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coastal waters forecast for northeast florida/southeast georgia
national weather service jacksonville fl
253 am edt tue aug 18 2026

atlantic coastal waters from altamaha sound ga to flagler beach
fl out to 60 nm.

seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.


amz450-452-454-182200-
coastal waters from altamaha sound to fernandina beach fl out
20 nm-
coastal waters from fernandina beach to st. augustine fl out
20 nm-
coastal waters from st. augustine to flagler beach fl out 20 nm-
253 am edt tue aug 18 2026

.today...west winds around 10 knots, becoming south southeast 
late this afternoon. seas 2 to 3 feet. wave detail: west 2 feet at
3 seconds and east 2 feet at 8 seconds. intracoastal waters a 
light chop. a chance of showers and thunderstorms late this 
afternoon.
.tonight...southwest winds around 15 knots, becoming west 10 to 15
knots after midnight. seas 2 to 3 feet. wave detail: south 2 feet
at 4 seconds and east 2 feet at 9 seconds. intracoastal waters a 
moderate chop. a slight chance of showers and thunderstorms in the
evening.
.wednesday...west winds 5 to 10 knots, becoming south southeast 10
to 15 knots in the afternoon. seas 2 to 3 feet. wave detail: 
southwest 2 feet at 3 seconds and east 2 feet at 10 seconds.
intracoastal waters a light chop. a chance of showers and 
thunderstorms late in the afternoon. 
.wednesday night...southwest winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. seas 2 to 3 feet. wave detail: 
south 2 feet at 3 seconds and east 2 feet at 9 seconds.
intracoastal waters becoming mostly smooth. a slight chance of 
showers and thunderstorms in the evening. 
.thursday...southwest winds 5 to 10 knots, becoming southeast
10 to 15 knots in the afternoon. seas 2 to 3 feet. wave detail:
southeast 2 feet at 3 seconds and east 2 feet at 9 seconds.
intracoastal waters becoming a light chop. a chance of showers 
and thunderstorms in the afternoon. 
.thursday night...south winds 10 to 15 knots, becoming southwest
around 10 knots after midnight. seas 2 to 3 feet. wave detail:
south 2 feet at 4 seconds. intracoastal waters a light chop. a 
slight chance of showers and thunderstorms in the evening. 
.friday...southwest winds 5 to 10 knots, becoming south southeast
around 15 knots in the afternoon. seas 2 to 3 feet. intracoastal
waters becoming a moderate chop. a chance of showers and 
thunderstorms during the afternoon. 
.friday night...south winds around 15 knots, becoming southwest 10
to 15 knots after midnight. seas 2 to 3 feet. intracoastal waters
becoming a light chop. a chance of showers and thunderstorms
during the evening.
.saturday...southwest winds around 10 knots, becoming south around
15 knots during the afternoon. seas 2 to 3 feet. intracoastal
waters becoming a moderate chop. showers and thunderstorms likely
during the afternoon. 

winds and waves higher in and near thunderstorms.

$$