• CLASSIC IWINDSURF
    Classic myiWindsurfClassic Wind & Weather maps and graphs
Hello Guest
 • 

Classic iWindsurf
kiter? see iKitesurf.com
Grab the iWindsurf Mobile App & Sign On to the New iWindsurf Website
Hi guest · Get your free membership now · Log In ·
MA- Cape Cod

Human Forecasts
 > Daily Briefing
 > Forecast Blog

Real-Time Data
 > Dynamic Map
 > Wind Obs Map
 > Radar + Satellite Map
 > Wind Obs Summary

Computer Forecasts
 > Model Tables
 > Wind Vector Fx Map
 > Wind FlowViz Fx Map

More Maps

Other Resources
Wind Graphs
Meteograms

Watches/Warnings
>None Active

New iWindsurf: Select your region for wind observations & forecasts:
North America | Europe | South America | Australia & Oceania | Asia | Africa

fzus51 kbox 082105
cwfbox
expires:202511091000;;078388

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm est sat nov 8 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz231-091000-
cape cod bay-
405 pm est sat nov 8 2025

.tonight...nw winds 5 to 10 kt, becoming n after midnight. seas
around 2 ft this evening, then 1 foot or less. wave detail: s
2 ft at 8 seconds and nw 1 foot at 3 seconds, becoming nw 1 foot
at 3 seconds and e 1 foot at 5 seconds. 
.sun...e winds 5 to 10 kt, becoming se 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: se 2 ft
at 3 seconds and s 2 ft at 7 seconds. rain likely in the
afternoon with vsby 1 to 3 nm. 
.sun night...se winds 15 to 20 kt, becoming s 10 to 15 kt after
midnight. gusts up to 25 kt. seas 2 to 3 ft. wave detail: se 3 ft
at 3 seconds and s 2 ft at 7 seconds. rain likely, mainly in the
evening with vsby 1 to 3 nm. 
.mon...s winds around 10 kt. seas around 2 ft. wave detail: e
2 ft at 5 seconds and se 2 ft at 8 seconds. rain likely. vsby
1 to 3 nm in the morning. 
.mon night...w winds 10 to 15 kt with gusts up to 20 kt. seas
2 to 3 ft. wave detail: s 3 ft at 8 seconds and w 2 ft at
3 seconds. rain likely in the evening. 
.tue...w winds 15 to 20 kt with gusts up to 25 kt, increasing to
25 to 30 kt with gusts up to 40 kt in the afternoon. seas 2 to
4 ft. wave detail: w 4 ft at 4 seconds and s 2 ft at 8 seconds. 
.tue night...w winds 25 to 30 kt. gusts up to 40 kt in the
evening. seas 3 to 5 ft. 
.wed through thu night...w winds 20 to 25 kt with gusts up to
30 kt. seas 3 to 4 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.

$$
fzus51 kbox 082105
cwfbox
expires:202511091000;;078392

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm est sat nov 8 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz232-091000-
nantucket sound-
405 pm est sat nov 8 2025

.tonight...nw winds around 10 kt, becoming n after midnight. seas
2 to 3 ft. wave detail: s 2 ft at 8 seconds and w 1 foot at
3 seconds. 
.sun...e winds 10 to 15 kt, becoming se 15 to 20 kt in the
afternoon. seas 2 to 3 ft. wave detail: se 2 ft at 4 seconds and
nw 1 foot at 3 seconds. rain likely in the afternoon with vsby
1 to 3 nm. 
.sun night...se winds 15 to 20 kt with gusts up to 25 kt,
becoming s 10 to 15 kt after midnight. seas 2 to 4 ft. wave
detail: s 3 ft at 4 seconds and s 2 ft at 7 seconds. a chance of
rain. vsby 1 to 3 nm in the evening. 
.mon...s winds 10 to 15 kt. seas 2 to 4 ft. wave detail: sw 2 ft
at 3 seconds and se 2 ft at 8 seconds. rain likely. vsby 1 to
3 nm in the morning. 
.mon night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: w 3 ft at 4 seconds and s 3 ft at
8 seconds. rain likely in the evening. 
.tue...w winds 20 to 25 kt with gusts up to 30 kt, increasing to
25 to 35 kt with gusts up to 40 kt in the afternoon. seas 4 to
6 ft. wave detail: w 5 ft at 5 seconds and sw 4 ft at 8 seconds. 
.tue night...w winds 30 to 35 kt, becoming 25 to 35 kt after
midnight. seas 5 to 8 ft. 
.wed...sw winds 25 to 30 kt with gusts up to 35 kt. seas 5 to
7 ft. a chance of showers. 
.wed night...w winds 25 to 30 kt. seas 4 to 6 ft. a chance of
showers. 
.thu...w winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. 
.thu night...nw winds 20 to 25 kt with gusts up to 30 kt. seas
3 to 5 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.

