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Isle Au Haut, ME Coastal Forecast

FZUS51 KGYX 181039
CWFGYX

Coastal Waters Forecast
National Weather Service Gray ME
639 AM EDT Tue Aug 18 2026

COASTAL WATERS FROM STONINGTON ME TO MERRIMACK RIVER MA OUT TO 60 NM

ANZ100-190045-
639 AM EDT Tue Aug 18 2026

.Synopsis for Stonington ME to Merrimack River Ma out to 60 NM...
High pressure slides south into midweek, with a cold front
approaching the waters Wednesday evening. High pressure then returns
for the end of the week.

$$

ANZ151-190045-
Penobscot Bay-
639 AM EDT Tue Aug 18 2026

.TODAY...NE winds around 5 kt, becoming E late. Seas around 2 ft.
Areas of fog early this morning, then patchy fog late this morning.
Vsby 1 NM or less, increasing to 1 to 3 NM late this morning.
.TONIGHT...E winds around 5 kt, becoming W after midnight. Seas 2 to
4 ft. Wave Detail: S 3 ft at 8 seconds. Patchy dense fog. Vsby 1 NM
or less.
.WED...SW winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas 2 to 4 ft. Wave Detail: S 3 ft at 8 seconds.
.WED NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: S 2 ft at 6 seconds.
.THU...NW winds around 5 kt, becoming SW around 5 kt in the
afternoon. Seas around 2 ft. Wave Detail: S 2 ft at 6 seconds.
.THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas
around 2 ft. Wave Detail: S 2 ft at 6 seconds.
.FRI...N winds around 5 kt, becoming S in the afternoon. Seas around
2 ft in the morning, then 1 foot or less.
.FRI NIGHT...SW winds around 5 kt, becoming N after midnight. Seas
1 foot or less.
.SAT...NE winds around 5 kt, becoming SE around 5 kt in the
afternoon. Seas 1 foot or less.
.SAT NIGHT...E winds around 5 kt. Seas 1 foot or less. A chance of
showers.

$$

ANZ153-190045-
Casco Bay-
639 AM EDT Tue Aug 18 2026

.TODAY...E winds around 5 kt. Seas around 2 ft. Areas of fog early
this morning, then patchy fog late this morning. Vsby 1 NM or less,
increasing to 1 to 3 NM late this morning.
.TONIGHT...SE winds around 5 kt, becoming W after midnight. Seas
2 to 4 ft. Patchy fog in the evening. Patchy fog after midnight with
vsby 1 NM or less.
.WED...SW winds around 5 kt, becoming S in the afternoon. Seas 2 to
4 ft.
.WED NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft.
.THU...NW winds around 5 kt, becoming S around 5 kt in the
afternoon. Seas 2 to 3 ft.
.THU NIGHT...SW winds around 5 kt, becoming N after midnight. Seas
around 2 ft.
.FRI...NE winds around 5 kt, becoming SE in the afternoon. Seas
around 2 ft.
.FRI NIGHT...S winds around 5 kt, becoming N after midnight. Seas
around 2 ft.
.SAT...NE winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft. A chance of showers in the afternoon.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.

$$

ANZ150-190045-
Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM-
639 AM EDT Tue Aug 18 2026

.TODAY...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft
at 5 seconds. A slight chance of showers early this morning. Areas
of fog early this morning, then patchy fog late this morning. Vsby
1 NM or less, increasing to 1 to 3 NM late this morning.
.TONIGHT...N winds around 5 kt, becoming W after midnight. Seas 3 to
5 ft. Wave Detail: S 5 ft at 9 seconds. Patchy dense fog. Vsby 1 NM
or less.
.WED...SW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at
8 seconds.
.WED NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
3 to 4 ft. Wave Detail: S 4 ft at 8 seconds.
.THU...NW winds around 5 kt, becoming SW in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 8 seconds.
.THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 2 ft at
8 seconds.
.FRI...NE winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft.
.FRI NIGHT...SW winds around 5 kt, becoming N after midnight. Seas
around 2 ft.
.SAT...E winds 5 to 10 kt. Seas around 2 ft.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.

$$

ANZ152-190045-
Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM-
639 AM EDT Tue Aug 18 2026

.TODAY...NE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S 2 ft
at 5 seconds. Areas of fog early this morning, then patchy fog late
this morning. Vsby 1 NM or less, increasing to 1 to 3 NM late this
morning.
.TONIGHT...NE winds around 5 kt, becoming W after midnight. Seas
3 to 5 ft. Wave Detail: SE 4 ft at 9 seconds. Patchy fog. Vsby 1 NM
or less.
.WED...SW winds around 5 kt, becoming S in the afternoon. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 8 seconds. Patchy dense fog in the
morning with vsby 1 NM or less.
.WED NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
around 3 ft. Wave Detail: SE 3 ft at 8 seconds.
.THU...NW winds around 5 kt, becoming S around 5 kt in the
afternoon. Seas 2 to 3 ft.
.THU NIGHT...SW winds around 5 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: S 2 ft at 7 seconds and SE 2 ft at
8 seconds.
.FRI...NE winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft.
.FRI NIGHT...S winds around 5 kt, becoming N after midnight. Seas
around 2 ft.
.SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers in
the afternoon.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.

