3 ft. wave detail: e 3 ft at 7 seconds. 
.sat...n winds 5 kt, becoming e in the afternoon. seas 2 to 3 ft.
wave detail: e 3 ft at 8 seconds. 
.sat night...e winds 5 to 10 kt. seas 2 to 3 ft. a slight chance
of showers and tstms after midnight. 
.sun...se winds 10 to 15 kt. seas 3 to 4 ft. a chance of showers
and tstms. 
.sun night...s winds 15 to 20 kt. seas 4 to 6 ft. showers likely
with a chance of tstms. 
.mon...sw winds 20 to 25 kt. seas 6 to 8 ft. showers likely with
a chance of tstms. 
.mon night...nw winds 25 to 30 kt. seas 6 to 8 ft. a chance of
showers with a slight chance of tstms.  

winds and seas higher in and near tstms.

$$