fzus52 kchs 180909
cwfchs
expires:202509182215;;182898

coastal waters forecast
national weather service charleston sc
509 am edt thu sep 18 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


amz330-182215-
charleston harbor-
509 am edt thu sep 18 2025

.today...w winds 5 kt, becoming s 10 to 15 kt with gusts to 20 kt 
this afternoon.
.tonight...se winds 5 to 10 kt, diminishing to 5 kt after
midnight. 
.fri...ne winds 5 kt, becoming e in the afternoon. 
.fri night...e winds 5 to 10 kt. 
.sat...ne winds 5 to 10 kt, becoming e 10 to 15 kt with gusts to
20 kt in the afternoon. 
.sat night...ne winds 10 to 15 kt with gusts to 20 kt. 
.sun...ne winds 15 to 20 kt. waves 1 to 2 ft. a slight chance of
showers and tstms. 
.sun night...ne winds 15 to 20 kt. waves 1 to 2 ft. 
.mon...ne winds 10 to 15 kt. a slight chance of showers and
tstms. 
.mon night...ne winds 10 to 15 kt. a slight chance of showers and
tstms.  

winds and waves higher in and near tstms.

unless otherwise noted, waves 1 foot or less. 

charleston harbor water temperature 77 degrees. 

$$

fzus52 kchs 180909
cwfchs
expires:202509182215;;182899

coastal waters forecast
national weather service charleston sc
509 am edt thu sep 18 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


amz350-182215-
waters from south santee river to edisto beach sc out 20 nm-
509 am edt thu sep 18 2025

.today...sw winds 5 kt, becoming w later this morning, then s 5 to
10 kt this afternoon. seas 1 to 2 ft. wave detail: e 2 ft at 8 
seconds and sw 1 foot at 3 seconds. a slight chance of showers
this morning.
.tonight...se winds 5 to 10 kt, diminishing to 5 kt after
midnight. seas 1 to 2 ft. wave detail: e 2 ft at 8 seconds and sw
1 foot at 3 seconds. 
.fri...ne winds 5 kt, becoming e in the afternoon. seas 1 to 2 
ft. wave detail: e 2 ft at 9 seconds and s 1 foot at 4 seconds. 
.fri night...e winds 5 to 10 kt. seas 2 ft. wave detail: se 2 ft
at 5 seconds and e 2 ft at 8 seconds. 
.sat...ne winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. seas 2 to 3 ft, building to 3 to 4 ft in the
afternoon. wave detail: e 3 ft at 8 seconds, becoming e 4 ft at
8 seconds. a slight chance of showers in the afternoon. 
.sat night...ne winds 15 to 20 kt. seas 4 to 5 ft. wave detail: e
5 ft at 7 seconds. a slight chance of showers. a slight chance of
tstms after midnight. 
.sun...ne winds 20 to 25 kt. seas 4 to 6 ft. a slight chance of 
showers and tstms. 
.sun night...ne winds 15 to 20 kt. seas 5 to 6 ft. a slight
chance of showers and tstms. 
.mon...ne winds 15 to 20 kt. seas 4 to 6 ft. a chance of showers
and tstms. 
.mon night...e winds 10 to 15 kt. seas 4 to 5 ft. a chance of
showers and tstms.  

winds and seas higher in and near tstms.

$$