Surf Forecast
Issued by NWS Boston, MA
Issued by NWS Boston, MA
507
FZUS51 KBOX 182010
SRFBOX
Surf Zone Forecast
National Weather Service Boston/Norton MA
410 PM EDT Tue Aug 18 2026
MAZ022-191000-
Barnstable MA-
Including the beaches of Chatham, Eastham, and Provincetown
410 PM EDT Tue Aug 18 2026
...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.REST OF TODAY...
Rip Current Risk*...
East Coast...............High.
Surf Height...
East Coast...............Around 5 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...
East Coast...............Around 70.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................North winds around 5 mph.
Tides...
Nauset Beach.............High 4.4 feet (MLLW) 03:28 PM EDT.
Hyannisport..............High 3.8 feet (MLLW) 05:28 PM EDT.
Barnstable Harbor........High 9.9 feet (MLLW) 04:26 PM EDT.
.WEDNESDAY...
Rip Current Risk*...
East Coast...............Moderate.
Surf Height...
East Coast...............3 to 4 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny. Patchy fog.
High Temperature............In the upper 70s.
Winds.......................South winds 5 to 10 mph.
Tides...
Nauset Beach.............Low 0.7 feet (MLLW) 10:05 AM EDT.
High 4.2 feet (MLLW) 04:18 PM EDT.
Hyannisport..............High 3.1 feet (MLLW) 06:10 AM EDT.
Low 0.9 feet (MLLW) 11:16 AM EDT.
Barnstable Harbor........Low 1.5 feet (MLLW) 11:18 AM EDT.
High 9.6 feet (MLLW) 05:16 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Highs in the mid
70s. West winds around 5 mph.
.FRIDAY...Surf height around 2 feet. Mostly sunny. Highs in the lower
70s. Northeast winds around 5 mph.
.SATURDAY...Surf height 2 to 3 feet. Partly sunny. Showers likely and
a slight chance of thunderstorms. Highs in the mid 70s. East 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
$$
MAZ024-191000-
Nantucket MA-
Including the beaches of Nantucket
410 PM EDT Tue Aug 18 2026
...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.REST OF TODAY...
Rip Current Risk*...
East Coast...............High.
South Coast..............High.
Surf Height...
East Coast...............Around 4 feet.
South Coast..............Around 4 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...
East Coast...............In the upper 60s.
South Coast..............In the lower 70s.
Weather.....................Sunny.
High Temperature............In the mid 70s.
Winds.......................Northeast winds around 5 mph.
Tides...
Nantucket................High 3.6 feet (MLLW) 05:24 PM EDT.
Great Point..............High 3.2 feet (MLLW) 04:58 PM EDT.
.WEDNESDAY...
Rip Current Risk*...
East Coast...............Moderate.
South Coast..............Moderate.
Surf Height...
East Coast...............Around 3 feet.
South Coast..............Around 3 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny.
High Temperature............In the upper 70s.
Winds.......................South winds 5 to 10 mph.
Tides...
Nantucket................High 2.9 feet (MLLW) 06:05 AM EDT.
Low 0.8 feet (MLLW) 11:32 AM EDT.
Great Point..............Low 0.5 feet (MLLW) 11:16 AM EDT.
High 3.1 feet (MLLW) 05:48 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Patchy fog.
Highs in the upper 70s. Southwest winds around 10 mph.
.FRIDAY...Surf height around 2 feet. Mostly sunny. A chance of
showers. Highs in the mid 70s. Northeast winds around 10 mph.
.SATURDAY...Surf height 2 to 3 feet. Mostly cloudy. Showers likely
and a slight chance of thunderstorms. Highs in the mid 70s. East
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
$$
MAZ023-191000-
Dukes MA-
Including the beaches of Edgartown and Aquinnah
410 PM EDT Tue Aug 18 2026
.REST OF TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................Around 4 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...........In the lower 70s.
Weather.....................Sunny.
High Temperature............In the upper 70s.
Winds.......................Southeast winds around 5 mph.
Tides...
Squibnocket Point........High 3.1 feet (MLLW) 12:08 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Low.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny.
High Temperature............In the upper 70s.
Winds.......................South winds 5 to 10 mph.
Tides...
Squibnocket Point........Low 0.5 feet (MLLW) 06:04 AM EDT.
High 2.9 feet (MLLW) 12:58 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Patchy fog.
Highs in the upper 70s. Southwest winds around 5 mph.
.FRIDAY...Surf height around 2 feet. Mostly sunny. Highs in the mid
70s. Northeast winds around 10 mph.
.SATURDAY...Surf height 2 to 3 feet. Mostly cloudy. Showers likely
and a slight chance of thunderstorms. Highs in the mid 70s. East
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
$$
MAZ020-191000-
Southern Bristol MA-
Including the beaches of Westport, Dartmouth, and New Bedford
410 PM EDT Tue Aug 18 2026
.REST OF TODAY...
