Cape Ann's Marina, MA
08/17/2026 01:00 PM
71°F
TEMPERATURE
Winds 12 mph S
Chance Rain Showers
A chance of rain showers and patchy fog. Mostly cloudy, with a high near 72. Southeast wind 8 to 12 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Moonrise
12:25 PM
Moonset
10:44 PM
Sunrise
05:51 AM
Moon Phase
Waxing crescent
Sunset
07:42 PM

Hourly Forecast

Mon, 01:00 PM

Chance Rain Showers
Winds: 12 mph S
71°

Mon, 02:00 PM

Chance Rain Showers
Winds: 10 mph SE
72°

Mon, 03:00 PM

Chance Rain Showers
Winds: 10 mph SE
72°

Mon, 04:00 PM

Chance Rain Showers
Winds: 9 mph SE
72°

Mon, 05:00 PM

Chance Rain Showers
Winds: 8 mph SE
72°

Mon, 06:00 PM

Chance Rain Showers
Winds: 7 mph SE
71°

Mon, 07:00 PM

Chance Rain Showers
Winds: 6 mph SE
71°

Mon, 08:00 PM

Chance Rain Showers
Winds: 5 mph SE
70°

Mon, 09:00 PM

Chance Rain Showers
Winds: 3 mph E
69°

Mon, 10:00 PM

Chance Rain Showers
Winds: 3 mph E
69°

Mon, 11:00 PM

Chance Rain Showers
Winds: 2 mph NE
68°

Tue, 12:00 AM

Chance Rain Showers
Winds: 2 mph N
68°

Tue, 01:00 AM

Patchy Fog
Winds: 2 mph N
68°

Tue, 02:00 AM

Patchy Fog
Winds: 2 mph N
68°

Tue, 03:00 AM

Patchy Fog
Winds: 2 mph N
68°

Tue, 04:00 AM

Patchy Fog
Winds: 3 mph N
68°

Tue, 05:00 AM

Patchy Fog
Winds: 3 mph N
68°

Tue, 06:00 AM

Patchy Fog
Winds: 3 mph N
67°

Tue, 07:00 AM

Patchy Fog
Winds: 5 mph N
68°

Tue, 08:00 AM

Patchy Fog
Winds: 5 mph N
68°

Tue, 09:00 AM

Patchy Fog
Winds: 6 mph N
69°

Tue, 10:00 AM

Cloudy
Winds: 7 mph N
70°

Tue, 11:00 AM

Mostly Cloudy
Winds: 7 mph N
71°

Tue, 12:00 PM

Partly Sunny
Winds: 7 mph N
71°

This Afternoon

Chance Rain Showers
72°
Winds: 8 to 12 mph SE
A chance of rain showers and patchy fog. Mostly cloudy, with a high near 72. Southeast wind 8 to 12 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

Tonight

Chance Rain Showers
67°
Winds: 2 to 7 mph NE
A chance of rain showers and patchy fog before 1am, then patchy fog and a slight chance of rain showers. Mostly cloudy, with a low around 67. Northeast wind 2 to 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Tuesday

Patchy Fog then Partly Sunny
72°
Winds: 3 to 7 mph N
Patchy fog before 10am. Partly sunny, with a high near 72. North wind 3 to 7 mph.

Tuesday Night

Partly Cloudy
66°
Winds: 3 mph E
Partly cloudy, with a low around 66. East wind around 3 mph.

Wednesday

Mostly Sunny
79°
Winds: 1 to 8 mph SW
Mostly sunny, with a high near 79. Southwest wind 1 to 8 mph.

Wednesday Night

Mostly Clear
68°
Winds: 3 to 8 mph SW
Mostly clear, with a low around 68. Southwest wind 3 to 8 mph.

Thursday

Slight Chance Rain Showers
77°
Winds: 6 mph N
A slight chance of rain showers after 9am. Mostly sunny, with a high near 77. North wind around 6 mph.

