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Westport Harbor, MA Surf Forecast

FZUS51 KBOX 180911
SRFBOX

Surf Zone Forecast
National Weather Service Boston/Norton MA
411 AM EST Thu Dec 18 2025

MAZ022-182300-
Barnstable MA-
Including the beaches of Chatham, Eastham, and Provincetown
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...
East Coast...............Low.
Surf Height...
East Coast...............2 to 5 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...
East Coast...............In the mid 40s.
Weather.....................Sunny.
High Temperature............Around 50.
Winds.......................South winds 5 to 10 mph.
Tides...
Nauset Beach.............High 4.3 feet (MLLW) 09:06 AM EST.
Low 0.2 feet (MLLW) 03:37 PM EST.
Hyannisport..............High 3.6 feet (MLLW) 10:44 AM EST.
Low 0.2 feet (MLLW) 04:46 PM EST.
Barnstable Harbor........High 9.7 feet (MLLW) 10:04 AM EST.
Low 0.5 feet (MLLW) 04:50 PM EST.

.FRIDAY...
Rip Current Risk*...
East Coast...............Moderate.
Surf Height...
East Coast...............10 to 14 feet.
Thunderstorm Potential**....None.
Weather.....................Cloudy. Rain.
High Temperature............In the mid 50s.
Winds.......................Windy. South winds around 30 mph.
Tides...
Nauset Beach.............High 4.3 feet (MLLW) 09:45 AM EST.
Low 0.2 feet (MLLW) 04:16 PM EST.
Hyannisport..............High 3.6 feet (MLLW) 11:25 AM EST.
Low 0.2 feet (MLLW) 05:28 PM EST.
Barnstable Harbor........High 9.8 feet (MLLW) 10:43 AM EST.
Low 0.4 feet (MLLW) 05:29 PM EST.

.SATURDAY...Surf height 8 to 12 feet. Mostly sunny. Colder. Highs in
the lower 40s. West winds around 15 mph.
.SUNDAY...Surf height 6 to 9 feet. Partly sunny. A slight chance of
rain. Highs in the upper 40s. Southwest winds around 20 mph.
.MONDAY...Surf height 6 to 10 feet. Mostly sunny. Colder. Highs in
the lower 30s. Northwest winds around 20 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box

$$

MAZ024-182300-
Nantucket MA-
Including the beaches of Nantucket
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...
East Coast...............Moderate.
South Coast..............Moderate.
Surf Height...
East Coast...............3 to 5 feet.
South Coast..............4 to 5 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...
East Coast...............In the mid 40s.
South Coast..............In the mid 40s.
Weather.....................Sunny.
High Temperature............In the upper 40s.
Winds.......................Southwest winds around 5 mph,
increasing to southeast around 15 mph
in the afternoon.
Tides...
Nantucket................High 3.4 feet (MLLW) 10:45 AM EST.
Low 0.2 feet (MLLW) 05:09 PM EST.
Great Point..............High 3.1 feet (MLLW) 10:36 AM EST.
Low 0.2 feet (MLLW) 04:48 PM EST.

.FRIDAY...
Rip Current Risk*...
East Coast...............Moderate.
South Coast..............Moderate.
Surf Height...
East Coast...............7 to 10 feet, building
to 13 to 16 feet in the
afternoon.
South Coast..............9 to 12 feet, building to 14 to 17 feet
in the afternoon.
Thunderstorm Potential**....None.
Weather.....................Cloudy. Rain.
High Temperature............In the lower 50s.
Winds.......................Windy. South winds 30 to 35 mph.
Tides...
Nantucket................High 3.5 feet (MLLW) 11:26 AM EST.
Low 0.1 feet (MLLW) 05:47 PM EST.
Great Point..............High 3.1 feet (MLLW) 11:15 AM EST.
Low 0.1 feet (MLLW) 05:27 PM EST.

