Cape Ann's Marina, MA
09/21/2026 04:00 AM
58°F
TEMPERATURE
Winds 10 mph N
Patchy Fog
Patchy fog and a slight chance of rain showers. Cloudy, with a low around 56. North wind around 12 mph. Chance of precipitation is 20%.
Moonrise
05:24 PM
Moonset
01:46 AM
Sunrise
06:28 AM
Moon Phase
Waxing gibbous
Sunset
06:43 PM

Hourly Forecast

Mon, 04:00 AM

Patchy Fog
Winds: 10 mph N
58°

Mon, 05:00 AM

Patchy Fog
Winds: 12 mph N
58°

Mon, 06:00 AM

Cloudy
Winds: 13 mph N
57°

Mon, 07:00 AM

Cloudy
Winds: 12 mph N
57°

Mon, 08:00 AM

Mostly Cloudy
Winds: 12 mph N
59°

Mon, 09:00 AM

Mostly Cloudy
Winds: 13 mph N
61°

Mon, 10:00 AM

Partly Sunny
Winds: 14 mph N
62°

Mon, 11:00 AM

Partly Sunny
Winds: 14 mph N
63°

Mon, 12:00 PM

Partly Sunny
Winds: 14 mph N
64°

Mon, 01:00 PM

Partly Sunny
Winds: 13 mph N
64°

Mon, 02:00 PM

Mostly Sunny
Winds: 12 mph NE
64°

Mon, 03:00 PM

Mostly Sunny
Winds: 9 mph NE
64°

Mon, 04:00 PM

Mostly Sunny
Winds: 8 mph NE
64°

Mon, 05:00 PM

Mostly Sunny
Winds: 7 mph NE
62°

Mon, 06:00 PM

Partly Cloudy
Winds: 6 mph NE
61°

Mon, 07:00 PM

Partly Cloudy
Winds: 5 mph NE
60°

Mon, 08:00 PM

Mostly Cloudy
Winds: 5 mph NE
59°

Mon, 09:00 PM

Mostly Cloudy
Winds: 5 mph NE
57°

Mon, 10:00 PM

Mostly Cloudy
Winds: 5 mph NE
57°

Mon, 11:00 PM

Mostly Cloudy
Winds: 7 mph NE
56°

Tue, 12:00 AM

Cloudy
Winds: 8 mph NE
56°

Tue, 01:00 AM

Cloudy
Winds: 10 mph NE
55°

Tue, 02:00 AM

Cloudy
Winds: 13 mph NE
55°

Tue, 03:00 AM

Mostly Cloudy
Winds: 13 mph NE
55°

Overnight

Patchy Fog
56°
Winds: 12 mph N
Patchy fog and a slight chance of rain showers. Cloudy, with a low around 56. North wind around 12 mph. Chance of precipitation is 20%.

Monday

Partly Sunny
66°
Winds: 7 to 14 mph NE
Partly sunny, with a high near 66. Northeast wind 7 to 14 mph.

Monday Night

Mostly Cloudy
50°
Winds: 5 to 14 mph NE
Mostly cloudy, with a low around 50. Northeast wind 5 to 14 mph.

Tuesday

Partly Sunny
65°
Winds: 12 to 15 mph NE
Partly sunny, with a high near 65. Northeast wind 12 to 15 mph.

Tuesday Night

Partly Cloudy
49°
Winds: 10 to 17 mph NE
Partly cloudy, with a low around 49. Northeast wind 10 to 17 mph.

Wednesday

Mostly Sunny
65°
Winds: 17 to 23 mph NE
Mostly sunny, with a high near 65. Northeast wind 17 to 23 mph.

Wednesday Night

Partly Cloudy
53°
Winds: 16 to 20 mph NE
Partly cloudy, with a low around 53. Northeast wind 16 to 20 mph.

Thursday

Partly Sunny
64°
Winds: 14 to 20 mph NE
Partly sunny, with a high near 64. Northeast wind 14 to 20 mph.

Thursday Night

Mostly Cloudy then Slight Chance Rain Showers
52°
Winds: 10 to 17 mph NE
A slight chance of rain showers after 2am. Mostly cloudy, with a low around 52. Northeast wind 10 to 17 mph.

Friday

Chance Rain Showers
66°
Winds: 18 to 25 mph NE
A chance of rain showers. Mostly cloudy, with a high near 66. Northeast wind 18 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.

Friday Night

Rain Showers Likely
52°
Winds: 23 mph NE
Rain showers likely. Mostly cloudy, with a low around 52. Northeast wind around 23 mph, with gusts as high as 38 mph. Chance of precipitation is 60%.

Saturday

Rain Showers Likely
64°
Winds: 23 to 28 mph NE
Rain showers likely. Mostly cloudy, with a high near 64. Northeast wind 23 to 28 mph, with gusts as high as 45 mph. Chance of precipitation is 60%.

Saturday Night

Chance Rain Showers
52°
Winds: 17 to 21 mph NE
A chance of rain showers. Mostly cloudy, with a low around 52. Northeast wind 17 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 50%.

