Surf Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
483
FZUS51 KBOX 180813
SRFBOX
Surf Zone Forecast
National Weather Service Boston/Norton MA
412 AM EDT Mon Aug 18 2025
MAZ022-182000-
Barnstable MA-
Including the beaches of Chatham, Eastham, and Provincetown
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...
East Coast...............Moderate.
Surf Height...
East Coast...............4 to 7 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...
East Coast...............In the lower 70s.
Weather.....................Mostly cloudy until 8 AM, then mostly
sunny.
High Temperature............In the lower 70s.
Winds.......................Northeast winds 15 to 20 mph.
Tides...
Nauset Beach.............High 3.9 feet (MLLW) 06:33 AM EDT.
Low 0.5 feet (MLLW) 12:35 PM EDT.
Hyannisport..............High 3.0 feet (MLLW) 08:29 AM EDT.
Low 0.6 feet (MLLW) 01:40 PM EDT.
Barnstable Harbor........High 8.8 feet (MLLW) 07:31 AM EDT.
Low 1.2 feet (MLLW) 01:48 PM EDT.
.TUESDAY...
Rip Current Risk*...
East Coast...............Moderate.
Surf Height...
East Coast...............4 to 5 feet.
Thunderstorm Potential**....None.
Weather.....................Sunny.
High Temperature............In the lower 70s.
Winds.......................East winds around 10 mph.
Tides...
Nauset Beach.............High 3.8 feet (MLLW) 07:41 AM EDT.
Low 0.6 feet (MLLW) 01:39 PM EDT.
Hyannisport..............High 3.0 feet (MLLW) 09:33 AM EDT.
Low 0.7 feet (MLLW) 02:40 PM EDT.
Barnstable Harbor........High 8.7 feet (MLLW) 08:39 AM EDT.
Low 1.3 feet (MLLW) 02:52 PM EDT.
.WEDNESDAY...Surf height 4 to 7 feet. Mostly sunny. Highs in the
lower 70s. Southeast winds around 10 mph.
.THURSDAY...Surf height 11 to 14 feet. Mostly sunny. A slight chance
of showers. Highs in the lower 70s. Northeast winds around 15 mph.
.FRIDAY...Surf height 8 to 12 feet. Sunny. Highs in the lower 70s.
North 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
$$
MAZ024-182000-
Nantucket MA-
Including the beaches of Nantucket
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...
East Coast...............Moderate.
South Coast..............Moderate.
Surf Height...
East Coast...............3 to 7 feet.
South Coast..............3 to 7 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...
East Coast...............Around 70.
South Coast..............In the lower 70s.
Weather.....................Mostly cloudy until 10 AM, then mostly
sunny.
High Temperature............Around 70.
Winds.......................Breezy. Northeast winds 20 to 25 mph.
Tides...
Nantucket................High 2.8 feet (MLLW) 08:35 AM EDT.
Low 0.5 feet (MLLW) 01:55 PM EDT.
Great Point..............High 2.8 feet (MLLW) 08:03 AM EDT.
Low 0.4 feet (MLLW) 01:46 PM EDT.
.TUESDAY...
Rip Current Risk*...
East Coast...............High.
South Coast..............High.
Surf Height...
East Coast...............Around 5 feet.
South Coast..............4 to 7 feet.
Thunderstorm Potential**....None.
Weather.....................Sunny.
High Temperature............In the lower 70s.
Winds.......................East winds 10 to 15 mph.
Tides...
Nantucket................High 2.8 feet (MLLW) 09:40 AM EDT.
Low 0.5 feet (MLLW) 02:58 PM EDT.
Great Point..............High 2.8 feet (MLLW) 09:11 AM EDT.
Low 0.4 feet (MLLW) 02:50 PM EDT.
.WEDNESDAY...Surf height 6 to 9 feet. Mostly sunny. Highs in the
lower 70s. East winds around 10 mph.
.THURSDAY...Surf height 13 to 17 feet. Mostly sunny. A slight chance
of showers. Highs in the lower 70s. Northeast winds around 20 mph.
.FRIDAY...Surf height 8 to 12 feet. Mostly sunny. Highs in the lower
70s. Breezy. North 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
$$
MAZ023-182000-
Dukes MA-
Including the beaches of Edgartown and Aquinnah
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................3 to 6 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly cloudy until 10 AM, then mostly
sunny.
High Temperature............Around 70.
Winds.......................Northeast winds around 20 mph.
Tides...
Squibnocket Point........Low 0.4 feet (MLLW) 09:12 AM EDT.
High 3.3 feet (MLLW) 03:44 PM EDT.
.TUESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................4 to 7 feet.
Thunderstorm Potential**....None.
Weather.....................Sunny.
High Temperature............In the lower 70s.
Winds.......................East winds around 10 mph.
Tides...
Squibnocket Point........Low 0.4 feet (MLLW) 10:31 AM EDT.
High 3.3 feet (MLLW) 04:53 PM EDT.
.WEDNESDAY...Surf height 6 to 9 feet. Mostly sunny. Highs in the
lower 70s. East winds around 10 mph.