$$

ANZ154-190045-
Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out
25 NM-
639 AM EDT Tue Aug 18 2026

.TODAY...NE winds around 5 kt. Seas around 2 ft. Wave Detail: SE
2 ft at 5 seconds and SE 2 ft at 9 seconds. Areas of fog early this
morning, then patchy fog late this morning. Vsby 1 NM or less,
increasing to 1 to 3 NM late this morning.
.TONIGHT...SE winds around 5 kt, becoming SW after midnight. Seas
2 to 4 ft. Wave Detail: SE 3 ft at 8 seconds. Patchy fog in the
evening. Patchy fog after midnight with vsby 1 NM or less.
.WED...SW winds around 5 kt, becoming S in the afternoon. Seas 2 to
4 ft. Wave Detail: SE 3 ft at 9 seconds.
.WED NIGHT...SW winds 5 to 10 kt, becoming W after midnight. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds.
.THU...NW winds around 5 kt, becoming SE in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 7 seconds.
.THU NIGHT...S winds around 5 kt, becoming N after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds.
.FRI...NE winds around 5 kt. Seas around 2 ft.
.FRI NIGHT...SE winds around 5 kt, becoming N after midnight. Seas
around 2 ft.
.SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers in
the afternoon.
.SAT NIGHT...E winds 5 to 10 kt. Seas around 2 ft. A chance of
showers.

$$

ANZ180-190045-
Waters from Stonington ME to Port Clyde ME from 25 to 60 NM-
639 AM EDT Tue Aug 18 2026

.TODAY...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 4 ft at
9 seconds. A slight chance of showers early this morning. Patchy fog
this morning. Vsby 1 NM or less, increasing to 1 to 3 NM late this
morning.
.TONIGHT...N winds 5 to 10 kt, becoming NW after midnight. Seas 3 to
5 ft. Wave Detail: S 5 ft at 9 seconds. Patchy fog. Vsby 1 NM or
less.
.WED...SW winds 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: SE 5 ft at
8 seconds.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 7 seconds.
.THU...W winds 5 to 10 kt. Seas around 3 ft. Wave Detail: S 3 ft at
7 seconds and SE 2 ft at 8 seconds.
.THU NIGHT...SW winds 5 to 10 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds.
.FRI...NE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SE winds around 5 kt, becoming NE after midnight. Seas
around 2 ft.
.SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers in
the afternoon.
.SAT NIGHT...E winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.

$$

ANZ182-190045-
Waters from Port Clyde ME to Cape Elizabeth ME from 25 to 60 NM-
639 AM EDT Tue Aug 18 2026

.TODAY...NE winds 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: S 3 ft at
9 seconds. Patchy fog this morning. Vsby 1 NM or less, increasing to
1 to 3 NM late this morning.
.TONIGHT...N winds around 5 kt, becoming W after midnight. Seas 3 to
5 ft. Wave Detail: S 5 ft at 9 seconds. Patchy fog. Vsby 1 to 3 NM,
decreasing to 1 NM or less after midnight.
.WED...SW winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
8 seconds.
.WED NIGHT...SW winds 10 to 15 kt, becoming W after midnight. Seas
3 to 4 ft. Wave Detail: S 4 ft at 7 seconds.
.THU...NW winds 5 to 10 kt, becoming NE in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 7 seconds and E 2 ft at 8 seconds.
.THU NIGHT...S winds around 5 kt, becoming NW after midnight. Seas
2 to 3 ft. Wave Detail: SE 2 ft at 8 seconds.
.FRI...NE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SE winds around 5 kt, becoming NE after midnight. Seas
around 2 ft.
.SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers in
the afternoon.
.SAT NIGHT...E winds around 10 kt. Seas 2 to 3 ft. A chance of
showers.

$$

ANZ184-190045-
Waters from Cape Elizabeth ME to Merrimack River MA from 25 to 60 NM-
639 AM EDT Tue Aug 18 2026

.TODAY...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 9 seconds. Patchy fog this morning. Vsby 1 NM or less, increasing
to 1 to 3 NM late this morning.
.TONIGHT...N winds around 5 kt, becoming W after midnight. Seas 2 to
4 ft. Wave Detail: SE 4 ft at 9 seconds. Patchy fog. Vsby 1 to 3 NM.
.WED...SW winds around 5 kt, becoming S in the afternoon. Seas 3 to
4 ft. Wave Detail: SE 3 ft at 8 seconds.
.WED NIGHT...S winds around 10 kt, becoming W after midnight. Seas
around 3 ft. Wave Detail: SE 3 ft at 7 seconds.
.THU...NW winds 5 to 10 kt, becoming E in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 7 seconds.
.THU NIGHT...S winds around 5 kt, becoming NW after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds.
.FRI...NE winds 5 to 10 kt. Seas around 2 ft.
.FRI NIGHT...SE winds around 5 kt, becoming NE after midnight. Seas
around 2 ft.
.SAT...E winds 5 to 10 kt. Seas around 2 ft. A chance of showers in
the afternoon.
.SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers.

$$


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