Marine Weather and Tide Forecast for East Dennis, MA
 | Sunrise 5:05 AM Sunset 8:16 PM Moonrise 3:11 AM Moonset 7:10 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
ANZ231 Cape Cod Bay- 703 Am Edt Sat Jun 13 2026
Today - NW winds 10 to 15 kt with gusts up to 20 kt, becoming ne around 5 kt this afternoon. Seas around 2 ft this morning, then 1 foot or less. Wave detail: nw 1 foot at 3 seconds and S 1 foot at 6 seconds, becoming nw 1 foot at 4 seconds and S 1 foot at 7 seconds.
Tonight - SW winds 5 to 10 kt, becoming W after midnight. Seas 1 foot or less. Wave detail: nw 1 foot at 3 seconds and S 1 foot at 6 seconds.
Sun - SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts up to 25 kt in the afternoon. Seas 1 foot or less, then 2 to 3 ft in the afternoon. Wave detail: sw 1 foot at 4 seconds and E 1 foot at 8 seconds, becoming sw 2 ft at 3 seconds and E 1 foot at 9 seconds.
Sun night - S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft. Wave detail: sw 3 ft at 3 seconds and E 1 foot at 8 seconds. A chance of showers in the evening, then showers likely with a chance of tstms after midnight.
Mon - W winds 5 to 10 kt. Seas around 2 ft in the morning, then 1 foot or less. Wave detail: sw 2 ft at 3 seconds and E 1 foot at 8 seconds, becoming W 1 foot at 2 seconds and S 1 foot at 3 seconds. A chance of showers in the morning.
Mon night - W winds 5 to 10 kt. Seas around 2 ft. Wave detail: S 2 ft at 7 seconds and W 1 foot at 2 seconds.
Tue through Wed night - S winds 5 to 10 kt with gusts up to 20 kt. Seas around 2 ft.
winds and seas higher in and near tstms.
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.
winds and seas higher in and near tstms.
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 703 Am Edt Sat Jun 13 2026
Synopsis for massachusetts and rhode island coastal waters - Calm conditions across the coastal waters through the weekend with 2-4 foot seas through Saturday, 1-3 food by Sunday. A passing low pressure Sunday night into Monday will bring rain showers, a few Thunderstorms, and seas up to 4 feet. Winds become nw overnight through Saturday, increasing to 15-20 kts out of the sw Sunday night with gusts 20-25 kts as that low pressure passes. High pressure returns next week.
7 Day Forecast for Marine Location Near East Dennis, MA
NEW! Add second zone forecast
| Sesuit Harbor Click for Map Sat -- 03:11 AM EDT Moonrise Sat -- 04:04 AM EDT -0.78 feet Low Tide Sat -- 05:05 AM EDT Sunrise Sat -- 10:15 AM EDT 9.87 feet High Tide Sat -- 04:16 PM EDT 0.23 feet Low Tide Sat -- 07:09 PM EDT Moonset Sat -- 08:16 PM EDT Sunset Sat -- 10:31 PM EDT 11.84 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Sesuit Harbor, East Dennis, Cape Cod Bay, Massachusetts, Tide feet
| 12 am |
| 7.8 |
| 1 am |
| 5.3 |
| 2 am |
| 2.6 |
| 3 am |
| 0.2 |
| 4 am |
| -0.8 |
| 5 am |
| -0 |
| 6 am |
| 1.9 |
| 7 am |
| 4.2 |
| 8 am |
| 6.5 |
| 9 am |
| 8.6 |
| 10 am |
| 9.8 |
| 11 am |
| 9.4 |
| 12 pm |
| 7.9 |
| 1 pm |
| 5.9 |
| 2 pm |
| 3.7 |
| 3 pm |
| 1.6 |
| 4 pm |
| 0.3 |
| 5 pm |
| 0.7 |
| 6 pm |
| 2.6 |
| 7 pm |
| 5.1 |
| 8 pm |
| 7.6 |
| 9 pm |
| 10 |
| 10 pm |
| 11.6 |