$$
fzus51 kbox 082105
cwfbox
expires:202511091000;;078393

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm est sat nov 8 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz233-091000-
vineyard sound-
405 pm est sat nov 8 2025

.tonight...nw winds 5 to 10 kt, becoming n after midnight. seas
2 to 3 ft. wave detail: sw 3 ft at 7 seconds and nw 1 foot at
3 seconds. 
.sun...e winds 10 to 15 kt, becoming se 15 to 20 kt in the
afternoon. seas 2 to 3 ft. wave detail: se 2 ft at 3 seconds and
s 2 ft at 7 seconds. a chance of rain in the morning, then rain
in the afternoon with vsby 1 to 3 nm. 
.sun night...se winds 15 to 20 kt with gusts up to 25 kt,
becoming s 10 to 15 kt after midnight. seas 2 to 4 ft. wave
detail: s 2 ft at 4 seconds and s 2 ft at 7 seconds. a chance of
rain. vsby 1 to 3 nm in the evening. 
.mon...sw winds 10 to 15 kt. seas 2 to 4 ft. wave detail: s 3 ft
at 8 seconds and sw 1 foot at 3 seconds. rain likely. vsby 1 to
3 nm in the morning. 
.mon night...w winds 15 to 20 kt with gusts up to 25 kt. seas
3 to 5 ft. wave detail: sw 4 ft at 8 seconds and w 3 ft at
4 seconds. a chance of rain in the evening. 
.tue and tue night...w winds 25 to 35 kt with gusts up to 40 kt.
seas 5 to 7 ft. wave detail: sw 7 ft at 8 seconds and w 4 ft at
5 seconds. 
.wed...sw winds 25 to 30 kt with gusts up to 35 kt. seas 6 to
9 ft. 
.wed night and thu...w winds 25 to 30 kt, diminishing to 20 to
25 kt. seas 5 to 8 ft. 
.thu night...w winds 20 to 25 kt. seas 4 to 6 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.

$$
fzus51 kbox 082105
cwfbox
expires:202511091000;;078394

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm est sat nov 8 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz234-091000-
buzzards bay-
405 pm est sat nov 8 2025

.tonight...nw winds 5 to 10 kt, becoming n after midnight. seas
2 to 3 ft. wave detail: sw 2 ft at 7 seconds and nw 1 foot at
3 seconds. 
.sun...e winds 5 to 10 kt, becoming se 15 to 20 kt with gusts up
to 25 kt in the afternoon. seas 2 to 3 ft. wave detail: se 2 ft
at 3 seconds and sw 2 ft at 7 seconds. rain in the afternoon with
vsby 1 to 3 nm. 
.sun night...se winds 15 to 20 kt with gusts up to 25 kt,
becoming s 10 to 15 kt after midnight. seas 2 to 3 ft. wave
detail: s 2 ft at 3 seconds and s 2 ft at 7 seconds. a chance of
rain. vsby 1 to 3 nm in the evening. 
.mon...sw winds 10 to 15 kt. seas 2 to 3 ft. wave detail: se 2 ft
at 7 seconds and sw 1 foot at 3 seconds. rain likely. vsby 1 to
3 nm in the morning. 
.mon night...w winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 25 kt. seas 2 to 4 ft. wave detail: s 3 ft
at 8 seconds and sw 2 ft at 4 seconds. a chance of rain in the
evening. 
.tue and tue night...w winds 25 to 30 kt with gusts up to 40 kt.
seas 4 to 6 ft. wave detail: sw 6 ft at 8 seconds and w 4 ft at
5 seconds. 
.wed and wed night...sw winds 25 to 30 kt, becoming w 20 to
25 kt. seas 4 to 6 ft. 
.thu and thu night...w winds 15 to 20 kt with gusts up to 25 kt.
seas 3 to 5 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.

$$
fzus51 kbox 082105
cwfbox
expires:202511091000;;078395

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm est sat nov 8 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz235-091000-
rhode island sound-
405 pm est sat nov 8 2025

...small craft advisory in effect until 7 pm est this evening...

