Marine Weather and Tide Forecast for East Sandwich, MA
 | Sunrise 5:48 AM Sunset 7:42 PM Moonrise 7:57 AM Moonset 8:40 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
ANZ231 Cape Cod Bay- 103 Pm Edt Fri Aug 14 2026
This afternoon - NE winds around 5 kt. Seas 1 foot or less. Wave detail: nw 1 foot at 3 seconds and ne 1 foot at 11 seconds.
Tonight - SW winds 5 to 10 kt, becoming N with gusts up to 20 kt after midnight. Seas around 2 ft. Wave detail: nw 1 foot at 3 seconds and ne 1 foot at 10 seconds.
Sat - N winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave detail: N 1 foot at 3 seconds, becoming N 1 foot at 4 seconds.
Sat night - SE winds around 5 kt, becoming sw after midnight. Seas 1 foot or less. Wave detail: N 1 foot at 4 seconds.
Sun - S winds 5 to 10 kt with gusts up to 20 kt. Seas 1 foot or less, then around 2 ft in the afternoon. Wave detail: nw 1 foot at 4 seconds, becoming S 1 foot at 3 seconds and ne 1 foot at 4 seconds.
Sun night - S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave detail: se 2 ft at 4 seconds. Showers likely after midnight.
Mon - S winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 3 ft. Showers likely.
Mon night - NW winds 5 to 10 kt. Seas around 2 ft. A chance of showers.
Tue and Tue night - N winds 5 to 10 kt, becoming s. Seas around 2 ft, then 1 foot or less.
seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height.
ANZ200 103 Pm Edt Fri Aug 14 2026
Synopsis for massachusetts and rhode island coastal waters - High pressure builds across the new england waters this weekend, leading to tranquil boating conditions. A progressive system brings unsettled weather Sunday night into Monday, with the potential for gusty winds and building seas that may warrant small craft advisories. High pressure returns Tuesday through the middle of next week.
7 Day Forecast for Marine Location Near East Sandwich, MA
NEW! Add second zone forecast
| Cape Cod Canal Click for Map Fri -- 12:37 AM EDT 10.54 feet High Tide Fri -- 05:49 AM EDT Sunrise Fri -- 06:54 AM EDT -1.15 feet Low Tide Fri -- 07:57 AM EDT Moonrise Fri -- 01:08 PM EDT 9.73 feet High Tide Fri -- 07:13 PM EDT -0.59 feet Low Tide Fri -- 07:43 PM EDT Sunset Fri -- 08:40 PM EDT Moonset Tide / Current data from XTide NOT FOR NAVIGATION |
Cape Cod Canal, Sandwich, Cape Cod Bay, Massachusetts, Tide feet
| 12 am |
| 10.3 |
| 1 am |
| 10.4 |
| 2 am |
| 9.3 |
| 3 am |
| 7.2 |
| 4 am |
| 4.6 |
| 5 am |
| 1.7 |
| 6 am |
| -0.5 |
| 7 am |
| -1.1 |
| 8 am |
| -0.3 |
| 9 am |
| 1.6 |
| 10 am |
| 4 |
| 11 am |
| 6.6 |
| 12 pm |
| 8.8 |
| 1 pm |
| 9.7 |
| 2 pm |
| 9.2 |
| 3 pm |
| 7.7 |
| 4 pm |
| 5.6 |
| 5 pm |
| 3 |
| 6 pm |
| 0.6 |
| 7 pm |
| -0.6 |
| 8 pm |
| -0.1 |
| 9 pm |
| 1.5 |
| 10 pm |
| 3.8 |
| 11 pm |
| 6.4 |
| Cape Cod Canal Click for Map Flood direction 53 true Ebb direction 233 true Fri -- 02:24 AM EDT -3.71 knots Max Ebb Fri -- 05:14 AM EDT 0.00 knots Slack Fri -- 05:49 AM EDT Sunrise Fri -- 07:57 AM EDT Moonrise Fri -- 08:53 AM EDT 3.96 knots Max Flood Fri -- 11:37 AM EDT -0.00 knots Slack Fri -- 02:45 PM EDT -3.61 knots Max Ebb Fri -- 05:32 PM EDT 0.01 knots Slack Fri -- 07:43 PM EDT Sunset Fri -- 08:40 PM EDT Moonset Fri -- 08:50 PM EDT 3.60 knots Max Flood Fri -- 11:52 PM EDT -0.01 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
Cape Cod Canal, east end (depth 8 ft), Massachusetts Current, knots
| 12 am |
| -2.2 |
| 1 am |
| -3.4 |
| 2 am |
| -3.7 |
| 3 am |
| -3.6 |
| 4 am |
| -2.7 |
| 5 am |
| -0.6 |
| 6 am |
| 1.7 |
| 7 am |
| 3.1 |
| 8 am |
| 3.8 |
| 9 am |
| 4 |
| 10 am |
| 3.4 |
| 11 am |
| 1.6 |
| 12 pm |
| -1 |
| 1 pm |
| -2.8 |
| 2 pm |
| -3.5 |
| 3 pm |
| -3.6 |
| 4 pm |
| -3 |
| 5 pm |
| -1.3 |
| 6 pm |
| 1.1 |
| 7 pm |
| 2.8 |
| 8 pm |
| 3.5 |
| 9 pm |
| 3.6 |
| 10 pm |
| 3.3 |
| 11 pm |