Thursday Night

Slight Chance Rain Showers
64°
Winds: 5 mph W
A slight chance of rain showers before 1am. Partly cloudy, with a low around 64. West wind around 5 mph.

Friday

Mostly Sunny
80°
Winds: 7 mph NE
Mostly sunny, with a high near 80. Northeast wind around 7 mph.

Friday Night

Partly Cloudy then Slight Chance Rain Showers
64°
Winds: 5 mph E
A slight chance of rain showers after 5am. Partly cloudy, with a low around 64. East wind around 5 mph.

Saturday

Chance Rain Showers
79°
Winds: 3 to 7 mph NE
A chance of rain showers. Partly sunny, with a high near 79. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.

Saturday Night

Chance Rain Showers
64°
Winds: 6 mph E
A chance of rain showers. Mostly cloudy, with a low around 64. East wind around 6 mph. Chance of precipitation is 30%.

Sunday

Chance Rain Showers
80°
Winds: 5 to 8 mph E
A chance of rain showers. Partly sunny, with a high near 80. East wind 5 to 8 mph. Chance of precipitation is 40%.

Sunday Night

Chance Rain Showers
64°
Winds: 6 mph S
A chance of rain showers before 4am. Mostly cloudy, with a low around 64. South wind around 6 mph.

Coastal Waters Forecast for Massachusetts and Rhode Island

National Weather Service Boston/Norton MA

for Massachusetts and Rhode Island coastal waters. High pres shifts east of the waters tonight. Low pres then approaches from the west bringing gusty S winds and building seas that have prompted Small Craft Advisories late tonight into Mon. The associated cold front crosses the region late Mon into Mon night. High pres returns Tue and Wed moving off the coast Thu ahead of the next cold front.

Coastal waters from the Merrimack River MA to Watch Hill RI out to 60 NM

Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary

THIS AFTERNOON
S winds 10 to 15 kt with gusts up to 20 kt Seas 3 to 4 ft Wave Detail: S 3 ft at 4 seconds and SE 1 foot at 10 seconds A chance of showers Patchy fog with vsby 1 to 3 NM
TONIGHT
SE winds 5 to 10 kt, becoming NE after midnight Seas 2 to 4 ft Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 10 seconds Patchy fog A chance of showers Vsby 1 NM or less
TUE
N winds 5 to 10 kt Seas 2 to 4 ft Wave Detail: SE 4 ft at 6 seconds and N 1 foot at 2 seconds Patchy fog in the morning with vsby 1 to 3 NM
TUE NIGHT
N winds around 5 kt, becoming NW after midnight Seas 2 to 4 ft Wave Detail: SE 4 ft at 8 seconds and S 2 ft at 7 seconds
WED
SW winds around 5 kt, becoming S in the afternoon Seas 2 to 3 ft Wave Detail: SE 3 ft at 8 seconds and S 2 ft at 7 seconds
WED NIGHT
SW winds 5 to 10 kt Seas around 2 ft Wave Detail: SE 2 ft at 8 seconds and NE 1 foot at 4 seconds
THU THROUGH FRI NIGHT
E winds 5 to 10 kt Seas around 2 ft
Reporting time 10:05 AM EDT Mon Aug 17 2026

Massachusetts Bay and Ipswich Bay

THIS AFTERNOON
S winds 10 to 15 kt with gusts up to 20 kt Seas 2 to 3 ft Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 10 seconds Patchy fog A chance of showers Vsby 1 to 3 NM
TONIGHT
E winds 5 to 10 kt, becoming N after midnight Seas 2 to 3 ft Wave Detail: SE 2 ft at 4 seconds and SE 1 foot at 10 seconds Patchy fog A chance of showers Vsby 1 NM or less
TUE
N winds 5 to 10 kt Seas around 2 ft Wave Detail: N 1 foot at 2 seconds and SE 1 foot at 4 seconds Patchy fog in the morning with vsby 1 to 3 NM
TUE NIGHT
NE winds around 5 kt, becoming W after midnight Seas around 2 ft Wave Detail: E 2 ft at 9 seconds and NE 1 foot at 4 seconds
WED
SW winds around 5 kt, becoming S in the afternoon Seas around 2 ft Wave Detail: S 2 ft at 8 seconds and E 2 ft at 9 seconds
WED NIGHT
SW winds 5 to 10 kt Seas around 2 ft Wave Detail: S 2 ft at 3 seconds and E 2 ft at 7 seconds
THU THROUGH FRI NIGHT
E winds 5 to 10 kt Seas around 2 ft
Reporting time 10:05 AM EDT Mon Aug 17 2026