.tonight...nw winds 10 to 15 kt, becoming n 5 to 10 kt after
midnight. seas 3 to 4 ft. wave detail: s 4 ft at 8 seconds and nw
1 foot at 3 seconds. 
.sun...e winds 10 to 15 kt, becoming se 15 to 20 kt with gusts up
to 25 kt in the afternoon. seas 2 to 4 ft. wave detail: s 4 ft at
7 seconds and se 3 ft at 4 seconds. a chance of rain in the
morning, then rain in the afternoon with vsby 1 to 3 nm. 
.sun night...se winds 15 to 20 kt with gusts up to 25 kt,
becoming s 10 to 15 kt after midnight. seas 3 to 5 ft. wave
detail: se 4 ft at 7 seconds and se 1 foot at 10 seconds. rain
likely, mainly in the evening with vsby 1 to 3 nm. 
.mon...s winds around 10 kt, becoming sw in the afternoon. seas
3 to 5 ft. wave detail: se 4 ft at 6 seconds and w 1 foot at
3 seconds. rain likely. vsby 1 to 3 nm in the morning. 
.mon night...w winds 15 to 20 kt with gusts up to 25 kt. seas
4 to 6 ft. wave detail: s 5 ft at 8 seconds and w 3 ft at
4 seconds. a chance of rain in the evening. 
.tue and tue night...w winds 25 to 30 kt with gusts up to 40 kt.
seas 6 to 9 ft. wave detail: sw 9 ft at 9 seconds and w 5 ft at
6 seconds. 
.wed...sw winds 25 to 30 kt with gusts up to 35 kt. seas 7 to
10 ft. 
.wed night...w winds 25 to 30 kt. seas 6 to 9 ft. 
.thu and thu night...w winds 20 to 25 kt with gusts up to 30 kt.
seas 5 to 8 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.

$$
fzus51 kbox 082105
cwfbox
expires:202511091000;;078398

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm est sat nov 8 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz236-091000-
narragansett bay-
405 pm est sat nov 8 2025

.tonight...nw winds 5 to 10 kt, becoming n after midnight. waves
2 to 3 ft. 
.sun...e winds 5 to 10 kt, becoming se 10 to 15 kt with gusts up
to 20 kt in the afternoon. waves 2 to 3 ft. rain likely in the
afternoon with vsby 1 to 3 nm. 
.sun night...se winds 10 to 15 kt with gusts up to 20 kt,
becoming s 5 to 10 kt after midnight. waves 2 to 3 ft. rain
likely, mainly in the evening with vsby 1 to 3 nm. 
.mon...s winds 5 to 10 kt, becoming w in the afternoon. waves
2 to 3 ft. rain likely. vsby 1 to 3 nm in the morning. 
.mon night...w winds 10 to 15 kt with gusts up to 20 kt. waves
2 to 3 ft. a chance of rain in the evening. 
.tue...w winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. gusts up to 30 kt. waves 2 to 3 ft, except 4 to 6 ft
at the bay entrance. 
.tue night...w winds 20 to 25 kt, diminishing to 15 to 20 kt
after midnight. gusts up to 30 kt. waves 3 to 5 ft.
.wed and wed night...sw winds 20 to 25 kt, becoming w 15 to
20 kt. gusts up to 30 kt. waves 3 to 5 ft. 
.thu and thu night...w winds 15 to 20 kt, diminishing to 10 to
15 kt. gusts up to 25 kt. waves 2 to 4 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.

$$
fzus51 kbox 082105
cwfbox
expires:202511091000;;078386

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm est sat nov 8 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz250-091000-
coastal waters east of ipswich bay and the stellwagen bank
national marine sanctuary-
405 pm est sat nov 8 2025

.tonight...nw winds around 10 kt, becoming n after midnight. seas
2 to 3 ft. wave detail: nw 2 ft at 3 seconds and se 2 ft at
9 seconds. 
.sun...e winds 5 to 10 kt, becoming se 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 3 ft. wave detail: e 3 ft at
4 seconds and se 2 ft at 7 seconds. rain likely in the afternoon
with vsby 1 to 3 nm. 
.sun night...e winds 15 to 20 kt, becoming se after midnight.
gusts up to 30 kt. seas 3 to 5 ft. wave detail: se 5 ft at
7 seconds and se 1 foot at 10 seconds. rain likely, mainly in the
evening with vsby 1 to 3 nm. 
.mon...s winds around 10 kt, becoming se in the afternoon. seas
3 to 5 ft. wave detail: e 5 ft at 7 seconds and se 3 ft at
8 seconds. rain. vsby 1 nm or less in the morning. 
.mon night...w winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. gusts up to 25 kt. seas 4 to 5 ft. wave detail: w 4 ft
at 4 seconds and se 4 ft at 8 seconds. rain likely in the
evening. 
.tue and tue night...w winds 25 to 30 kt with gusts up to 40 kt.
seas 5 to 7 ft. wave detail: w 7 ft at 7 seconds and se 3 ft at
8 seconds. 
.wed...sw winds 20 to 25 kt with gusts up to 30 kt. seas 4 to
6 ft. 
.wed night through thu night...nw winds around 20 kt with gusts
up to 30 kt. seas 3 to 5 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.

$$
fzus51 kbox 082105
cwfbox
expires:202511091000;;078389

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm est sat nov 8 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz254-091000-
coastal waters from provincetown ma to chatham ma to nantucket ma
out 20 nm-
405 pm est sat nov 8 2025

...small craft advisory in effect until 10 pm est this evening...