| 2 |
FXUS61 KBOX 141752 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 152 PM EDT Fri Aug 14 2026
WHAT HAS CHANGED
Risk for scattered showers and storms have increased this afternoon into early tonight, mainly in interior Southern New England.
KEY MESSAGES
- Scattered showers and t-storms mainly for interior Southern New England this afternoon through sundown. A couple could produce small hail and gusty winds.
- Pleasant weekend with seasonably cool temperatures and comfortable humidities.
- Rain chances return late Sunday into Monday, followed by quieter weather through most of next week.
DISCUSSION
KEY MESSAGE 1...Scattered showers and t-storms mainly for interior Southern New England this afternoon through sundown. A couple could produce small hail and gusty winds.
Main concern for the rest of the afternoon into early tonight revolves around low-topped showers and thunderstorms. A rather potent shortwave disturbance is visualized in water vapor imagery early this afternoon near Ottawa ON, forecast to move southeast through New England into early tonight.
Modest instability given dewpoints falling into the mid 50s is present across most of New England, but stronger forcing and the cool pocket of air aloft due to the shortwave is contributing to scattered convective showers across NY and VT. BUFKIT soundings show strong 925-700 mb lapse rates as well as strong mid-upper level flow aloft, but with low equilibrium levels around 25-28k and wetbulb zero heights on the order of 9000 ft. Have seen some lightning strikes in eastern Ontario, and anticipate some of these showers could blossom into scattered t-storms. With the cold profiles aloft, even stronger showers could produce graupel/"dippin' dots" hailstones, with deeper t-storms capable of hail up to 1" diameter with locally strong/gusty winds. The severe weather risk level has increased to a Level 1 of 5, but still think the risk storms become severe is on the low side. The best chance for storms is mainly from a FIT- ORH- PVD line south and west, with showers more likely into eastern MA.
Showers/storms are expected to dissipate into the early-mid evening hours associated with sundown and passage of the shortwave disturbance.
Clearing skies overnight, which will bring a risk for patchy river valley fog as winds go light northerly. A big airmass change comes in tonight with much lower humidity levels and lows in the mid 50s to around 60, so a good night to crack open the windows!
KEY MESSAGE 2...Pleasant weekend with seasonably cool temperatures and comfortable humidities.
Beautiful weekend shaping up as a 1024 mb high pressure establishes itself over Southern New England Saturday, then begins to move offshore into Sunday. Full sun, light northerly winds and dewpoints falling into the 40s Saturday will bring a taste of early-autumn, with highs in the mid 70s to around 80 as 850 mb temps run around +7 to +10C. Very strong radiational cooling setup Saturday night, with widespread 50s for lows as ridge of high pressure centers itself overhead, to go along with patchy river valley fog. A bit more of an increase in cloud cover Sunday, with risk for showers developing late in the day on Sunday in western New England at earliest, but most of the daytime hours are dry.
KEY MESSAGE 3...Rain chances return late Sunday into Monday, followed by quieter weather through most of next week.
Sunday starts off under mid-level ridging with heights falling through the day ahead of an approaching shortwave trough in the flow. This will keep conditions dry most of the day Sunday with temperatures in the upper 70s/low 80s. There is general agreement across most guidance in rain arriving Sunday night, spreading from west to east. Expect batches of showers to continue through Monday.