Cape Cod Bay

THIS AFTERNOON
SE winds 10 to 15 kt with gusts up to 20 kt Seas 2 to 3 ft Wave Detail: SE 2 ft at 10 seconds and E 1 foot at 3 seconds A chance of showers, then showers likely Patchy fog with vsby 1 to 3 NM
TONIGHT
SE winds 5 to 10 kt, becoming N after midnight Seas around 2 ft Wave Detail: SE 2 ft at 10 seconds and SE 1 foot at 3 seconds Patchy fog A chance of showers in the evening Vsby 1 NM or less
TUE
N winds 5 to 10 kt Seas around 2 ft Wave Detail: N 1 foot at 3 seconds and S 1 foot at 7 seconds Patchy fog in the morning with vsby 1 to 3 NM
TUE NIGHT
NW winds around 5 kt Seas around 2 ft Wave Detail: S 2 ft at 7 seconds and N 1 foot at 3 seconds
WED
SW winds 5 to 10 kt Seas around 2 ft in the morning, then 1 foot or less Wave Detail: N 1 foot at 4 seconds and S 1 foot at 7 seconds, becoming W 1 foot at 2 seconds and NE 1 foot at 4 seconds
WED NIGHT
SW winds 5 to 10 kt Seas around 2 ft in the evening, then 1 foot or less Wave Detail: SW 1 foot at 3 seconds and NE 1 foot at 4 seconds, becoming SW 1 foot at 2 seconds and NE 1 foot at 4 seconds
THU
N winds around 5 kt Seas 1 foot or less
THU NIGHT
SW winds around 5 kt Seas 1 foot or less A chance of showers
FRI AND FRI NIGHT
NE winds 5 to 10 kt, becoming E Seas 1 foot or less
Reporting time 10:05 AM EDT Mon Aug 17 2026

Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 NM

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
Reporting time 10:05 AM EDT Mon Aug 17 2026

Coastal Waters extending out to 25 NM South of Marthas Vineyard
and Nantucket

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
Reporting time 10:05 AM EDT Mon Aug 17 2026

Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 NM South of Block Island

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
Reporting time 10:05 AM EDT Mon Aug 17 2026

Nantucket Sound

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
Reporting time 10:05 AM EDT Mon Aug 17 2026

Vineyard Sound

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
Reporting time 10:05 AM EDT Mon Aug 17 2026

Buzzards Bay

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
Reporting time 10:05 AM EDT Mon Aug 17 2026

Rhode Island Sound

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
Reporting time 10:05 AM EDT Mon Aug 17 2026

Block Island Sound

SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING
Reporting time 10:05 AM EDT Mon Aug 17 2026

Boston Harbor

THIS AFTERNOON
SE winds 5 to 10 kt Waves around 2 ft Patchy fog A chance of showers Vsby 1 to 3 NM
TONIGHT
E winds 5 to 10 kt, becoming N after midnight Waves 1 foot or less Patchy fog A chance of showers in the evening Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight
TUE
N winds 5 to 10 kt Waves 1 foot or less Patchy fog in the morning with vsby 1 to 3 NM
TUE NIGHT
E winds around 5 kt, becoming SW after midnight Waves 1 foot or less
WED
SW winds around 5 kt, becoming S in the afternoon Waves 1 foot or less
WED NIGHT
SW winds 5 to 10 kt Waves 1 foot or less
THU AND THU NIGHT
N winds 5 to 10 kt, becoming W Waves 1 foot or less A chance of showers
FRI AND FRI NIGHT
E winds 5 to 10 kt Waves 1 foot or less
Reporting time 10:05 AM EDT Mon Aug 17 2026