| 11 pm |
| 11.6 |
| Barnstable Harbor (depth 7 ft) Click for Map Flood direction 192 true Ebb direction 4 true Sat -- 01:43 AM EDT -1.38 knots Max Ebb Sat -- 03:12 AM EDT Moonrise Sat -- 04:22 AM EDT 0.00 knots Slack Sat -- 05:05 AM EDT Sunrise Sat -- 07:40 AM EDT 1.16 knots Max Flood Sat -- 10:04 AM EDT -0.00 knots Slack Sat -- 01:48 PM EDT -1.21 knots Max Ebb Sat -- 04:29 PM EDT 0.00 knots Slack Sat -- 07:09 PM EDT Moonset Sat -- 07:46 PM EDT 1.26 knots Max Flood Sat -- 08:16 PM EDT Sunset Sat -- 10:18 PM EDT -0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
Barnstable Harbor (depth 7 ft), Cape Cod Bay, Massachusetts Current, knots
| 12 am |
| -1.1 |
| 1 am |
| -1.3 |
| 2 am |
| -1.4 |
| 3 am |
| -1.1 |
| 4 am |
| -0.4 |
| 5 am |
| 0.4 |
| 6 am |
| 0.9 |
| 7 am |
| 1.1 |
| 8 am |
| 1.1 |
| 9 am |
| 0.8 |
| 10 am |
| 0.1 |
| 11 am |
| -0.5 |
| 12 pm |
| -0.9 |
| 1 pm |
| -1.1 |
| 2 pm |
| -1.2 |
| 3 pm |
| -1 |
| 4 pm |
| -0.4 |
| 5 pm |
| 0.3 |
| 6 pm |
| 0.8 |
| 7 pm |
| 1.2 |
| 8 pm |
| 1.2 |
| 9 pm |
| 0.9 |
| 10 pm |
| 0.2 |
| 11 pm |
| -0.5 |
FXUS61 KBOX 130807 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 407 AM EDT Sat Jun 13 2026
WHAT HAS CHANGED
No significant changes to the forecast.
KEY MESSAGES
- Mostly dry with above normal temperatures continuing through the weekend with humidity on the decrease.
- Expecting showers and thunderstorms Sunday night with the risk for severe weather remaining low.
- Seasonable temperatures and lower humidity returns through the first half of next week before a return to a more active pattern late-week.
DISCUSSION
KEY MESSAGE 1... Mostly dry with above normal temperatures continuing through the weekend with humidity on the decrease.
Temperatures remain in the upper 80s to low 90s through the weekend as an unseasonably warm airmass remains draped over New England. However, there will be a noticeable difference in the "feels like" temperatures compared to the last few days as dewpoints drop to the mid to upper 50s in the wake of a cold front pushing offshore this morning. With a ridging pattern moving into place aloft, expecting conditions to remain dry through most of Sunday.
KEY MESSAGE 2...Expecting showers and thunderstorms Sunday night with the risk for severe weather remaining low.
A cold front pushing into Southern New England Sunday night will increase the risk for showers and thunderstorms.
Instability likely remains low heading into the overnight hours, despite elevated shear magnitudes, which will help to mitigate the risk for storms to turn severe. Uncertainty still remains in rainfall totals, with the latest suite of guidance indicating 2.0"+ PWATs could stretch anywhere from DelMarVa to Portland, ME. The ECMWF is the most aggressive, bringing 2.0-2.15" PWATs along the entirety of the I-95 corridor, but the GFS and Canadian guidance keep that deep moisture further south across Long Island. The latest round of ensembles and AI ensembles continue to keep the worst PWATs off our southern waters; however, there is a noticeable northward trend from run-to-run.
Certainly something to keep an eye on as the day progresses.
