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coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 am edt wed aug 12 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz230-121800-
boston harbor-
105 am edt wed aug 12 2026

.rest of tonight...nw winds around 5 kt. waves 1 foot or less. 
.wed...n winds around 5 kt, becoming se in the afternoon. waves
1 foot or less. 
.wed night...s winds 5 to 10 kt, becoming w after midnight. waves
1 foot or less. 
.thu...sw winds around 5 kt. waves 1 foot or less. a chance of
showers in the afternoon. 
.thu night...w winds 5 to 10 kt. waves 1 foot or less.
.fri and fri night...nw winds 5 to 10 kt. waves around 2 ft. 
.sat through sun...sw winds 5 to 10 kt. waves around 2 ft. 
.sun night...s winds around 10 kt. waves 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.

$$

fzus51 kbox 120506
cwfbox
expires:202608121800;;037104

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
105 am edt wed aug 12 2026

coastal waters from the merrimack river ma to watch hill ri out
to 60 nm


anz250-121800-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
105 am edt wed aug 12 2026

.rest of tonight...nw winds around 5 kt. seas 1 foot or less.
wave detail: n 1 foot at 3 seconds and s 1 foot at 6 seconds. 
.wed...nw winds around 5 kt, becoming se in the afternoon. seas
1 foot or less. wave detail: nw 1 foot at 3 seconds and s 1 foot
at 6 seconds. 
.wed night...s winds 5 to 10 kt, becoming sw after midnight. seas
around 2 ft. wave detail: sw 2 ft at 4 seconds and n 1 foot at
3 seconds. 
.thu...sw winds around 5 kt. seas around 2 ft. wave detail: e
1 foot at 2 seconds and sw 1 foot at 3 seconds. a chance of
showers in the afternoon. 
.thu night through fri night...nw winds 10 to 15 kt with gusts up
to 20 kt. seas 2 to 3 ft. wave detail: n 3 ft at 5 seconds and s
1 foot at 3 seconds. 
.sat...n winds 10 to 15 kt with gusts up to 20 kt. seas 2 to
4 ft. wave detail: n 3 ft at 5 seconds and s 1 foot at 7 seconds.
.sat night and sun...sw winds 5 to 10 kt. seas around 2 ft. 
.sun night...s winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 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.

$$