Surf Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
998
FZUS51 KBOX 182012
SRFBOX
Surf Zone Forecast
National Weather Service Boston/Norton MA
411 PM EDT Mon Aug 18 2025
MAZ022-190800-
Barnstable MA-
Including the beaches of Chatham, Eastham, and Provincetown
411 PM EDT Mon Aug 18 2025
...HIGH SURF ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 8 PM EDT
THURSDAY...
.TUESDAY...
Rip Current Risk*...
East Coast...............Moderate.
Surf Height...
East Coast...............Around 4 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...
East Coast...............Around 70.
Weather.....................Mostly sunny.
High Temperature............In the lower 70s.
Winds.......................Northeast 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...
Rip Current Risk*...
East Coast...............High.
Surf Height...
East Coast...............4 to 7 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny. A slight chance of
showers.
High Temperature............In the lower 70s.
Winds.......................East winds 5 to 10 mph.
Tides...
Nauset Beach.............High 3.9 feet (MLLW) 08:47 AM EDT.
Low 0.5 feet (MLLW) 02:42 PM EDT.
Hyannisport..............High 3.1 feet (MLLW) 10:35 AM EDT.
Low 0.6 feet (MLLW) 03:40 PM EDT.
Barnstable Harbor........High 8.9 feet (MLLW) 09:45 AM EDT.
Low 1.2 feet (MLLW) 03:55 PM EDT.
.THURSDAY...Surf height 9 to 13 feet. Mostly sunny. Highs around 70.
Northeast winds around 15 mph.
.FRIDAY...Surf height 12 to 15 feet. Mostly sunny. Highs in the lower
70s. Northeast winds around 20 mph.
.SATURDAY...Surf height 7 to 9 feet. Sunny. Highs in the mid 70s.
Southwest 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
$$
MAZ024-190800-
Nantucket MA-
Including the beaches of Nantucket
411 PM EDT Mon Aug 18 2025
...HIGH SURF ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 8 PM EDT
THURSDAY...
.TUESDAY...
Rip Current Risk*...
East Coast...............High.
South Coast..............High.
Surf Height...
East Coast...............4 to 5 feet.
South Coast..............4 to 6 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...
East Coast...............In the upper 60s.
South Coast..............Around 70.
Weather.....................Mostly sunny.
High Temperature............In the lower 70s.
Winds.......................Northeast 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...
Rip Current Risk*...
East Coast...............High.
South Coast..............High.
Surf Height...
East Coast...............5 to 7 feet.
South Coast..............5 to 8 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds 10 to 15 mph.
Tides...
Nantucket................High 2.9 feet (MLLW) 10:40 AM EDT.
Low 0.5 feet (MLLW) 03:58 PM EDT.
Great Point..............High 2.8 feet (MLLW) 10:17 AM EDT.
Low 0.4 feet (MLLW) 03:53 PM EDT.
.THURSDAY...Surf height 11 to 15 feet. Mostly sunny. Highs around 70.
Northeast winds around 20 mph.
.FRIDAY...Surf height 13 to 16 feet. Mostly sunny. Highs in the lower
70s. Windy. Northeast winds around 30 mph.
.SATURDAY...Surf height 6 to 9 feet. Sunny. Highs in the lower 70s.
Southeast 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
$$
MAZ023-190800-
Dukes MA-
Including the beaches of Edgartown and Aquinnah
411 PM EDT Mon Aug 18 2025
...HIGH SURF ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 8 PM EDT
THURSDAY...
.TUESDAY...
Rip Current Risk*...........High.
Surf Height.................3 to 5 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly 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...
Rip Current Risk*...........High.
Surf Height.................5 to 8 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds 10 to 15 mph.
Tides...
Squibnocket Point........Low 0.3 feet (MLLW) 11:35 AM EDT.
High 3.4 feet (MLLW) 05:52 PM EDT.
.THURSDAY...Surf height 11 to 15 feet. Mostly sunny. Highs in the
lower 70s. Northeast winds around 20 mph.
.FRIDAY...Surf height 12 to 16 feet. Mostly sunny. Highs in the lower
70s. Breezy. Northeast winds around 25 mph.
.SATURDAY...Surf height 6 to 8 feet. Sunny. Highs in the lower 70s.
Southwest 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
$$
MAZ020-190800-
Southern Bristol MA-
Including the beaches of Westport, Dartmouth, and New Bedford
411 PM EDT Mon Aug 18 2025
...HIGH SURF ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 8 PM EDT
THURSDAY...