Can't rule out an embedded storm or downpour with marginal instability around. With PWATs 1.5-1.8", brief heavier rain rates are possible. Mid-level winds will be strong enough to keep any heavier showers or storms moving if there are any. This should help minimize the risk for flash flooding. Can't rule out isolated instances of flash flood impacts in poor drainage/urban areas given the potenial for embedded heavier downpours. This has been reflected in the WPC ERO as a Marginal Risk (Level 1 of 4). For total amounts, ensemble guidance shows a range of 0.25" to 0.50" across southern New England. Localized higher amounts are possible, especially within any downpours.
A cold front moves through the region by Tuesday with a drier airmass advecting into southern New England behind it. Conditions remain generally dry Tuesday and Wednesday with zonal flow aloft.
Temperatures will likely be in seasonable ranges in the upper 70s to low 80s with dewpoints in the low to mid 60s keeping humidity leaning toward the more comfortable side. Ensemble guidance signal for a trend toward unsettled weather by late-week with chances for rain returning to the forecast.
AVIATION /18Z FRIDAY THROUGH WEDNESDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update:
Through 00z Saturday: High confidence.
VFR generally governs. SCT low-topped SHRA/TS now developing across NY and western New England are stilll anticipated to to move SE into western portions of Southern New England through sundown, and these could bring MVFR- IFR visby, small hail and localized strong wind gusts mainly for BDL and ORH south and west, with less of a shot at PVD and BOS. NW winds around 5-10 kt, with occasional sub-20 kt gusts.
Tonight: High confidence.
SHRA/isolated TS to move offshore and/or weaken by 02z with mainly VFR conditions. Latest guidance seems more favorable for MVFR-IFR patchy mist/fog development toward daybreak in interior river valleys (e.g. BDL) and perhaps at BED too. Light north winds.
Saturday and Saturday Night: High confidence.
VFR. North winds 5-10 kt, with seabreezes near the coast during the daytime hours. Patchy river valley fog with IFR visbys overnight.
KBOS Terminal...High confidence in TAF. Main risk for a few brief showers in the vicinity of the terminal will be after 21z/22z until about 02z. Low risk for a rumble of thunder too.
Odds favor sea breeze remaining offshore this afternoon...but we do expect one to develop on Sat.
KBDL Terminal...High confidence in TAF. Better chance for TSRA after 19z thru sundown.
Outlook /Saturday Night through Wednesday/...
Sunday: VFR. Breezy. Slight chance SHRA.
Sunday Night: Mainly VFR, with local IFR possible. Breezy.
SHRA, slight chance TSRA.
Monday: Mainly VFR, with local IFR possible. Breezy. Slight chance SHRA.
Monday Night through Tuesday Night: VFR.
Wednesday: VFR. Breezy.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through Saturday Night: High confidence.
Winds and seas remain below small craft advisory criteria through Saturday night. NW winds 10-15 kt decrease and become northerly around 10 kt tonight into Saturday. Risk for showers and thunderstorms with small hail and brief strong gusty winds over mainly southern waters this afternoon and tonight.
Otherwise, good visibility expected Saturday.
Outlook /Saturday Night through Wednesday/...
Sunday: Winds less than 25 kt.
Sunday Night: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Seas locally approaching 5 ft. Chance of rain showers, slight chance of thunderstorms.
Monday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Seas up to 5 ft. Chance of rain showers, slight chance of thunderstorms.
Monday Night: Winds less than 25 kt. Seas up to 5 ft. Slight chance of rain showers.
Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Tuesday Night through Wednesday: Winds less than 25 kt.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...None.
Area Forecast Discussion National Weather Service Boston/Norton MA 152 PM EDT Fri Aug 14 2026
WHAT HAS CHANGED
Risk for scattered showers and storms have increased this afternoon into early tonight, mainly in interior Southern New England.
KEY MESSAGES
- Scattered showers and t-storms mainly for interior Southern New England this afternoon through sundown. A couple could produce small hail and gusty winds.
- Pleasant weekend with seasonably cool temperatures and comfortable humidities.
- Rain chances return late Sunday into Monday, followed by quieter weather through most of next week.
DISCUSSION
KEY MESSAGE 1...Scattered showers and t-storms mainly for interior Southern New England this afternoon through sundown. A couple could produce small hail and gusty winds.