Rip Current Risk*...........Low.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly sunny.
High Temperature............In the upper 70s.
Winds.......................South winds around 5 mph.
Tides...
Westport Harbor..........High 3.2 feet (MLLW) 01:02 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Low.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny. Patchy fog.
High Temperature............Around 80.
Winds.......................South winds 5 to 10 mph.
Tides...
Westport Harbor..........Low 0.5 feet (MLLW) 06:39 AM EDT.
High 3.0 feet (MLLW) 01:52 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Patchy fog.
Highs in the lower 80s. West winds around 5 mph.
.FRIDAY...Surf height around 2 feet. Mostly sunny. Highs in the upper
70s. Northeast winds around 5 mph.
.SATURDAY...Surf height 2 to 3 feet. Partly sunny. A chance of
showers and a slight chance of thunderstorms. Highs in the mid 70s.
East winds around 10 mph.
&&
Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box
$$
RIZ007-191000-
Newport RI-
Including the beaches of Newport, Middletown, and Little Compton
410 PM EDT Tue Aug 18 2026
.REST OF TODAY...
Rip Current Risk*...........Low.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...........In the lower 70s.
Weather.....................Mostly sunny.
High Temperature............In the upper 70s.
Winds.......................South winds around 5 mph.
Tides...
Newport..................High 3.8 feet (MLLW) 12:53 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Low.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny.
High Temperature............Around 80.
Winds.......................South winds 5 to 10 mph.
Tides...
Newport..................Low 0.6 feet (MLLW) 06:06 AM EDT.
High 3.5 feet (MLLW) 01:43 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Patchy fog.
Highs in the upper 70s. West winds around 5 mph.
.FRIDAY...Surf height around 2 feet. Mostly sunny. Highs in the upper
70s. Northeast winds around 10 mph.
.SATURDAY...Surf height 2 to 3 feet. Partly sunny. A chance of
showers and a slight chance of thunderstorms. Highs in the mid 70s.
East 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
$$
RIZ006-191000-
Washington RI-
Including the beaches of Narragansett, Charlestown, and Westerly
410 PM EDT Tue Aug 18 2026
.REST OF TODAY...
Rip Current Risk*...........Low.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...........In the mid 70s.
Weather.....................Mostly sunny.
High Temperature............In the upper 70s.
Winds.......................South winds around 5 mph.
Tides...
Watch Hill Point.........High 2.8 feet (MLLW) 01:34 PM EDT.
Point Judith (Harbor)....High 3.3 feet (MLLW) 12:55 PM EDT.
Narragansett Pier........High 3.5 feet (MLLW) 12:42 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Low.
Surf Height.................2 to 3 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny.
High Temperature............In the lower 80s.
Winds.......................South winds 5 to 10 mph.
Tides...
Watch Hill Point.........Low 0.4 feet (MLLW) 07:22 AM EDT.
High 2.6 feet (MLLW) 02:24 PM EDT.
Point Judith (Harbor)....Low 0.6 feet (MLLW) 06:37 AM EDT.
High 3.1 feet (MLLW) 01:44 PM EDT.
Narragansett Pier........Low 0.6 feet (MLLW) 06:17 AM EDT.
High 3.2 feet (MLLW) 01:32 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Patchy fog.
Highs in the lower 80s. West winds around 5 mph.
.FRIDAY...Surf height around 2 feet. Mostly sunny. Highs in the upper
70s. Northeast winds around 5 mph.
.SATURDAY...Surf height 2 to 3 feet. Partly sunny. A chance of
showers and a slight chance of thunderstorms. Highs in the mid 70s.
East 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
$$
RIZ008-191000-
Block Island RI-
Including the beaches of Block Island
410 PM EDT Tue Aug 18 2026
.REST OF TODAY...
Rip Current Risk*...........Low.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
UV Index**..................High.
Water Temperature...........In the mid 70s.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Southwest winds around 5 mph.
Tides...
Block Island (Old Harbor)High 3.1 feet (MLLW) 12:33 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Low.
Surf Height.................2 to 3 feet.
Thunderstorm Potential**....None.
Weather.....................Mostly sunny.
High Temperature............In the upper 70s.
Winds.......................South winds 5 to 10 mph.
Tides...
Block Island (Old Harbor)Low 0.6 feet (MLLW) 06:05 AM EDT.
High 2.9 feet (MLLW) 01:22 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Patchy fog.
Highs in the upper 70s. West winds around 5 mph.
.FRIDAY...Surf height around 2 feet. Mostly sunny. Highs in the mid
70s. Northeast winds around 10 mph.
.SATURDAY...Surf height 2 to 3 feet. Mostly cloudy. Showers likely
and a slight chance of thunderstorms. Highs in the mid 70s. East
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
$$
MAZ019-191000-
Eastern Plymouth MA-
Including the beaches of Cohasset, Duxbury, Hingham, Kingston,
Marshfield, Plymouth, and Scituate
410 PM EDT Tue Aug 18 2026
...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.REST OF TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................2 to 4 feet.