KEY MESSAGE 3...Seasonable temperatures and lower humidity returns through the first half of next week before a return to a more active pattern late-week.
A cooler and much drier airmass then works into Southern New England Monday into Tuesday. Latest guidance shows 850 mb temps now dropping to around +8 to +10C, some 5-7C lower than we've been seeing. Highs are likely to drop into the low 80s, with dewpoints plummeting into the mid 40s to mid 50s, bringing about much more comfortable "feels like" temperatures. Temperatures will start to climb again heading into Wednesday, but are still seasonable in the low to mid 80s with still tolerable humidity levels.
More active weather looks to develop around Thursday or Thursday night, as a stronger disturbance aloft moves in and sweeps a cold front through Southern New England. This could bring a better shot at showers/storms, although it's still too early for specifics at this timeframe.
AVIATION /08Z SATURDAY THROUGH WEDNESDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
06Z TAF Update:
Through Sunday Morning: High confidence.
VFR through the period. NW winds around 8-12 kts, but shift to W around 5-10 kt after 22z. Not expecting any seabreezes today.
Winds shift SW late tonight/early Sunday morning.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Sunday Night through Wednesday/...
Sunday Night: Mainly VFR, with local MVFR possible. Breezy.
SHRA likely, chance TSRA.
Monday: VFR. Breezy.
Monday Night: VFR.
Tuesday: VFR. Breezy.
Tuesday Night: VFR.
Wednesday: VFR. Breezy. Slight chance SHRA.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through Sunday Morning...High confidence.
Seas generally 1-3 ft, except 3-4 ft across the far outer waters through Sunday morning. Otherwise, winds remain below SCA levels.
Outlook /Sunday Night through Wednesday/...
Sunday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of seas approaching 5 ft. Rain showers likely, chance of thunderstorms.
Monday: Winds less than 25 kt.
Monday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Tuesday: Winds less than 25 kt. Seas locally approaching 5 ft.
Tuesday Night: Winds less than 25 kt.
Wednesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...None.
Area Forecast Discussion National Weather Service Boston/Norton MA 407 AM EDT Sat Jun 13 2026
WHAT HAS CHANGED
No significant changes to the forecast.
KEY MESSAGES
- Mostly dry with above normal temperatures continuing through the weekend with humidity on the decrease.
- Expecting showers and thunderstorms Sunday night with the risk for severe weather remaining low.
- Seasonable temperatures and lower humidity returns through the first half of next week before a return to a more active pattern late-week.
DISCUSSION
KEY MESSAGE 1... Mostly dry with above normal temperatures continuing through the weekend with humidity on the decrease.
Temperatures remain in the upper 80s to low 90s through the weekend as an unseasonably warm airmass remains draped over New England. However, there will be a noticeable difference in the "feels like" temperatures compared to the last few days as dewpoints drop to the mid to upper 50s in the wake of a cold front pushing offshore this morning. With a ridging pattern moving into place aloft, expecting conditions to remain dry through most of Sunday.
KEY MESSAGE 2...Expecting showers and thunderstorms Sunday night with the risk for severe weather remaining low.
A cold front pushing into Southern New England Sunday night will increase the risk for showers and thunderstorms.
Instability likely remains low heading into the overnight hours, despite elevated shear magnitudes, which will help to mitigate the risk for storms to turn severe. Uncertainty still remains in rainfall totals, with the latest suite of guidance indicating 2.0"+ PWATs could stretch anywhere from DelMarVa to Portland, ME. The ECMWF is the most aggressive, bringing 2.0-2.15" PWATs along the entirety of the I-95 corridor, but the GFS and Canadian guidance keep that deep moisture further south across Long Island. The latest round of ensembles and AI ensembles continue to keep the worst PWATs off our southern waters; however, there is a noticeable northward trend from run-to-run.
Certainly something to keep an eye on as the day progresses.