.SATURDAY...Surf height 9 to 14 feet. Mostly sunny. Colder. Highs in
the lower 40s. West winds around 20 mph.
.SUNDAY...Surf height 8 to 10 feet. Partly sunny. Highs in the upper
40s. Breezy. West winds around 25 mph.
.MONDAY...Surf height 9 to 12 feet. Sunny, colder. Highs in the lower
30s. Breezy. Northwest winds around 25 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box

$$

MAZ023-182300-
Dukes MA-
Including the beaches of Edgartown and Aquinnah
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...........Low.
Surf Height.................3 to 5 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...........In the upper 40s.
Weather.....................Sunny.
High Temperature............Around 50.
Winds.......................Southwest winds around 5 mph,
increasing to south around 15 mph in
the afternoon.
Tides...
Squibnocket Point........Low 0.1 feet (MLLW) 12:19 PM EST.

.FRIDAY...
Rip Current Risk*...........Moderate.
Surf Height.................12 to 17 feet.
Thunderstorm Potential**....Low.
Weather.....................Cloudy. Rain and a slight chance of
thunderstorms.
High Temperature............In the mid 50s.
Winds.......................Windy. South winds around 35 mph.
Tides...
Squibnocket Point........High 2.9 feet (MLLW) 06:20 AM EST.
Low 0.1 feet (MLLW) 01:00 PM EST.

.SATURDAY...Surf height 10 to 14 feet. Mostly sunny. Colder. Highs in
the mid 40s. West winds around 20 mph.
.SUNDAY...Surf height 9 to 11 feet. Mostly sunny. A slight chance of
rain. Highs in the upper 40s. Breezy. West winds around 25 mph.
.MONDAY...Surf height 9 to 12 feet. Sunny. A chance of light freezing
spray. Colder. Highs in the lower 30s. Northwest winds around 20 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box

$$

MAZ020-182300-
Southern Bristol MA-
Including the beaches of Westport, Dartmouth, and New Bedford
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...........Low.
Surf Height.................Around 4 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...........In the upper 40s.
Weather.....................Sunny.
High Temperature............Around 50.
Winds.......................South winds 5 to 10 mph.
Tides...
Westport Harbor..........High 3.0 feet (MLLW) 06:38 AM EST.
Low 0.1 feet (MLLW) 12:54 PM EST.

.FRIDAY...
Rip Current Risk*...........Moderate.
Surf Height.................12 to 16 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly cloudy. Rain.
High Temperature............In the mid 50s.
Winds.......................Windy. South winds around 30 mph.
Tides...
Westport Harbor..........High 3.0 feet (MLLW) 07:14 AM EST.
Low 0.1 feet (MLLW) 01:35 PM EST.

.SATURDAY...Surf height 9 to 13 feet. Mostly sunny. Colder. Highs in
the lower 40s. West winds around 15 mph.
.SUNDAY...Surf height 8 to 11 feet. Mostly sunny. A slight chance of
rain. Highs in the upper 40s. West winds around 20 mph.
.MONDAY...Surf height 7 to 10 feet. Sunny, colder. Highs in the lower
30s. Northwest winds around 15 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box

$$

RIZ007-182300-
Newport RI-
Including the beaches of Newport, Middletown, and Little Compton
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...........Low.
Surf Height.................3 to 4 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...........In the upper 40s.
Weather.....................Sunny.
High Temperature............In the lower 50s.
Winds.......................South winds 5 to 10 mph.
Tides...
Newport..................High 3.5 feet (MLLW) 06:29 AM EST.
Low 0.2 feet (MLLW) 12:21 PM EST.

.FRIDAY...
Rip Current Risk*...........High.
Surf Height.................12 to 16 feet.
Thunderstorm Potential**....Low.
Weather.....................Mostly cloudy. Rain and a slight chance
of thunderstorms.
High Temperature............In the mid 50s.
Winds.......................Windy. South winds around 30 mph.
Tides...
Newport..................High 3.5 feet (MLLW) 07:05 AM EST.
Low 0.1 feet (MLLW) 01:02 PM EST.