Thunderstorm Potential**....None.
UV Index**..................Moderate.
Water Temperature...........In the upper 60s.
Weather.....................Sunny.
High Temperature............In the mid 70s.
Winds.......................Northeast winds around 5 mph.
Tides...
Scituate Harbor..........High 9.4 feet (MLLW) 04:17 PM EDT.
Plymouth.................High 10.2 feet (MLLW) 04:21 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................2 to 3 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny until 12 PM, then sunny.
High Temperature............In the lower 80s.
Winds.......................South winds 5 to 10 mph.
Tides...
Scituate Harbor..........Low 1.2 feet (MLLW) 10:47 AM EDT.
High 9.1 feet (MLLW) 05:07 PM EDT.
Plymouth.................Low 1.4 feet (MLLW) 11:07 AM EDT.
High 9.9 feet (MLLW) 05:09 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Highs in the
upper 70s. Northwest winds around 5 mph.
.FRIDAY...Surf height around 2 feet. Mostly sunny. Highs in the mid
70s. Northeast winds around 10 mph.
.SATURDAY...Surf height around 2 feet. Partly sunny. A chance of
showers. Highs in the lower 70s. East winds around 10 mph.
&&
Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box
$$
MAZ015-016-191000-
Suffolk MA-Eastern Norfolk MA-
Including the beaches of Boston, Chelsea, Revere, Winthrop,
Braintree, Milton, Quincy, and Weymouth
410 PM EDT Tue Aug 18 2026
...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.REST OF TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................2 to 4 feet.
Thunderstorm Potential**....None.
UV Index**..................Moderate.
Water Temperature...........In the upper 60s.
Weather.....................Sunny.
High Temperature............In the mid 70s.
Winds.......................East winds around 5 mph.
Tides...
Boston...................High 9.9 feet (MLLW) 04:15 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................2 to 3 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny until 11 AM, then sunny.
Patchy fog.
High Temperature............In the lower 80s.
Winds.......................South winds 5 to 10 mph.
Tides...
Boston...................Low 1.5 feet (MLLW) 10:48 AM EDT.
High 9.6 feet (MLLW) 05:05 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Highs in the
lower 80s. Northwest winds around 5 mph.
.FRIDAY...Surf height around 2 feet. Mostly sunny. Highs in the mid
70s. Northeast winds around 5 mph.
.SATURDAY...Surf height around 2 feet. Partly sunny. A chance of
showers. Highs in the lower 70s. East 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
$$
MAZ007-191000-
Eastern Essex MA-
Including the beaches of Beverly, Gloucester, and Newburyport
410 PM EDT Tue Aug 18 2026
...HIGH RIP CURRENT RISK IN EFFECT UNTIL 8 PM EDT THIS EVENING...
.REST OF TODAY...
Rip Current Risk*...........Moderate.
Surf Height.................2 to 4 feet.
Thunderstorm Potential**....None.
UV Index**..................Moderate.
Water Temperature...........In the upper 60s.
Weather.....................Sunny.
High Temperature............In the mid 70s.
Winds.......................East winds around 5 mph.
Tides...
Newburyport..............High 8.6 feet (MLLW) 04:34 PM EDT.
Gloucester Harbor........High 9.4 feet (MLLW) 04:15 PM EDT.
.WEDNESDAY...
Rip Current Risk*...........Moderate.
Surf Height.................Around 3 feet.
Thunderstorm Potential**....None.
Weather.....................Partly sunny until 1 PM, then sunny.
Patchy fog.
High Temperature............Around 80.
Winds.......................Light and variable winds, becoming
south around 5 mph in the afternoon.
Tides...
Newburyport..............Low 0.9 feet (MLLW) 11:25 AM EDT.
High 8.4 feet (MLLW) 05:22 PM EDT.
Gloucester Harbor........Low 1.2 feet (MLLW) 10:44 AM EDT.
High 9.0 feet (MLLW) 05:05 PM EDT.
.THURSDAY...Surf height around 2 feet. Mostly sunny. Highs in the
upper 70s. North winds around 5 mph.
.FRIDAY...Surf height around 2 feet. Sunny. Highs in the mid 70s.
Northeast winds around 5 mph.
.SATURDAY...Surf height around 2 feet. Partly sunny. A chance of
showers. Highs in the lower 70s. East winds around 5 mph.
&&
Rip Current Risk Category
* Low Risk - The risk for rip currents is low, however,
life-threatening rip currents often occur in the vicinity of groins,
jetties, reefs, and piers.
* Moderate Risk - Life-threatening rip currents are possible in the
surf zone.
* High Risk - Life-threatening rip currents are likely in the surf
zone.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/box
$$