.tonight...nw winds 5 to 10 kt, becoming n after midnight. seas
2 to 4 ft. wave detail: s 4 ft at 8 seconds and nw 1 foot at
4 seconds. 
.sun...e winds 5 to 10 kt, becoming se 10 to 15 kt with gusts up
to 20 kt in the afternoon. seas 2 to 4 ft. wave detail: ne 3 ft
at 4 seconds and s 3 ft at 7 seconds. rain likely in the
afternoon with vsby 1 to 3 nm. 
.sun night...se winds 15 to 20 kt, becoming s 10 to 15 kt after
midnight. gusts up to 25 kt. seas 3 to 5 ft. wave detail: se 5 ft
at 6 seconds and se 1 foot at 10 seconds. rain likely, mainly in
the evening with vsby 1 to 3 nm. 
.mon...s winds around 10 kt. seas 4 to 6 ft. wave detail: se 4 ft
at 7 seconds. rain. vsby 1 nm or less in the morning. 
.mon night...sw winds 10 to 15 kt, becoming w 15 to 20 kt after
midnight. gusts up to 25 kt. seas 5 to 7 ft. wave detail: se 5 ft
at 8 seconds and w 3 ft at 4 seconds. rain likely in the evening,
then a chance of showers after midnight. 
.tue...w winds 20 to 25 kt, increasing to 25 to 30 kt in the
afternoon. seas 5 to 7 ft, building to 6 to 9 ft in the
afternoon. s and e of nantucket, seas 8 to 11 ft, building to
9 to 13 ft in the afternoon. wave detail: s 5 ft at 8 seconds and
w 4 ft at 5 seconds, becoming w 6 ft at 5 seconds and sw 4 ft at
8 seconds. a chance of showers in the afternoon. 
.tue night...w winds 25 to 30 kt with gusts up to 40 kt. seas
7 to 10 ft, except 10 to 14 ft s and e of nantucket. 
.wed and wed night...sw winds 25 to 30 kt, becoming w 20 to
25 kt. seas 6 to 9 ft, except 9 to 13 ft s and e of nantucket. a
chance of showers. 
.thu and thu night...w winds 20 to 25 kt with gusts up to 30 kt.
seas 5 to 7 ft. s and e of nantucket, seas 8 to 11 ft, subsiding
to 6 to 9 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 082105
cwfbox
expires:202511091000;;078390

coastal waters forecast for massachusetts and rhode island
national weather service boston/norton ma
405 pm est sat nov 8 2025

coastal waters from the merrimack river ma to watch hill ri out
to 25 nm


anz255-091000-
coastal waters extending out to 25 nm south of marthas vineyard
and nantucket-
405 pm est sat nov 8 2025

...small craft advisory in effect until 4 am est sunday...

.tonight...nw winds around 10 kt, becoming n after midnight. seas
3 to 5 ft. wave detail: s 5 ft at 7 seconds and nw 1 foot at
3 seconds. 
.sun...e winds 10 to 15 kt, becoming se 15 to 20 kt with gusts up
to 25 kt in the afternoon. seas 3 to 4 ft. wave detail: s 4 ft at
7 seconds and se 3 ft at 4 seconds. a chance of rain in the
morning, then rain in the afternoon with vsby 1 to 3 nm. 
.sun night...se winds 20 to 25 kt, becoming s 10 to 15 kt after
midnight. seas 3 to 5 ft. wave detail: se 5 ft at 6 seconds and
se 1 foot at 10 seconds. rain likely, mainly in the evening with
vsby 1 to 3 nm. 
.mon...s winds 10 to 15 kt. seas 4 to 6 ft. wave detail: s 5 ft
at 8 seconds and e 2 ft at 6 seconds. rain likely. vsby 1 nm or
less in the morning. 
.mon night...w winds 15 to 20 kt, increasing to 20 to 25 kt after
midnight. seas 6 to 9 ft. wave detail: sw 6 ft at 7 seconds and e
2 ft at 6 seconds. rain likely in the evening. 
.tue...w winds 25 to 35 kt. seas 7 to 10 ft, building to 9 to
13 ft in the afternoon. wave detail: sw 8 ft at 7 seconds and se
3 ft at 9 seconds, becoming w 11 ft at 7 seconds and se 3 ft at
10 seconds. a chance of showers. 
.tue night...w winds 30 to 40 kt. seas 10 to 14 ft. 
.wed and wed night...sw winds 30 to 35 kt, becoming w 25 to
35 kt. seas 9 to 13 ft. a chance of showers. 
.thu...w winds 25 to 30 kt. seas 8 to 11 ft. a chance of showers.
.thu night...nw winds 25 to 30 kt. seas 6 to 9 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.

$$
© Copyright 2025 WeatherFlow, Inc · Contact Us ·