.TUESDAY...
Rip Current Risk*...........High.
Surf Height.................4 to 5 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................East winds around 10 mph.
Tides...
Westport Harbor..........Low 0.4 feet (MLLW) 11:06 AM EDT.
High 3.4 feet (MLLW) 05:47 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........High.
Surf Height.................6 to 7 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds around 10 mph.
Tides...
Westport Harbor..........High 3.0 feet (MLLW) 06:11 AM EDT.
Low 0.3 feet (MLLW) 12:10 PM EDT.
.THURSDAY...Surf height 10 to 13 feet. Mostly sunny. Highs in the
lower 70s. Northeast winds around 15 mph.
.FRIDAY...Surf height 11 to 15 feet. Mostly sunny. Highs in the mid
70s. Northeast winds around 20 mph.
.SATURDAY...Surf height 5 to 8 feet. Sunny. Highs in the mid 70s.
Southwest winds around 15 mph.
&&
Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box
$$
RIZ007-190800-
Newport RI-
Including the beaches of Newport, Middletown, and Little Compton
411 PM EDT Mon Aug 18 2025
...HIGH SURF ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 8 PM EDT
THURSDAY...
.TUESDAY...
Rip Current Risk*...........High.
Surf Height.................3 to 6 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly sunny.
High Temperature............In the lower 70s.
Winds.......................Northeast winds around 10 mph, becoming
east in the afternoon.
Tides...
Newport..................Low 0.5 feet (MLLW) 10:33 AM EDT.
High 4.0 feet (MLLW) 05:38 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........High.
Surf Height.................5 to 8 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds around 10 mph.
Tides...
Newport..................High 3.5 feet (MLLW) 06:02 AM EDT.
Low 0.4 feet (MLLW) 11:37 AM EDT.
.THURSDAY...Surf height 10 to 13 feet. Mostly sunny. Highs in the
lower 70s. Northeast winds around 15 mph.
.FRIDAY...Surf height 12 to 16 feet. Mostly sunny. Highs in the mid
70s. Northeast winds around 20 mph.
.SATURDAY...Surf height 5 to 8 feet. Sunny. Highs in the mid 70s.
Southwest 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
$$
RIZ006-190800-
Washington RI-
Including the beaches of Narragansett, Charlestown, and Westerly
411 PM EDT Mon Aug 18 2025
...HIGH SURF ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 8 PM EDT
THURSDAY...
.TUESDAY...
Rip Current Risk*...........High.
Surf Height.................4 to 6 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly 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...
Rip Current Risk*...........High.
Surf Height.................5 to 8 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds around 10 mph.
Tides...
Watch Hill Point.........High 2.6 feet (MLLW) 06:43 AM EDT.
Low 0.3 feet (MLLW) 12:53 PM EDT.
Point Judith (Harbor)....High 3.0 feet (MLLW) 06:13 AM EDT.
Low 0.3 feet (MLLW) 12:26 PM EDT.
Narragansett Pier........Low 0.3 feet (MLLW) 11:48 AM EDT.
.THURSDAY...Surf height 11 to 14 feet. Mostly sunny. Highs in the mid
70s. Northeast winds around 15 mph.
.FRIDAY...Surf height 12 to 16 feet. Mostly sunny. Highs in the mid
70s. Northeast winds around 15 mph.
.SATURDAY...Surf height 6 to 8 feet. Sunny. Highs in the mid 70s.
Southwest winds around 10 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
$$
RIZ008-190800-
Block Island RI-
Including the beaches of Block Island
411 PM EDT Mon Aug 18 2025
...HIGH SURF ADVISORY IN EFFECT FROM 8 AM TUESDAY TO 8 PM EDT
THURSDAY...
.TUESDAY...
Rip Current Risk*...........High.
Surf Height.................Around 5 feet.
Thunderstorm Potential**....None.
UV Index**..................Very High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds around 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...
Rip Current Risk*...........High.
Surf Height.................6 to 7 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds 10 to 15 mph.
Tides...
Block Island (Old Harbor)Low 0.2 feet (MLLW) 12:00 PM EDT.
.THURSDAY...Surf height 11 to 14 feet. Mostly sunny. Highs in the
lower 70s. Northeast winds around 20 mph.
.FRIDAY...Surf height 12 to 16 feet. Sunny. Highs in the mid 70s.