Narragansett Bay

THIS AFTERNOON
SE winds 10 to 15 kt with gusts up to 20 kt Waves 2 to 4 ft Patchy fog Showers likely, then a chance of showers with isolated tstms Vsby 1 to 3 NM, decreasing to 1 NM or less
TONIGHT
NE winds 5 to 10 kt, becoming N after midnight Waves 2 to 3 ft Patchy fog Vsby 1 to 3 NM, decreasing to 1 NM or less after midnight
TUE
N winds around 5 kt Waves around 2 ft Patchy fog in the morning with vsby 1 to 3 NM
TUE NIGHT
S winds around 5 kt, becoming NW after midnight Waves around 2 ft
WED AND WED NIGHT
SW winds 5 to 10 kt Waves around 2 ft
THU
W winds 5 to 10 kt Waves around 2 ft
THU NIGHT
W winds 5 to 10 kt Waves around 2 ft A chance of showers
FRI
NE winds 5 to 10 kt Waves 1 foot or less
FRI NIGHT
E winds 5 to 10 kt Waves 1 foot or less A chance of showers
Reporting time 10:05 AM EDT Mon Aug 17 2026

Ocean Waters from the Merrimack River to Plymouth from 40 to
60 NM

THIS AFTERNOON
S winds 10 to 15 kt with gusts up to 20 kt Seas 4 to 5 ft Wave Detail: SW 3 ft at 4 seconds and E 2 ft at 4 seconds A slight chance of showers, then a chance of showers Patchy fog with vsby 1 to 3 NM
TONIGHT
SE winds 10 to 15 kt with gusts up to 20 kt, becoming E 5 to 10 kt after midnight Seas 4 to 5 ft, subsiding to 2 to 4 ft after midnight Wave Detail: SE 3 ft at 5 seconds and SE 1 foot at 9 seconds, becoming SE 3 ft at 5 seconds and SE 2 ft at 9 seconds Patchy fog A chance of showers Vsby 1 NM or less
TUE
N winds 5 to 10 kt Seas 3 to 5 ft Wave Detail: SE 5 ft at 8 seconds and NE 2 ft at 5 seconds Patchy fog in the morning with vsby 1 to 3 NM
TUE NIGHT
N winds 5 to 10 kt, becoming NW after midnight Seas 3 to 4 ft Wave Detail: SE 4 ft at 8 seconds and N 2 ft at 4 seconds
WED AND WED NIGHT
SW winds 10 to 15 kt with gusts up to 20 kt Seas 2 to 3 ft Wave Detail: SE 3 ft at 8 seconds and S 2 ft at 7 seconds
THU THROUGH FRI NIGHT
E winds 5 to 10 kt Seas 2 to 3 ft Wave Detail: SE 3 ft at 8 seconds and N 2 ft at 4 seconds
Reporting time 10:05 AM EDT Mon Aug 17 2026

Ocean Waters from Provincetown to Nantucket from 20 to 60 NM

THIS AFTERNOON
SE winds 10 to 15 kt with gusts up to 20 kt Seas 4 to 5 ft Wave Detail: SW 3 ft at 5 seconds and SE 1 foot at 9 seconds A chance of showers Patchy fog with vsby 1 to 3 NM
TONIGHT
SE winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight Seas 4 to 6 ft Wave Detail: S 4 ft at 7 seconds and SE 4 ft at 9 seconds Patchy fog A chance of showers Vsby 1 NM or less
TUE
NW winds around 10 kt Seas 4 to 6 ft Wave Detail: SE 5 ft at 8 seconds and S 4 ft at 7 seconds Patchy fog in the morning with vsby 1 NM or less
TUE NIGHT
NW winds 5 to 10 kt Seas 3 to 4 ft Wave Detail: SE 4 ft at 8 seconds and S 3 ft at 7 seconds
WED AND WED NIGHT
SW winds 5 to 10 kt Seas 2 to 3 ft Wave Detail: SE 3 ft at 8 seconds and S 2 ft at 7 seconds
THU
SW winds 5 to 10 kt Seas 2 to 3 ft Wave Detail: S 3 ft at 7 seconds and W 1 foot at 3 seconds
THU NIGHT AND FRI
W winds around 5 kt, becoming NE Seas 2 to 3 ft A chance of showers
FRI NIGHT
E winds 5 to 10 kt Seas 2 to 3 ft
Reporting time 10:05 AM EDT Mon Aug 17 2026

