fzus52 kchs 182050
cwfchs
expires:202509190900;;210362

coastal waters forecast
national weather service charleston sc
449 pm 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


amz330-190900-
charleston harbor-
450 pm edt thu sep 18 2025

.tonight...s winds 5 kt until early morning, becoming light and
variable. 
.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, increasing to 10 to 15 kt with gusts
to 20 kt in the afternoon. 
.sat night...ne winds 10 to 15 kt. 
.sun...ne winds 10 to 15 kt with gusts to 20 kt. 
.sun night...ne winds 10 to 15 kt. 
.mon...ne winds 10 to 15 kt. a slight chance of showers and
tstms. 
.mon night...ne winds 5 to 10 kt. a slight chance of showers and
tstms. 
.tue...ne winds 5 to 10 kt. a chance of showers with a slight
chance of tstms. 
.tue night...se winds 5 to 10 kt.  

winds and waves higher in and near tstms.

unless otherwise noted, waves 1 foot or less. 

charleston harbor water temperature 78 degrees. 

$$

fzus52 kchs 182050
cwfchs
expires:202509190900;;210363

coastal waters forecast
national weather service charleston sc
449 pm 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


amz350-190900-
waters from south santee river to edisto beach sc out 20 nm-
450 pm edt thu sep 18 2025

.tonight...se winds 5 kt. seas 2 ft. wave detail: e 2 ft at
8 seconds and sw 1 foot at 3 seconds. 
.fri...ne winds 5 to 10 kt. seas 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 to 3 ft. wave detail: e
3 ft at 8 seconds and se 2 ft at 5 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
7 seconds. a slight chance of showers in the afternoon. 
.sat night...ne winds 15 to 20 kt. seas 3 to 4 ft. wave detail: e
4 ft at 6 seconds. a slight chance of showers and tstms. 
.sun...ne winds 15 to 20 kt with gusts to 25 kt. seas 4 to 5 ft.
wave detail: e 5 ft at 7 seconds. a slight chance of tstms in the
morning. a slight chance of showers. 
.sun night...ne winds 15 to 20 kt. seas 4 to 5 ft. a slight
chance of showers. a slight chance of tstms after midnight. 
.mon...ne winds 15 kt. seas 4 to 5 ft. a slight chance of showers
and tstms. 
.mon night...ne winds 10 to 15 kt. seas 3 to 4 ft. a chance of
showers with a slight chance of tstms. 
.tue...ne winds 5 to 10 kt. seas 3 to 4 ft. a chance of showers
with a slight chance of tstms. 
.tue night...se winds 5 to 10 kt. seas 3 to 4 ft. a slight chance
of showers and tstms.  

winds and seas higher in and near tstms.

$$