Main concern for the rest of the afternoon into early tonight revolves around low-topped showers and thunderstorms. A rather potent shortwave disturbance is visualized in water vapor imagery early this afternoon near Ottawa ON, forecast to move southeast through New England into early tonight.
Modest instability given dewpoints falling into the mid 50s is present across most of New England, but stronger forcing and the cool pocket of air aloft due to the shortwave is contributing to scattered convective showers across NY and VT. BUFKIT soundings show strong 925-700 mb lapse rates as well as strong mid-upper level flow aloft, but with low equilibrium levels around 25-28k and wetbulb zero heights on the order of 9000 ft. Have seen some lightning strikes in eastern Ontario, and anticipate some of these showers could blossom into scattered t-storms. With the cold profiles aloft, even stronger showers could produce graupel/"dippin' dots" hailstones, with deeper t-storms capable of hail up to 1" diameter with locally strong/gusty winds. The severe weather risk level has increased to a Level 1 of 5, but still think the risk storms become severe is on the low side. The best chance for storms is mainly from a FIT- ORH- PVD line south and west, with showers more likely into eastern MA.
Showers/storms are expected to dissipate into the early-mid evening hours associated with sundown and passage of the shortwave disturbance.
Clearing skies overnight, which will bring a risk for patchy river valley fog as winds go light northerly. A big airmass change comes in tonight with much lower humidity levels and lows in the mid 50s to around 60, so a good night to crack open the windows!
KEY MESSAGE 2...Pleasant weekend with seasonably cool temperatures and comfortable humidities.
Beautiful weekend shaping up as a 1024 mb high pressure establishes itself over Southern New England Saturday, then begins to move offshore into Sunday. Full sun, light northerly winds and dewpoints falling into the 40s Saturday will bring a taste of early-autumn, with highs in the mid 70s to around 80 as 850 mb temps run around +7 to +10C. Very strong radiational cooling setup Saturday night, with widespread 50s for lows as ridge of high pressure centers itself overhead, to go along with patchy river valley fog. A bit more of an increase in cloud cover Sunday, with risk for showers developing late in the day on Sunday in western New England at earliest, but most of the daytime hours are dry.
KEY MESSAGE 3...Rain chances return late Sunday into Monday, followed by quieter weather through most of next week.
Sunday starts off under mid-level ridging with heights falling through the day ahead of an approaching shortwave trough in the flow. This will keep conditions dry most of the day Sunday with temperatures in the upper 70s/low 80s. There is general agreement across most guidance in rain arriving Sunday night, spreading from west to east. Expect batches of showers to continue through Monday.
Can't rule out an embedded storm or downpour with marginal instability around. With PWATs 1.5-1.8", brief heavier rain rates are possible. Mid-level winds will be strong enough to keep any heavier showers or storms moving if there are any. This should help minimize the risk for flash flooding. Can't rule out isolated instances of flash flood impacts in poor drainage/urban areas given the potenial for embedded heavier downpours. This has been reflected in the WPC ERO as a Marginal Risk (Level 1 of 4). For total amounts, ensemble guidance shows a range of 0.25" to 0.50" across southern New England. Localized higher amounts are possible, especially within any downpours.
A cold front moves through the region by Tuesday with a drier airmass advecting into southern New England behind it. Conditions remain generally dry Tuesday and Wednesday with zonal flow aloft.
Temperatures will likely be in seasonable ranges in the upper 70s to low 80s with dewpoints in the low to mid 60s keeping humidity leaning toward the more comfortable side. Ensemble guidance signal for a trend toward unsettled weather by late-week with chances for rain returning to the forecast.
AVIATION /18Z FRIDAY THROUGH WEDNESDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update:
Through 00z Saturday: High confidence.
VFR generally governs. SCT low-topped SHRA/TS now developing across NY and western New England are stilll anticipated to to move SE into western portions of Southern New England through sundown, and these could bring MVFR- IFR visby, small hail and localized strong wind gusts mainly for BDL and ORH south and west, with less of a shot at PVD and BOS. NW winds around 5-10 kt, with occasional sub-20 kt gusts.
Tonight: High confidence.
SHRA/isolated TS to move offshore and/or weaken by 02z with mainly VFR conditions. Latest guidance seems more favorable for MVFR-IFR patchy mist/fog development toward daybreak in interior river valleys (e.g. BDL) and perhaps at BED too. Light north winds.
