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South Portland, ME Coastal Forecast

FZUS51 KGYX 181910
CWFGYX

Coastal Waters Forecast
National Weather Service Gray ME
310 PM EDT Wed Jun 18 2025

COASTAL WATERS FROM STONINGTON ME TO MERRIMACK RIVER MA OUT TO 25 NM

ANZ100-190915-
310 PM EDT Wed Jun 18 2025

.Synopsis for Stonington ME to Merrimack River Ma out to 25 NM
Onshore flow will prevail through tonight as a warm front lifts
northward and then stalls over the waters. A cold front will approach
from the west late Thursday into Thursday night, bringing showers
and thunderstorms. Breezy westerly winds will then prevail on Friday
behind this front before high pressure returns this weekend.


$$

ANZ154-190915-
Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out
25 NM-
310 PM EDT Wed Jun 18 2025

.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds. Patchy fog. Vsby 1 NM or less.
.THU...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at
7 seconds. Patchy fog. Vsby 1 NM or less, increasing to 1 to 3 NM in
the afternoon.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 6 seconds. A chance of showers. Vsby
1 to 3 NM in the evening.
.FRI...W winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft.
Wave Detail: SW 3 ft at 6 seconds and E 2 ft at 8 seconds.
.FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 3 ft at
6 seconds and E 2 ft at 8 seconds.
.SAT...SW winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 3 seconds and E 2 ft at 8 seconds.
.SAT NIGHT...S winds around 10 kt. Seas 2 to 3 ft. A chance of
showers after midnight.
.SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A
chance of showers.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft.
.MON...S winds 5 to 10 kt. Seas 2 to 3 ft.
.MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.

$$

ANZ152-190915-
Coastal Waters from Port Clyde, ME to Cape Elizabeth, ME out 25 NM-
310 PM EDT Wed Jun 18 2025

.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds. Patchy fog early this evening, then widespread dense
fog late this evening and overnight. Vsby 1 NM or less.
.THU...S winds around 5 kt, increasing to 10 to 15 kt with gusts up
to 20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at
7 seconds and S 2 ft at 4 seconds. Widespread fog in the morning,
then patchy fog in the afternoon. Vsby 1 NM or less, increasing to
1 to 3 NM in the afternoon.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds. A
chance of showers after midnight.
.FRI...W winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 4 ft.
Wave Detail: SW 4 ft at 6 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...W winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Gusts up to 25 kt. Seas 3 to 4 ft. Wave Detail: SW 3 ft at
7 seconds and SE 2 ft at 8 seconds.
.SAT...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: S 3 ft at 7 seconds and SE 2 ft at 8 seconds.
.SAT NIGHT...S winds 5 to 10 kt, increasing to 10 to 15 kt with
gusts up to 20 kt after midnight. Seas 2 to 3 ft. A chance of
showers after midnight.
.SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A
chance of showers.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft.
.MON...S winds 5 to 10 kt. Seas 2 to 3 ft.
.MON NIGHT...SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft.

$$

ANZ150-190915-
Coastal Waters from Stonington, ME to Port Clyde, ME out 25 NM-
310 PM EDT Wed Jun 18 2025

.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 7 seconds. Patchy fog early this evening, then widespread dense
fog late this evening and overnight. Vsby 1 NM or less.
.THU...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft at
7 seconds. Widespread dense fog in the morning, then patchy fog in
the afternoon. Vsby 1 NM or less, increasing to 1 to 3 NM in the
afternoon.
.THU NIGHT...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to
5 ft. Wave Detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds.
Patchy fog in the evening. A chance of showers after midnight. Vsby
1 to 3 NM in the evening.
.FRI...SW winds 15 to 20 kt with gusts up to 30 kt. Seas 3 to 5 ft.
Wave Detail: S 4 ft at 7 seconds.
.FRI NIGHT...W winds 10 to 15 kt with gusts up to 25 kt. Seas 3 to
4 ft. Wave Detail: SW 4 ft at 7 seconds and SE 2 ft at 8 seconds.
.SAT...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: S 3 ft at 7 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
after midnight.
.SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. A
chance of showers.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.MON...SW winds 5 to 10 kt. Seas 2 to 3 ft.
.MON NIGHT...SW winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas 2 to 3 ft.

$$

ANZ153-190915-
Casco Bay-
310 PM EDT Wed Jun 18 2025

.TONIGHT...S winds 5 to 10 kt, diminishing to around 5 kt towards
daybreak. Seas 2 to 3 ft. Areas of fog early this evening, then
widespread dense fog late this evening and overnight. Vsby 1 NM or
less.
.THU...S winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas around 2 ft. Widespread fog in the morning, then
patchy fog in the afternoon. Vsby 1 NM or less, increasing to 1 to
3 NM in the afternoon.
.THU NIGHT...SW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to
3 ft. Patchy fog in the evening. A chance of showers. Vsby 1 to 3 NM
in the evening.
.FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. A
chance of showers in the morning.
.FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, diminishing
to 5 to 10 kt after midnight. Seas 2 to 3 ft.
.SAT...N winds around 5 kt, becoming SE in the afternoon. Seas 2 to
3 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers after midnight.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.SUN NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft.
.MON...S winds around 5 kt, increasing to 5 to 10 kt in the
afternoon. Seas around 2 ft.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.

$$

ANZ151-190915-
Penobscot Bay-
310 PM EDT Wed Jun 18 2025

.TONIGHT...S winds 5 to 10 kt, diminishing to around 5 kt after
midnight. Seas around 2 ft. Patchy fog early this evening, then
widespread dense fog late this evening and overnight. Vsby 1 NM or
less.
.THU...S winds around 5 kt. Seas around 2 ft. Widespread dense fog
in the morning. Patchy fog in the afternoon. Vsby 1 NM or less,
increasing to 1 to 3 NM in the afternoon.
.THU NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts
up to 20 kt after midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at
4 seconds. Patchy fog in the evening. A chance of showers after
midnight. Vsby 1 to 3 NM in the evening.
.FRI...W winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft.
Wave Detail: SW 3 ft at 5 seconds.
.FRI NIGHT...W winds 10 to 15 kt with gusts up to 20 kt, becoming NW
5 to 10 kt after midnight. Seas 2 to 3 ft. Wave Detail: W 2 ft at
6 seconds.
.SAT...W winds around 5 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: S 2 ft at 7 seconds.
.SAT NIGHT...S winds 5 to 10 kt. Seas around 2 ft. A chance of
showers after midnight.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
.SUN NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft.
.MON...SW winds around 5 kt, becoming S in the afternoon. Seas
around 2 ft.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft.

$$


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