Breezy. Northeast winds around 25 mph.
.SATURDAY...Surf height 7 to 8 feet. Sunny. Highs in the mid 70s.
Southwest 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
$$
MAZ019-190800-
Eastern Plymouth MA-
Including the beaches of Cohasset, Duxbury, Hingham, Kingston,
Marshfield, Plymouth, and Scituate
411 PM EDT Mon Aug 18 2025
.TUESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...........In the upper 60s.
Weather.....................Mostly sunny.
High Temperature............Around 70.
Winds.......................Northeast winds around 10 mph.
Tides...
Scituate Harbor..........High 8.3 feet (MLLW) 08:36 AM EDT.
Low 1.0 feet (MLLW) 02:28 PM EDT.
Plymouth.................High 8.9 feet (MLLW) 08:38 AM EDT.
Low 1.2 feet (MLLW) 02:47 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................2 to 4 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny. A chance of showers.
High Temperature............In the lower 70s.
Winds.......................East winds 5 to 10 mph.
Tides...
Scituate Harbor..........High 8.4 feet (MLLW) 09:40 AM EDT.
Low 0.9 feet (MLLW) 03:30 PM EDT.
Plymouth.................High 9.0 feet (MLLW) 09:41 AM EDT.
Low 1.1 feet (MLLW) 03:46 PM EDT.
.THURSDAY...Surf height 2 to 5 feet. Mostly sunny. Highs around 70.
Northeast winds around 15 mph.
.FRIDAY...Surf height 8 to 11 feet. Mostly sunny. Highs in the lower
70s. Northeast winds around 15 mph.
.SATURDAY...Surf height 5 to 8 feet. Sunny. Highs in the upper 70s.
Southwest winds around 15 mph.
&&
Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box
$$
MAZ015-016-190800-
Suffolk MA-Eastern Norfolk MA-
Including the beaches of Boston, Chelsea, Revere, Winthrop,
Braintree, Milton, Quincy, and Weymouth
411 PM EDT Mon Aug 18 2025
.TUESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...........In the upper 60s.
Weather.....................Mostly sunny.
High Temperature............Around 70.
Winds.......................Northeast 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...
Rip Current Risk*...........Moderate.
Surf Height.................2 to 3 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny. A chance of showers.
High Temperature............In the lower 70s.
Winds.......................East winds 5 to 10 mph.
Tides...
Boston...................High 8.9 feet (MLLW) 09:34 AM EDT.
Low 1.2 feet (MLLW) 03:25 PM EDT.
.THURSDAY...Surf height 2 to 5 feet. Mostly sunny. Highs around 70.
Northeast winds around 10 mph.
.FRIDAY...Surf height 6 to 9 feet. Mostly sunny. Highs in the lower
70s. Northeast winds around 15 mph.
.SATURDAY...Surf height 6 to 8 feet. Sunny. Highs in the upper 70s.
Southwest 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
$$
MAZ007-190800-
Eastern Essex MA-
Including the beaches of Beverly, Gloucester, and Newburyport
411 PM EDT Mon Aug 18 2025
.TUESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...........In the upper 60s.
Weather.....................Mostly sunny.
High Temperature............In the lower 70s.
Winds.......................East winds 5 to 10 mph.
Tides...
Newburyport..............High 7.3 feet (MLLW) 08:46 AM EDT.
Low 0.8 feet (MLLW) 03:05 PM EDT.
Gloucester Harbor........High 8.2 feet (MLLW) 08:34 AM EDT.
Low 1.0 feet (MLLW) 02:26 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................2 to 5 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny. A chance of showers.
High Temperature............In the lower 70s.
Winds.......................Southeast winds 5 to 10 mph.
Tides...
Newburyport..............High 7.3 feet (MLLW) 09:50 AM EDT.
Low 0.7 feet (MLLW) 04:05 PM EDT.
Gloucester Harbor........High 8.4 feet (MLLW) 09:39 AM EDT.
Low 0.9 feet (MLLW) 03:29 PM EDT.
.THURSDAY...Surf height 3 to 6 feet. Mostly sunny. Highs in the lower
70s. Northeast winds around 10 mph.
.FRIDAY...Surf height 9 to 12 feet. Sunny. Highs in the mid 70s.
Northeast winds around 15 mph.
.SATURDAY...Surf height 7 to 8 feet. Sunny. Highs in the upper 70s.
South winds around 15 mph.
&&
Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box
$$