.THURSDAY...Surf height 13 to 17 feet. Mostly sunny. A slight chance
of showers. Highs in the lower 70s. Northeast winds around 20 mph.
.FRIDAY...Surf height 9 to 12 feet. Sunny. Highs in the lower 70s.
Breezy. Northeast 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
$$
MAZ020-182000-
Southern Bristol MA-
Including the beaches of Westport, Dartmouth, and New Bedford
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................3 to 5 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Partly sunny until 12 PM, then sunny.
High Temperature............In the lower 70s.
Winds.......................Northeast winds 15 to 20 mph.
Tides...
Westport Harbor..........Low 0.4 feet (MLLW) 09:47 AM EDT.
High 3.4 feet (MLLW) 04:38 PM EDT.
.TUESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................4 to 6 feet.
Thunderstorm Potential**....None.
Weather.....................Sunny.
High Temperature............In the mid 70s.
Winds.......................East winds around 10 mph.
Tides...
Westport Harbor..........Low 0.4 feet (MLLW) 11:06 AM EDT.
High 3.4 feet (MLLW) 05:47 PM EDT.
.WEDNESDAY...Surf height 6 to 8 feet. Mostly sunny. Highs in the
lower 70s. East winds around 10 mph.
.THURSDAY...Surf height 12 to 16 feet. Mostly sunny. A slight chance
of showers. Highs in the mid 70s. Northeast winds around 15 mph.
.FRIDAY...Surf height 9 to 12 feet. Sunny. Highs in the mid 70s.
Northeast winds around 20 mph.
&&
Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box
$$
RIZ007-182000-
Newport RI-
Including the beaches of Newport, Middletown, and Little Compton
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...........Low.
Surf Height.................3 to 6 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Partly sunny until 12 PM, then sunny.
High Temperature............In the lower 70s.
Winds.......................Northeast winds 15 to 20 mph.
Tides...
Newport..................Low 0.5 feet (MLLW) 09:14 AM EDT.
High 4.0 feet (MLLW) 04:29 PM EDT.
.TUESDAY...
Rip Current Risk*...........High.
Surf Height.................4 to 7 feet.
Thunderstorm Potential**....None.
Weather.....................Sunny.
High Temperature............In the lower 70s.
Winds.......................East winds around 10 mph.
Tides...
Newport..................Low 0.5 feet (MLLW) 10:33 AM EDT.
High 4.0 feet (MLLW) 05:38 PM EDT.
.WEDNESDAY...Surf height 6 to 9 feet. Mostly sunny. Highs in the
lower 70s. East winds around 10 mph.
.THURSDAY...Surf height 12 to 16 feet. Mostly sunny. A slight chance
of showers. Highs in the mid 70s. Northeast winds around 15 mph.
.FRIDAY...Surf height 9 to 12 feet. Sunny. Highs in the mid 70s.
Northeast 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
$$
RIZ006-182000-
Washington RI-
Including the beaches of Narragansett, Charlestown, and Westerly
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...........Low.
Surf Height.................3 to 6 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly cloudy until 10 AM, then mostly
sunny.
High Temperature............In the lower 70s.
Winds.......................Northeast winds around 15 mph.
Tides...
Watch Hill Point.........Low 0.4 feet (MLLW) 10:30 AM EDT.
High 2.9 feet (MLLW) 05:10 PM EDT.
Point Judith (Harbor)....Low 0.4 feet (MLLW) 09:50 AM EDT.
High 3.5 feet (MLLW) 04:41 PM EDT.
Narragansett Pier........Low 0.5 feet (MLLW) 09:25 AM EDT.
High 3.6 feet (MLLW) 04:18 PM EDT.
.TUESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................4 to 7 feet.
Thunderstorm Potential**....None.
Weather.....................Sunny.
High Temperature............In the lower 70s.
Winds.......................Northeast winds around 10 mph, becoming
southeast in the afternoon.
Tides...
Watch Hill Point.........Low 0.3 feet (MLLW) 11:49 AM EDT.
Point Judith (Harbor)....Low 0.4 feet (MLLW) 11:17 AM EDT.
High 3.5 feet (MLLW) 05:49 PM EDT.
Narragansett Pier........Low 0.4 feet (MLLW) 10:44 AM EDT.
High 3.7 feet (MLLW) 05:27 PM EDT.
.WEDNESDAY...Surf height 6 to 9 feet. Mostly sunny. Highs in the
lower 70s. East winds around 10 mph.
.THURSDAY...Surf height 12 to 16 feet. Mostly sunny. A slight chance
of showers. Highs in the mid 70s. Northeast winds around 10 mph.
.FRIDAY...Surf height 9 to 12 feet. Sunny. Highs in the mid 70s.
Northeast 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
$$
RIZ008-182000-
Block Island RI-
Including the beaches of Block Island
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................3 to 6 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly cloudy until 10 AM, then mostly
sunny.
High Temperature............In the lower 70s.
Winds.......................Breezy. Northeast winds around 25 mph,
diminishing to around 15 mph in the
afternoon.
Tides...
Block Island (Old Harbor)Low 0.4 feet (MLLW) 09:30 AM EDT.