Ocean Waters from Marthas Vineyard to Nantucket from 25 to 60 NM

THIS AFTERNOON
S winds 15 to 20 kt with gusts up to 25 kt Seas around 5 ft Wave Detail: SW 5 ft at 6 seconds and E 1 foot at 2 seconds A chance of showers, then showers likely with isolated tstms Patchy fog with vsby 1 to 3 NM
TONIGHT
S winds 10 to 15 kt with gusts up to 20 kt, becoming W 5 to 10 kt after midnight Seas 4 to 5 ft Wave Detail: SW 5 ft at 7 seconds and SE 4 ft at 11 seconds Patchy fog A chance of showers in the evening Vsby 1 NM or less
TUE
NW winds 5 to 10 kt Seas 4 to 5 ft Wave Detail: S 5 ft at 7 seconds and SE 3 ft at 8 seconds Patchy fog in the morning with vsby 1 to 3 NM
TUE NIGHT
NW winds around 5 kt Seas 3 to 4 ft Wave Detail: S 3 ft at 7 seconds and SE 3 ft at 8 seconds
WED AND WED NIGHT
SW winds 5 to 10 kt Seas 2 to 3 ft Wave Detail: S 2 ft at 7 seconds and NW 1 foot at 3 seconds
THU
SW winds 5 to 10 kt Seas 2 to 3 ft Wave Detail: E 2 ft at 9 seconds and NE 1 foot at 4 seconds
THU NIGHT AND FRI
W winds 5 to 10 kt, becoming NE Seas 2 to 3 ft A chance of showers
FRI NIGHT
E winds 5 to 10 kt Seas 2 to 3 ft A chance of showers
Reporting time 10:05 AM EDT Mon Aug 17 2026

Ocean Waters from Montauk NY to Marthas Vineyard from 25 to 60 NM

THIS AFTERNOON
S winds 15 to 20 kt with gusts up to 25 kt Seas around 5 ft Wave Detail: SW 5 ft at 6 seconds and E 1 foot at 3 seconds Patchy fog Showers likely A chance of showers with isolated tstms Vsby 1 to 3 NM
TONIGHT
SW winds 5 to 10 kt with gusts up to 20 kt, becoming NW after midnight Seas 4 to 5 ft Wave Detail: S 5 ft at 7 seconds and SE 5 ft at 12 seconds Patchy fog Vsby 1 NM or less
TUE
NW winds 5 to 10 kt Seas 3 to 4 ft Wave Detail: S 4 ft at 7 seconds and SE 3 ft at 11 seconds Patchy fog in the morning with vsby 1 to 3 NM
TUE NIGHT
W winds around 5 kt Seas 2 to 3 ft Wave Detail: S 3 ft at 7 seconds and SE 2 ft at 8 seconds
WED AND WED NIGHT
SW winds 5 to 10 kt Seas 2 to 3 ft Wave Detail: SW 2 ft at 4 seconds and S 2 ft at 7 seconds
THU
W winds 5 to 10 kt Seas 2 to 3 ft Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 9 seconds
THU NIGHT AND FRI
W winds 5 to 10 kt, becoming NE Seas 2 to 3 ft A chance of showers
FRI NIGHT
E winds around 10 kt Seas 2 to 3 ft A chance of showers
Reporting time 10:05 AM EDT Mon Aug 17 2026

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