.SATURDAY...Surf height 8 to 12 feet. Mostly sunny. Colder. Highs in
the mid 40s. West winds around 15 mph.
.SUNDAY...Surf height 8 to 10 feet. Mostly sunny. A slight chance of
rain. Highs in the upper 40s. West winds around 20 mph.
.MONDAY...Surf height 6 to 9 feet. Sunny, colder. Highs in the lower
30s. Northwest winds around 15 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box

$$

RIZ006-182300-
Washington RI-
Including the beaches of Narragansett, Charlestown, and Westerly
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...........Low.
Surf Height.................3 to 4 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...........In the upper 40s.
Weather.....................Sunny.
High Temperature............In the lower 50s.
Winds.......................South winds 5 to 10 mph.
Tides...
Watch Hill Point.........High 2.6 feet (MLLW) 07:10 AM EST.
Low 0.1 feet (MLLW) 01:37 PM EST.
Point Judith (Harbor)....High 3.2 feet (MLLW) 06:35 AM EST.
Low -0.1 feet (MLLW) 01:04 PM EST.
Narragansett Pier........High 3.2 feet (MLLW) 06:18 AM EST.
Low 0.1 feet (MLLW) 12:32 PM EST.

.FRIDAY...
Rip Current Risk*...........High.
Surf Height.................12 to 16 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly cloudy. Rain.
High Temperature............In the mid 50s.
Winds.......................Breezy. South winds around 25 mph.
Tides...
Watch Hill Point.........High 2.6 feet (MLLW) 07:46 AM EST.
Low 0.1 feet (MLLW) 02:18 PM EST.
Point Judith (Harbor)....High 3.2 feet (MLLW) 07:11 AM EST.
Low -0.2 feet (MLLW) 01:42 PM EST.
Narragansett Pier........High 3.2 feet (MLLW) 06:54 AM EST.
Low 0.1 feet (MLLW) 01:13 PM EST.

.SATURDAY...Surf height 8 to 12 feet. Mostly sunny. Colder. Highs in
the lower 40s. West winds around 10 mph.
.SUNDAY...Surf height 7 to 10 feet. Mostly sunny. Highs in the upper
40s. West winds around 15 mph.
.MONDAY...Surf height 6 to 9 feet. Sunny, colder. Highs in the lower
30s. Northwest winds around 15 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box

$$

RIZ008-182300-
Block Island RI-
Including the beaches of Block Island
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...........Low.
Surf Height.................3 to 4 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...........Around 50.
Weather.....................Sunny.
High Temperature............In the lower 50s.
Winds.......................South winds around 5 mph, increasing to
around 15 mph in the afternoon.
Tides...
Block Island (Old Harbor)High 3.0 feet (MLLW) 06:17 AM EST.
Low 0.1 feet (MLLW) 12:43 PM EST.

.FRIDAY...
Rip Current Risk*...........Moderate.
Surf Height.................12 to 16 feet.
Thunderstorm Potential**....Low.
Weather.....................Mostly cloudy. Rain and a slight chance
of thunderstorms.
High Temperature............In the mid 50s.
Winds.......................Windy. South winds around 35 mph.
Tides...
Block Island (Old Harbor)High 3.0 feet (MLLW) 06:53 AM EST.
Low 0.0 feet (MLLW) 01:21 PM EST.

.SATURDAY...Surf height 8 to 12 feet. Mostly sunny. Cooler. Highs in
the mid 40s. West winds around 20 mph.
.SUNDAY...Surf height 7 to 10 feet. Mostly sunny. Highs in the upper
40s. Breezy. West winds around 25 mph.
.MONDAY...Surf height 7 to 10 feet. Sunny, colder. Highs in the mid
30s. Northwest winds around 20 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box

$$

MAZ019-182300-
Eastern Plymouth MA-
Including the beaches of Cohasset, Duxbury, Hingham, Kingston,
Marshfield, Plymouth, and Scituate
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...........Low.
Surf Height.................2 to 3 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...........In the mid 40s.
Weather.....................Sunny.
High Temperature............Around 50.
Winds.......................South winds 5 to 10 mph.
Tides...
Scituate Harbor..........High 9.1 feet (MLLW) 09:58 AM EST.
Low 0.7 feet (MLLW) 04:19 PM EST.
Plymouth.................High 9.7 feet (MLLW) 10:00 AM EST.
Low 0.8 feet (MLLW) 04:32 PM EST.