KEY MESSAGE 3...Seasonable temperatures and lower humidity returns through the first half of next week before a return to a more active pattern late-week.
A cooler and much drier airmass then works into Southern New England Monday into Tuesday. Latest guidance shows 850 mb temps now dropping to around +8 to +10C, some 5-7C lower than we've been seeing. Highs are likely to drop into the low 80s, with dewpoints plummeting into the mid 40s to mid 50s, bringing about much more comfortable "feels like" temperatures. Temperatures will start to climb again heading into Wednesday, but are still seasonable in the low to mid 80s with still tolerable humidity levels.
More active weather looks to develop around Thursday or Thursday night, as a stronger disturbance aloft moves in and sweeps a cold front through Southern New England. This could bring a better shot at showers/storms, although it's still too early for specifics at this timeframe.
AVIATION /08Z SATURDAY THROUGH WEDNESDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
06Z TAF Update:
Through Sunday Morning: High confidence.
VFR through the period. NW winds around 8-12 kts, but shift to W around 5-10 kt after 22z. Not expecting any seabreezes today.
Winds shift SW late tonight/early Sunday morning.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Sunday Night through Wednesday/...
Sunday Night: Mainly VFR, with local MVFR possible. Breezy.
SHRA likely, chance TSRA.
Monday: VFR. Breezy.
Monday Night: VFR.
Tuesday: VFR. Breezy.
Tuesday Night: VFR.
Wednesday: VFR. Breezy. Slight chance SHRA.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through Sunday Morning...High confidence.
Seas generally 1-3 ft, except 3-4 ft across the far outer waters through Sunday morning. Otherwise, winds remain below SCA levels.
Outlook /Sunday Night through Wednesday/...
Sunday Night: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Areas of seas approaching 5 ft. Rain showers likely, chance of thunderstorms.
Monday: Winds less than 25 kt.
Monday Night: Winds less than 25 kt. Areas of seas approaching 5 ft.
Tuesday: Winds less than 25 kt. Seas locally approaching 5 ft.
Tuesday Night: Winds less than 25 kt.
Wednesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| 44090 | 11 mi | 71 min | 66°F | 61°F | 1 ft | |||
| 44020 - NANTUCKET SOUND | 19 mi | 41 min | WNW 7.8G | 70°F | 65°F | 29.72 | ||
| WAXM3 - Waquoit Bay Reserve, MA | 23 mi | 86 min | 0 | 70°F | 29.71 | 66°F | ||
| BZBM3 - 8447930 - Woods Hole, MA | 31 mi | 53 min | 29.75 | |||||
| NTKM3 - 8449130 - Nantucket Island, MA | 32 mi | 53 min | WNW 8G | 29.74 | ||||
| NBGM3 | 40 mi | 53 min | N 14G | 29.76 | ||||
| 44013 - BOSTON 16 NM East of Boston, MA | 49 mi | 41 min | WNW 9.7G | 67°F | 60°F | 29.75 | 60°F |
Wind History for Nantucket Island, MA
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KHYA Cape Cod Gateway Airport US | 8 sm | 14 min | NNW 10G19 | 10 sm | Clear | 75°F | 61°F | 61% | 29.72 | |
| KCQX Chatham Municipal Airport US | 10 sm | 18 min | NW 09G20 | 10 sm | Clear | 75°F | 61°F | 61% | 29.73 | |
| KFMH Cape Cod Coast Guard Air Station US | 20 sm | 14 min | NW 05 | 10 sm | Clear | 73°F | 64°F | 73% | 29.77 | |
| KPVC Provincetown Municipal Airport US | 22 sm | 14 min | NNW 06 | 10 sm | Clear | 66°F | 66°F | 100% | 29.75 |
Link to 5 hour of 5 minute data for KHYA
Terminal Aerodrome Forecast (TAF) for KHYA
Wind History Graph: HYA
(wind in knots)
GEOS Local Image of north east
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Boston, MA,
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