Saturday and Saturday Night: High confidence.
VFR. North winds 5-10 kt, with seabreezes near the coast during the daytime hours. Patchy river valley fog with IFR visbys overnight.
KBOS Terminal...High confidence in TAF. Main risk for a few brief showers in the vicinity of the terminal will be after 21z/22z until about 02z. Low risk for a rumble of thunder too.
Odds favor sea breeze remaining offshore this afternoon...but we do expect one to develop on Sat.
KBDL Terminal...High confidence in TAF. Better chance for TSRA after 19z thru sundown.
Outlook /Saturday Night through Wednesday/...
Sunday: VFR. Breezy. Slight chance SHRA.
Sunday Night: Mainly VFR, with local IFR possible. Breezy.
SHRA, slight chance TSRA.
Monday: Mainly VFR, with local IFR possible. Breezy. Slight chance SHRA.
Monday Night through Tuesday Night: VFR.
Wednesday: VFR. Breezy.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through Saturday Night: High confidence.
Winds and seas remain below small craft advisory criteria through Saturday night. NW winds 10-15 kt decrease and become northerly around 10 kt tonight into Saturday. Risk for showers and thunderstorms with small hail and brief strong gusty winds over mainly southern waters this afternoon and tonight.
Otherwise, good visibility expected Saturday.
Outlook /Saturday Night through Wednesday/...
Sunday: Winds less than 25 kt.
Sunday Night: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Seas locally approaching 5 ft. Chance of rain showers, slight chance of thunderstorms.
Monday: Low risk for Small Craft Advisory winds with gusts up to 30 kt. Seas up to 5 ft. Chance of rain showers, slight chance of thunderstorms.
Monday Night: Winds less than 25 kt. Seas up to 5 ft. Slight chance of rain showers.
Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Tuesday Night through Wednesday: Winds less than 25 kt.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| 44090 | 9 mi | 34 min | 71°F | 73°F | 1 ft | |||
| WAXM3 - Waquoit Bay Reserve, MA | 12 mi | 64 min | NNE 1 | 79°F | 30.01 | 57°F | ||
| 44020 - NANTUCKET SOUND | 20 mi | 34 min | NNE 5.8G | 75°F | 78°F | 30.00 | ||
| BZBM3 - 8447930 - Woods Hole, MA | 20 mi | 46 min | 30.04 | |||||
| NBGM3 | 26 mi | 46 min | S 9.9G | 30.04 | ||||
| NTKM3 - 8449130 - Nantucket Island, MA | 37 mi | 46 min | ENE 6G | 78°F | 30.04 | |||
| FRVM3 - 8447386 - Fall River, MA | 38 mi | 46 min | 78°F | 30.04 | ||||
| BLTM3 - 8447387 - Borden Flats Light at Fall River, MA | 39 mi | 46 min | SSW 4.1G | 30.03 | ||||
| BUZM3 - Buzzards Bay, MA | 39 mi | 64 min | S 7G | 30.04 | ||||
| FRXM3 | 39 mi | 64 min | 81°F | 55°F | ||||
| 44085 | 40 mi | 34 min | 73°F | 70°F | 1 ft | |||
| 44013 - BOSTON 16 NM East of Boston, MA | 43 mi | 34 min | SSE 5.8G | 72°F | 72°F | 30.02 | 61°F | |
| PRUR1 | 46 mi | 64 min | 80°F | 56°F | ||||
| CPTR1 - 8452944 - Conimicut Light, RI | 47 mi | 46 min | WNW 7G | 78°F | 30.03 | |||
| NAXR1 - Narragansett Bay Reserve, RI | 48 mi | 64 min | W 2.9 | 81°F | 30.04 | 58°F | ||
| PTCR1 - 8452951 - Potter Cove, Prudence Island, RI | 48 mi | 46 min | SSW 2.9G | 30.03 | ||||
| NWPR1 - 8452660 - Newport, RI | 49 mi | 46 min | N 2.9G | 70°F | 30.03 |
Wind History for Nantucket Island, MA
toggle option: (graph/table)
Link to 5 hour of 5 minute data for KFMH
Terminal Aerodrome Forecast (TAF) for KFMH
Wind History Graph: FMH
(wind in knots)
GEOS Local Image of north east
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