Sunday

Chance Rain Showers
65°
Winds: 16 to 22 mph NE
A chance of rain showers. Partly sunny, with a high near 65. Northeast wind 16 to 22 mph, with gusts as high as 35 mph.

Coastal Waters Forecast for Massachusetts and Rhode Island

National Weather Service Boston/Norton MA

for Massachusetts and Rhode Island coastal waters. High pres builds in from the N early this week with a distant system off shore, which could provide a period of strong E to NE wind near gale force, Tue into Wed. There is potential for a coastal low to track northward late week bringing strong winds and rough seas which will continue to be monitored.

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

TODAY
NE winds 15 to 20 kt with gusts up to 25 kt Seas 2 to 4 ft Wave Detail: NE 4 ft at 5 seconds and S 1 foot at 4 seconds Patchy fog this morning A slight chance of showers this morning
TONIGHT
NE winds 10 to 15 kt, increasing to 15 to 20 kt with gusts up to 25 kt after midnight Seas 2 to 4 ft Wave Detail: NE 4 ft at 5 seconds and SE 2 ft at 9 seconds
TUE
NE winds 15 to 20 kt with gusts up to 25 kt Seas 4 to 5 ft Wave Detail: N 5 ft at 5 seconds and SE 2 ft at 12 seconds
TUE NIGHT
NE winds 15 to 20 kt with gusts up to 30 kt Seas 4 to 6 ft Wave Detail: E 5 ft at 7 seconds and SE 2 ft at 10 seconds
WED
NE winds 20 to 25 kt with gusts up to 30 kt Seas 5 to 8 ft Wave Detail: E 8 ft at 9 seconds and N 1 foot at 4 seconds
WED NIGHT
NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight Gusts up to 30 kt Seas 7 to 9 ft Wave Detail: E 8 ft at 9 seconds
THU AND THU NIGHT
NE winds 20 to 25 kt with gusts up to 35 kt Seas 7 to 10 ft
FRI
NE winds 25 to 30 kt with gusts up to 45 kt Seas 9 to 12 ft A chance of showers
FRI NIGHT
NE winds 25 to 35 kt with gusts up to 45 kt Seas 10 to 13 ft Showers likely
Reporting time 04:03 AM EDT Mon Sep 21 2026

Massachusetts Bay and Ipswich Bay

TODAY
NE winds 15 to 20 kt with gusts up to 25 kt Seas 2 to 3 ft Wave Detail: NE 3 ft at 4 seconds and NW 2 ft at 9 seconds Patchy fog this morning
TONIGHT
NE winds 5 to 10 kt, increasing to 15 to 20 kt with gusts up to 25 kt after midnight Seas 2 to 3 ft Wave Detail: NE 3 ft at 5 seconds and E 1 foot at 9 seconds
TUE
NE winds 15 to 20 kt with gusts up to 25 kt Seas 3 to 4 ft Wave Detail: NE 4 ft at 7 seconds and N 1 foot at 4 seconds
TUE NIGHT
NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight Gusts up to 30 kt Seas 3 to 4 ft Wave Detail: NE 4 ft at 6 seconds and SE 1 foot at 14 seconds
WED
NE winds 20 to 25 kt with gusts up to 30 kt Seas 4 to 6 ft Wave Detail: E 6 ft at 9 seconds and N 1 foot at 4 seconds
WED NIGHT
NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight Seas 5 to 7 ft Wave Detail: E 7 ft at 8 seconds
THU AND THU NIGHT
NE winds 20 to 25 kt, increasing to 25 to 30 kt Seas 5 to 8 ft
FRI
NE winds 25 to 30 kt with gusts up to 45 kt Seas 6 to 9 ft A chance of showers
FRI NIGHT
NE winds 25 to 35 kt with gusts up to 45 kt Seas 8 to 11 ft Showers likely
Reporting time 04:03 AM EDT Mon Sep 21 2026

Cape Cod Bay

SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

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

SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH LATE TONIGHT
Reporting time 04:03 AM EDT Mon Sep 21 2026

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

SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH LATE TONIGHT
GALE WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH THURSDAY AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

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

SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH LATE TONIGHT
GALE WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH THURSDAY AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

Nantucket Sound

SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

Vineyard Sound

SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

Buzzards Bay

SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

Rhode Island Sound

SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON
GALE WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH THURSDAY AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

Block Island Sound

SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS AFTERNOON
GALE WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH THURSDAY AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

Boston Harbor

TODAY
NE winds 10 to 15 kt with gusts up to 20 kt Waves 2 to 3 ft
TONIGHT
NE winds 5 to 10 kt, increasing to 15 to 20 kt after midnight Waves 1 foot or less, then 2 to 3 ft after midnight
TUE
NE winds 15 to 20 kt with gusts up to 25 kt Waves 2 to 3 ft
TUE NIGHT
NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight Gusts up to 25 kt Waves 2 to 3 ft
WED AND WED NIGHT
NE winds 15 to 20 kt with gusts up to 30 kt Waves 2 to 3 ft
THU AND THU NIGHT
NE winds 20 to 25 kt with gusts up to 30 kt Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance
FRI
NE winds 25 to 30 kt with gusts up to 40 kt Waves 2 to 3 ft, except 4 to 6 ft at the outer harbor entrance A chance of showers
FRI NIGHT
NE winds 25 to 30 kt with gusts up to 40 kt Waves 2 to 3 ft, except 5 to 7 ft at the outer harbor entrance Showers likely
Reporting time 04:03 AM EDT Mon Sep 21 2026