High 3.3 feet (MLLW) 04:25 PM EDT.
.TUESDAY...
Rip Current Risk*...........High.
Surf Height.................5 to 7 feet.
Thunderstorm Potential**....None.
Weather.....................Sunny.
High Temperature............In the lower 70s.
Winds.......................East winds 10 to 15 mph.
Tides...
Block Island (Old Harbor)Low 0.3 feet (MLLW) 10:55 AM EDT.
High 3.4 feet (MLLW) 05:34 PM EDT.
.WEDNESDAY...Surf height 7 to 8 feet. Mostly sunny. Highs in the
lower 70s. East winds around 15 mph.
.THURSDAY...Surf height 13 to 16 feet. Mostly sunny. A slight chance
of showers. Highs in the mid 70s. Northeast winds around 20 mph.
.FRIDAY...Surf height 9 to 12 feet. Sunny. Highs in the lower 70s.
Breezy. Northeast 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
$$
MAZ019-182000-
Eastern Plymouth MA-
Including the beaches of Cohasset, Duxbury, Hingham, Kingston,
Marshfield, Plymouth, and Scituate
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................5 to 7 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the upper 60s.
Weather.....................Partly sunny until 10 AM, then sunny.
High Temperature............Around 70.
Winds.......................Northeast winds 15 to 20 mph.
Tides...
Scituate Harbor..........High 8.3 feet (MLLW) 07:28 AM EDT.
Low 1.0 feet (MLLW) 01:23 PM EDT.
Plymouth.................High 9.0 feet (MLLW) 07:31 AM EDT.
Low 1.2 feet (MLLW) 01:45 PM EDT.
.TUESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds around 10 mph.
Tides...
Scituate Harbor..........High 8.3 feet (MLLW) 08:36 AM EDT.
Low 1.0 feet (MLLW) 02:28 PM EDT.
Plymouth.................High 8.9 feet (MLLW) 08:38 AM EDT.
Low 1.2 feet (MLLW) 02:47 PM EDT.
.WEDNESDAY...Surf height 2 to 4 feet. Partly sunny. Highs in the
lower 70s. Southeast winds around 10 mph.
.THURSDAY...Surf height 3 to 7 feet. Mostly sunny. A slight chance of
showers. Highs in the lower 70s. Northeast winds around 15 mph.
.FRIDAY...Surf height 7 to 10 feet. Sunny. Highs in the lower 70s.
Northeast winds around 15 mph.
&&
Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box
$$
MAZ015-016-182000-
Suffolk MA-Eastern Norfolk MA-
Including the beaches of Boston, Chelsea, Revere, Winthrop,
Braintree, Milton, Quincy, and Weymouth
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................5 to 7 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the upper 60s.
Weather.....................Partly sunny until 10 AM, then sunny.
High Temperature............Around 70.
Winds.......................Northeast winds 15 to 20 mph.
Tides...
Boston...................High 8.8 feet (MLLW) 07:20 AM EDT.
Low 1.2 feet (MLLW) 01:18 PM EDT.
.TUESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds 5 to 10 mph.
Tides...
Boston...................High 8.7 feet (MLLW) 08:28 AM EDT.
Low 1.3 feet (MLLW) 02:22 PM EDT.
.WEDNESDAY...Surf height 2 to 4 feet. Partly sunny. Highs in the
lower 70s. Southeast winds around 10 mph.
.THURSDAY...Surf height 3 to 6 feet. Mostly sunny. A slight chance of
showers. Highs in the lower 70s. Northeast winds around 10 mph.
.FRIDAY...Surf height 6 to 9 feet. Sunny. Highs in the lower 70s.
Northeast 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
$$
MAZ007-182000-
Eastern Essex MA-
Including the beaches of Beverly, Gloucester, and Newburyport
412 AM EDT Mon Aug 18 2025
.TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................5 to 7 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the upper 60s.
Weather.....................Sunny.
High Temperature............Around 70.
Winds.......................Northeast winds 10 to 15 mph.
Tides...
Newburyport..............High 7.4 feet (MLLW) 07:41 AM EDT.
Low 0.8 feet (MLLW) 02:02 PM EDT.
Gloucester Harbor........High 8.2 feet (MLLW) 07:26 AM EDT.
Low 1.0 feet (MLLW) 01:20 PM EDT.
.TUESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds 5 to 10 mph.
Tides...
Newburyport..............High 7.3 feet (MLLW) 08:46 AM EDT.
Low 0.8 feet (MLLW) 03:05 PM EDT.
Gloucester Harbor........High 8.2 feet (MLLW) 08:34 AM EDT.
Low 1.0 feet (MLLW) 02:26 PM EDT.
.WEDNESDAY...Surf height 3 to 5 feet. Partly sunny. Highs in the
lower 70s. Southeast winds around 10 mph.
.THURSDAY...Surf height 4 to 8 feet. Mostly sunny. A slight chance of
showers. Highs in the lower 70s. East winds around 10 mph.
.FRIDAY...Surf height 6 to 10 feet. Sunny. Highs in the mid 70s.
Northeast winds around 15 mph.
&&
Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box
$$