125
FZUS51 KBOX 261405
CWFBOX

Coastal Waters Forecast for Massachusetts and Rhode Island
National Weather Service Boston/Norton MA
1005 AM EDT Sat Jul 26 2025

Coastal waters from the Merrimack River MA to Watch Hill RI out
to 25 NM

ANZ200-270300-
1005 AM EDT Sat Jul 26 2025

.Synopsis for Massachusetts and Rhode Island coastal waters...
High pressure moves offshore Friday morning, a cold front will move
into New England during the afternoon, crossing the waters overnight
into Saturday morning. Low pressure system crosses the waters Monday.

$$

ANZ250-270300-
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...N winds around 10 kt with gusts up to 20 kt,
becoming NE. Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and
S 1 foot at 6 seconds. Hazy with areas of smoke.
.TONIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas around
2 ft. Wave Detail: NE 1 foot at 4 seconds and S 1 foot at
5 seconds.
.SUN...S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to
3 ft. Wave Detail: SW 2 ft at 3 seconds and NE 1 foot at
4 seconds. A chance of showers in the afternoon.
.SUN NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Gusts up to 20 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 4 seconds and SE 1 foot at 8 seconds. A chance of showers in
the evening.
.MON...W winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SW 1 foot at 3 seconds and SE 1 foot at
8 seconds.
.MON NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 3 seconds and W 1 foot at 2 seconds.
.TUE THROUGH WED...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ251-270300-
Massachusetts Bay and Ipswich Bay-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds 5 to 10 kt with gusts up to 20 kt,
becoming E. Seas around 2 ft. Wave Detail: NE 1 foot at 4 seconds
and S 1 foot at 5 seconds. Hazy with areas of smoke.
.TONIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the evening.
Seas around 2 ft. Wave Detail: NE 1 foot at 4 seconds and S
1 foot at 4 seconds.
.SUN...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and NE
1 foot at 4 seconds. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: SE 1 foot at 4 seconds
and E 1 foot at 8 seconds. A chance of showers in the evening.
.MON...NW winds around 5 kt, becoming E in the afternoon. Seas
around 2 ft. Wave Detail: W 1 foot at 2 seconds and SE 1 foot at
4 seconds.
.MON NIGHT...S winds around 10 kt. Seas around 2 ft. Wave Detail:
SE 2 ft at 3 seconds and E 1 foot at 8 seconds.
.TUE THROUGH WED...NE winds 5 to 10 kt. Seas around 2 ft.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ231-270300-
Cape Cod Bay-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds 5 to 10 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: N 1 foot at 4 seconds and S 1 foot
at 5 seconds. Hazy with areas of smoke.
.TONIGHT...S winds around 5 kt. Seas 1 foot or less. Wave Detail:
N 1 foot at 4 seconds and S 1 foot at 5 seconds.
.SUN...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and N 1 foot
at 4 seconds. A chance of showers.
.SUN NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: S 1 foot at 2 seconds and
E 1 foot at 4 seconds. A chance of showers.
.MON...W winds 5 to 10 kt, becoming E in the afternoon. Seas
1 foot or less. Wave Detail: W 1 foot at 2 seconds and SE 1 foot
at 4 seconds.
.MON NIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: NW 1 foot at 2 seconds and SE 1 foot at 3 seconds.
.TUE THROUGH WED...N winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. A chance
of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ254-270300-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: N 3 ft at 4 seconds and N 2 ft at
4 seconds. Hazy with areas of smoke.
.TONIGHT...SE winds around 5 kt, becoming S after midnight. Seas
2 to 3 ft. Wave Detail: N 2 ft at 5 seconds and S 1 foot at
5 seconds.
.SUN...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
up to 20 kt in the afternoon. Seas around 2 ft. Wave Detail: S
2 ft at 3 seconds and N 2 ft at 5 seconds.
.SUN NIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Gusts up to 20 kt. Seas around 2 ft. Wave Detail: SW
2 ft at 3 seconds and NE 1 foot at 4 seconds. A chance of
showers. Patchy fog after midnight with vsby 1 to 3 NM.
.MON...SW winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: W 1 foot at 3 seconds and SE 1 foot at
3 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.MON NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