Narragansett Bay

TODAY
NE winds 15 to 20 kt with gusts up to 25 kt Waves 2 to 3 ft Patchy fog this morning A slight chance of showers this morning
TONIGHT
NE winds 10 to 15 kt with gusts up to 20 kt Waves around 2 ft
TUE
NE winds 15 to 20 kt with gusts up to 25 kt Waves 2 to 3 ft
TUE NIGHT
NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight Gusts up to 25 kt Waves 2 to 3 ft
WED AND WED NIGHT
NE winds 15 to 20 kt with gusts up to 30 kt Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance
THU
NE winds 20 to 25 kt with gusts up to 30 kt Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance
THU NIGHT AND FRI
NE winds 20 to 25 kt with gusts up to 30 kt, becoming N 25 to 30 kt with gusts up to 40 kt Waves 2 to 3 ft, except 4 to 6 ft at the bay entrance A chance of showers
FRI NIGHT
N winds 25 to 30 kt with gusts up to 40 kt Waves around 3 ft, except 4 to 6 ft at the bay entrance Showers likely
Reporting time 04:03 AM EDT Mon Sep 21 2026

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

TODAY
N winds 15 to 20 kt with gusts up to 25 kt Seas 2 to 4 ft Wave Detail: NE 4 ft at 5 seconds and W 2 ft at 5 seconds Patchy fog this morning A slight chance of showers this morning
TONIGHT
NE winds 10 to 15 kt, increasing to 15 to 20 kt after midnight Gusts up to 25 kt Seas 3 to 5 ft Wave Detail: NE 4 ft at 6 seconds and SE 2 ft at 9 seconds
TUE
NE winds 15 to 20 kt with gusts up to 25 kt Seas 4 to 5 ft Wave Detail: E 5 ft at 7 seconds and N 1 foot at 4 seconds
TUE NIGHT
NE winds 15 to 20 kt with gusts up to 25 kt Seas 4 to 6 ft Wave Detail: E 6 ft at 7 seconds and SE 2 ft at 11 seconds
WED AND WED NIGHT
NE winds 20 to 25 kt with gusts up to 30 kt Seas 6 to 9 ft Wave Detail: E 8 ft at 8 seconds and E 8 ft at 11 seconds
THU AND THU NIGHT
NE winds 20 to 25 kt with gusts up to 35 kt Seas 8 to 11 ft Wave Detail: E 11 ft at 12 seconds and N 5 ft at 5 seconds
FRI
NE winds 25 to 35 kt with gusts up to 40 kt Seas 9 to 13 ft A chance of showers
FRI NIGHT
NE winds 30 to 35 kt with gusts up to 45 kt Seas 11 to 14 ft Showers likely
Reporting time 04:03 AM EDT Mon Sep 21 2026

Ocean Waters from Provincetown to Nantucket from 20 to 60 NM

TODAY
NE winds 15 to 20 kt with gusts up to 25 kt Seas 2 to 4 ft, building to 4 to 5 ft this afternoon Wave Detail: E 3 ft at 7 seconds and SW 1 foot at 4 seconds, becoming NE 4 ft at 5 seconds and NW 3 ft at 5 seconds Patchy fog A chance of showers, mainly this morning with vsby 1 NM or less
TONIGHT
NE winds 15 to 20 kt with gusts up to 25 kt Seas 4 to 6 ft Wave Detail: NE 6 ft at 6 seconds and SE 2 ft at 9 seconds
TUE
NE winds around 20 kt with gusts up to 25 kt Seas 5 to 6 ft Wave Detail: NE 6 ft at 7 seconds and SE 2 ft at 13 seconds
TUE NIGHT
NE winds 15 to 20 kt, increasing to 20 to 25 kt after midnight Gusts up to 30 kt Seas 5 to 8 ft Wave Detail: E 8 ft at 8 seconds and E 4 ft at 14 seconds
WED AND WED NIGHT
NE winds 25 to 30 kt with gusts up to 35 kt Seas 8 to 11 ft Wave Detail: E 11 ft at 9 seconds
THU
NE winds 25 to 30 kt with gusts up to 35 kt Seas 10 to 13 ft Wave Detail: E 13 ft at 11 seconds and NE 9 ft at 7 seconds
THU NIGHT
NE winds 25 to 30 kt with gusts up to 40 kt Seas 11 to 14 ft A chance of showers
FRI
NE winds 30 to 40 kt with gusts up to 45 kt Seas 12 to 16 ft Showers likely
FRI NIGHT
NE winds 30 to 35 kt with gusts up to 45 kt Seas 13 to 17 ft Showers likely
Reporting time 04:03 AM EDT Mon Sep 21 2026

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

GALE WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH THURSDAY AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

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

GALE WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH THURSDAY AFTERNOON
Reporting time 04:03 AM EDT Mon Sep 21 2026

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