.FRIDAY...
Rip Current Risk*...........Moderate.
Surf Height.................8 to 11 feet.
Thunderstorm Potential**....None.
Weather.....................Cloudy. Rain.
High Temperature............In the upper 50s.
Winds.......................Windy. South winds 25 to 30 mph.
Tides...
Scituate Harbor..........High 9.2 feet (MLLW) 10:36 AM EST.
Low 0.6 feet (MLLW) 04:59 PM EST.
Plymouth.................High 9.8 feet (MLLW) 10:40 AM EST.
Low 0.7 feet (MLLW) 05:14 PM EST.

.SATURDAY...Surf height 7 to 11 feet. Mostly sunny. Colder. Highs in
the lower 40s. West winds around 15 mph.
.SUNDAY...Surf height 4 to 6 feet. Partly sunny. A slight chance of
rain. Highs in the upper 40s. West winds around 15 mph.
.MONDAY...Surf height 5 to 8 feet. Sunny. A chance of light freezing
spray. Colder. Highs in the lower 30s. Northwest winds around 20 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box

$$

MAZ015-016-182300-
Suffolk MA-Eastern Norfolk MA-
Including the beaches of Boston, Chelsea, Revere, Winthrop,
Braintree, Milton, Quincy, and Weymouth
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...........Low.
Surf Height.................2 to 3 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...........In the mid 40s.
Weather.....................Sunny.
High Temperature............Around 50.
Winds.......................South winds 5 to 10 mph.
Tides...
Boston...................High 9.7 feet (MLLW) 09:53 AM EST.
Low 0.5 feet (MLLW) 04:20 PM EST.

.FRIDAY...
Rip Current Risk*...........Moderate.
Surf Height.................7 to 10 feet.
Thunderstorm Potential**....None.
Weather.....................Cloudy. Rain.
High Temperature............In the upper 50s.
Winds.......................Breezy. South winds around 25 mph.
Tides...
Boston...................High 9.8 feet (MLLW) 10:32 AM EST.
Low 0.4 feet (MLLW) 04:59 PM EST.

.SATURDAY...Surf height 7 to 10 feet. Mostly sunny. Colder. Highs in
the lower 40s. West winds around 15 mph.
.SUNDAY...Surf height 4 to 7 feet. Partly sunny. A slight chance of
rain. Highs in the mid 40s. West winds around 15 mph.
.MONDAY...Surf height 5 to 8 feet. Sunny, colder. Highs in the lower
30s. Northwest winds around 15 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box

$$

MAZ007-182300-
Eastern Essex MA-
Including the beaches of Beverly, Gloucester, and Newburyport
411 AM EST Thu Dec 18 2025

.TODAY...
Rip Current Risk*...........Low.
Surf Height.................2 to 4 feet.
Thunderstorm Potential**....None.
UV Index**..................Low.
Water Temperature...........In the mid 40s.
Weather.....................Sunny.
High Temperature............In the upper 40s.
Winds.......................South winds 5 to 10 mph.
Tides...
Newburyport..............High 8.2 feet (MLLW) 10:10 AM EST.
Low 0.3 feet (MLLW) 04:53 PM EST.
Gloucester Harbor........High 8.9 feet (MLLW) 09:56 AM EST.
Low 0.5 feet (MLLW) 04:19 PM EST.

.FRIDAY...
Rip Current Risk*...........High.
Surf Height.................9 to 13 feet.
Thunderstorm Potential**....None.
Weather.....................Cloudy. Rain.
High Temperature............In the mid 50s.
Winds.......................Breezy. South winds around 25 mph.
Tides...
Newburyport..............High 8.3 feet (MLLW) 10:51 AM EST.
Low 0.2 feet (MLLW) 05:36 PM EST.
Gloucester Harbor........High 8.9 feet (MLLW) 10:34 AM EST.
Low 0.4 feet (MLLW) 04:57 PM EST.

.SATURDAY...Surf height 8 to 11 feet. Mostly sunny. Colder. Highs
around 40. West winds around 15 mph.
.SUNDAY...Surf height 5 to 8 feet. Partly sunny. A slight chance of
rain. Highs in the mid 40s. West winds around 15 mph.
.MONDAY...Surf height 5 to 9 feet. Sunny, colder. Highs around 30.
Northwest winds around 15 mph.

&&

Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.

** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box


$$



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