SE 1 foot at 3 seconds and E 1 foot at 8 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ255-270300-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SW 2 ft at
5 seconds. Hazy with areas of smoke.
.TONIGHT...E winds 5 to 10 kt, becoming S after midnight. Seas
around 2 ft. Wave Detail: NE 2 ft at 4 seconds and SW 1 foot at
5 seconds.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
1 foot at 5 seconds and NE 1 foot at 5 seconds.
.SUN NIGHT...S winds 5 to 10 kt with gusts up to 20 kt. Seas
around 2 ft. Wave Detail: S 2 ft at 3 seconds and NE 1 foot at
5 seconds. Patchy fog after midnight. A chance of showers after
midnight with vsby 1 to 3 NM.
.MON...W winds 5 to 10 kt, becoming SE in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and W 1 foot at
3 seconds. Patchy fog in the morning. A chance of showers in the
morning with vsby 1 to 3 NM.
.MON NIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and SE 1 foot at
3 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ256-270300-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: NE 2 ft at 4 seconds and SW 2 ft at
5 seconds. Hazy with areas of smoke.
.TONIGHT...SE winds 5 to 10 kt. Seas around 2 ft. Wave Detail: E
2 ft at 4 seconds and S 1 foot at 5 seconds.
.SUN...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: S 2 ft at 3 seconds and E 1 foot
at 3 seconds. A chance of showers in the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and
SE 2 ft at 8 seconds. A chance of showers. Patchy fog after
midnight with vsby 1 to 3 NM.
.MON...NW winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: SE 2 ft at 8 seconds and NW 1 foot at
2 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.MON NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 2 ft at 8 seconds and SE 1 foot at 3 seconds.
.TUE THROUGH WED...W winds 10 to 15 kt. Seas 2 to 3 ft.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ232-270300-
Nantucket Sound-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: N 2 ft at 4 seconds and SW 1 foot at
5 seconds. Hazy with areas of smoke.
.TONIGHT...SE winds 5 to 10 kt, becoming S after midnight. Seas
around 2 ft in the evening, then 1 foot or less. Wave Detail: NE
1 foot at 4 seconds and S 1 foot at 5 seconds, becoming S 1 foot
at 5 seconds and NE 1 foot at 5 seconds.
.SUN...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: S 1 foot at 3 seconds and NE
1 foot at 5 seconds.
.SUN NIGHT...SW winds 5 to 10 kt with gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: S 1 foot at 3 seconds and NE 1 foot at
5 seconds. A chance of showers. Vsby 1 to 3 NM after midnight.
.MON...W winds 5 to 10 kt, becoming S in the afternoon. Seas
1 foot or less. Wave Detail: SW 1 foot at 3 seconds and E 1 foot
at 3 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.MON NIGHT...S winds around 10 kt. Seas 1 foot or less, then
around 2 ft after midnight. Wave Detail: SE 1 foot at 3 seconds
and SE 1 foot at 8 seconds, becoming SW 1 foot at 3 seconds and
SE 1 foot at 3 seconds.
.TUE THROUGH WED NIGHT...SW winds 10 to 15 kt with gusts up to
20 kt. Seas around 2 ft.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ233-270300-
Vineyard Sound-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds 5 to 10 kt. Gusts up to 20 kt. Seas
around 2 ft. Wave Detail: N 1 foot at 4 seconds and SW 1 foot at
5 seconds. Hazy with areas of smoke.
.TONIGHT...S winds around 5 kt. Seas around 2 ft in the evening,
then 1 foot or less. Wave Detail: NE 1 foot at 4 seconds and S
1 foot at 5 seconds, becoming E 1 foot at 3 seconds and S 1 foot
at 4 seconds.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
1 foot at 3 seconds and E 1 foot at 4 seconds. A chance of
showers in the afternoon.
.SUN NIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: S
1 foot at 3 seconds and SE 1 foot at 8 seconds. A chance of
showers. Patchy fog after midnight.
.MON...NW winds 5 to 10 kt, becoming S in the afternoon. Seas
1 foot or less. Wave Detail: W 1 foot at 3 seconds and SE 1 foot
at 8 seconds. Patchy fog in the morning.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TUE THROUGH WED...W winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ234-270300-
Buzzards Bay-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds 5 to 10 kt. Gusts up to 20 kt. Seas
around 2 ft. Wave Detail: N 1 foot at 4 seconds and SW 1 foot at
5 seconds. Hazy with areas of smoke.
.TONIGHT...S winds 5 to 10 kt. Seas 1 foot or less. Wave Detail:
NE 1 foot at 3 seconds and S 1 foot at 5 seconds.
.SUN...S winds 5 to 10 kt. Gusts up to 20 kt in the afternoon.
Seas around 2 ft. Wave Detail: S 1 foot at 3 seconds and NE
1 foot at 4 seconds. A chance of showers in the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 3 seconds and E 1 foot at 4 seconds. A chance of
showers. Patchy fog after midnight.
.MON...NW winds 5 to 10 kt, becoming S in the afternoon. Seas
1 foot or less. Wave Detail: W 1 foot at 3 seconds and E 1 foot
at 3 seconds. Patchy fog in the morning.
.MON NIGHT...SW winds 5 to 10 kt. Seas 1 foot or less. Wave
Detail: SE 1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TUE THROUGH WED...NW winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ235-270300-
Rhode Island Sound-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds 5 to 10 kt. Gusts up to 20 kt. Seas
2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and S 2 ft at
6 seconds. Hazy with areas of smoke.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
1 foot at 4 seconds and SE 1 foot at 8 seconds.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of
showers in the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and
SE 1 foot at 8 seconds. A chance of showers. Patchy fog after
midnight with vsby 1 to 3 NM.
.MON...NW winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: NW 1 foot at 2 seconds and S 1 foot at
4 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.MON NIGHT...SW winds around 10 kt. Seas around 2 ft. Wave
Detail: SE 1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TUE THROUGH WED...W winds 10 to 15 kt with gusts up to 20 kt.
Seas around 2 ft.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ237-270300-
Block Island Sound-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds around 10 kt with gusts up to 20 kt,
becoming E. Seas 2 to 3 ft. Wave Detail: S 2 ft at 6 seconds and
NE 1 foot at 3 seconds. Hazy with areas of smoke.
.TONIGHT...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
1 foot at 4 seconds and SE 1 foot at 8 seconds.
.SUN...S winds 5 to 10 kt. Seas around 2 ft. Wave Detail: SE
1 foot at 4 seconds and SE 1 foot at 8 seconds. A chance of
showers in the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. Gusts up to 20 kt in the
evening. Seas around 2 ft. Wave Detail: S 2 ft at 4 seconds and
SE 1 foot at 8 seconds. A chance of showers. Patchy fog after
midnight with vsby 1 to 3 NM.
.MON...N winds 5 to 10 kt, becoming S in the afternoon. Seas
around 2 ft. Wave Detail: N 1 foot at 2 seconds and S 1 foot at
4 seconds. Patchy fog in the morning with vsby 1 to 3 NM.
.MON NIGHT...SW winds 5 to 10 kt. Seas around 2 ft. Wave Detail:
S 1 foot at 3 seconds and SE 1 foot at 8 seconds.
.TUE THROUGH WED...SW winds 10 to 15 kt. Seas around 2 ft.
.WED NIGHT...SW winds around 10 kt. Seas around 2 ft. A chance of
showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ230-270300-
Boston Harbor-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...E winds 5 to 10 kt. Waves 1 foot or less. Hazy
with areas of smoke.
.TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.SUN...S winds 5 to 10 kt. Waves around 2 ft. A chance of showers
in the morning. Showers likely in the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. Waves around 2 ft in the
evening, then 1 foot or less.
.MON...NW winds around 5 kt, becoming E in the afternoon. Waves
1 foot or less.
.MON NIGHT...S winds around 10 kt, becoming SW after midnight.
Waves 1 foot or less.
.TUE THROUGH WED...NE winds 5 to 10 kt. Waves around 2 ft.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

ANZ236-270300-
Narragansett Bay-
1005 AM EDT Sat Jul 26 2025

.THIS AFTERNOON...NE winds around 10 kt, becoming E. Waves around
2 ft. Hazy with areas of smoke.
.TONIGHT...S winds 5 to 10 kt. Waves 1 foot or less.
.SUN...S winds 5 to 10 kt. Waves around 2 ft. A chance of
showers.
.SUN NIGHT...S winds 5 to 10 kt, becoming SW after midnight.
Waves around 2 ft in the evening, then 1 foot or less. A chance
of showers. Patchy fog after midnight.
.MON...NW winds 5 to 10 kt, becoming S in the afternoon. Waves
1 foot or less. Patchy fog in the morning.
.MON NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less.
.TUE THROUGH WED...W winds 10 to 15 kt. Waves around 2 ft.
.WED NIGHT...SW winds 5 to 10 kt. Waves 1 foot or less. A chance
of showers.

Seas are reported as significant wave height, which is the
average of the highest third of the waves. Individual wave
heights may be more than twice the significant wave height.

$$

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