Marine Weather and Tide Forecast for Nantucket, MA
 | Sunrise 5:05 AM Sunset 8:16 PM Moonrise 3:13 AM Moonset 7:07 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
ANZ255 Coastal Waters Extending Out To 25 Nm South Of Marthas Vineyard And Nantucket- 404 Am Edt Sat Jun 13 2026
Today - NW winds 10 to 15 kt, becoming W 5 to 10 kt this afternoon. Seas 2 to 4 ft. Wave detail: sw 3 ft at 7 seconds and nw 2 ft at 4 seconds.
Tonight - W winds 10 to 15 kt. Seas 2 to 3 ft. Wave detail: sw 3 ft at 5 seconds and se 1 foot at 8 seconds.
Sun - SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Seas 2 to 3 ft. Wave detail: sw 3 ft at 4 seconds and sw 3 ft at 7 seconds.
Sun night - S winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 4 ft. Wave detail: se 4 ft at 7 seconds and W 3 ft at 4 seconds. A chance of showers in the evening, then showers likely with a chance of tstms after midnight.
Mon - SW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Seas 2 to 4 ft. Wave detail: sw 4 ft at 5 seconds and E 1 foot at 8 seconds. A chance of showers in the morning.
Mon night - W winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Wave detail: S 4 ft at 8 seconds and nw 2 ft at 3 seconds.
Tue through Wed night - S winds 10 to 15 kt. Seas 2 to 4 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 404 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 Nantucket, MA
NEW! Add second zone forecast
| Nantucket Click for Map Sat -- 03:13 AM EDT Moonrise Sat -- 04:45 AM EDT -0.34 feet Low Tide Sat -- 05:06 AM EDT Sunrise Sat -- 11:12 AM EDT 2.78 feet High Tide Sat -- 04:37 PM EDT 0.18 feet Low Tide Sat -- 07:07 PM EDT Moonset Sat -- 08:14 PM EDT Sunset Sat -- 11:21 PM EDT 4.23 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Nantucket, Nantucket Island, Massachusetts, Tide feet
| 12 am |
| 3.5 |
| 1 am |
| 2.6 |
| 2 am |
| 1.6 |
| 3 am |
| 0.6 |
| 4 am |
| -0.2 |
| 5 am |
| -0.3 |
| 6 am |
| 0.1 |
| 7 am |
| 0.7 |
| 8 am |
| 1.4 |
| 9 am |
| 2.1 |
| 10 am |
| 2.5 |
| 11 am |
| 2.8 |
| 12 pm |
| 2.7 |
| 1 pm |
| 2.2 |
| 2 pm |
| 1.5 |
| 3 pm |
| 0.8 |
| 4 pm |
| 0.3 |
| 5 pm |
| 0.2 |
| 6 pm |
| 0.7 |
| 7 pm |
| 1.6 |
| 8 pm |
| 2.4 |
| 9 pm |
| 3.3 |
| 10 pm |
| 3.9 |
| 11 pm |
| 4.2 |
| Nantucket Harbor entrance channel Click for Map Flood direction 171 true Ebb direction 350 true Sat -- 02:24 AM EDT -1.65 knots Max Ebb Sat -- 03:13 AM EDT Moonrise Sat -- 04:57 AM EDT 0.00 knots Slack Sat -- 05:06 AM EDT Sunrise Sat -- 06:53 AM EDT 1.24 knots Max Flood Sat -- 11:05 AM EDT -0.00 knots Slack Sat -- 02:57 PM EDT -1.53 knots Max Ebb Sat -- 05:27 PM EDT 0.00 knots Slack Sat -- 07:07 PM EDT Moonset Sat -- 07:13 PM EDT 1.10 knots Max Flood Sat -- 08:14 PM EDT Sunset Sat -- 11:15 PM EDT -0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
Nantucket Harbor entrance channel, Nantucket Sound, Massachusetts Current, knots
| 12 am |
| -1 |
| 1 am |
| -1.4 |
| 2 am |
| -1.6 |
| 3 am |
| -1.5 |
| 4 am |
| -0.9 |
| 5 am |
| 0 |
| 6 am |
| 0.9 |
| 7 am |
| 1.2 |
| 8 am |
| 1.2 |
| 9 am |
| 0.9 |
| 10 am |
| 0.5 |
| 11 am |
| 0.1 |
| 12 pm |
| -0.6 |
| 1 pm |
| -1.1 |
| 2 pm |
| -1.4 |
| 3 pm |
| -1.5 |
| 4 pm |
| -1.2 |
| 5 pm |
| -0.4 |
| 6 pm |
| 0.5 |
| 7 pm |
| 1.1 |
| 8 pm |
| 1.1 |
| 9 pm |
| 0.9 |
| 10 pm |
| 0.6 |
| 11 pm |
| 0.1 |
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 |
| NTKM3 - 8449130 - Nantucket Island, MA | 2 mi | 46 min | WNW 8.9G | 74°F | 67°F | 29.73 | ||
| 44020 - NANTUCKET SOUND | 20 mi | 36 min | W 5.8G | 69°F | 65°F | 29.72 | ||
| WAXM3 - Waquoit Bay Reserve, MA | 33 mi | 61 min | 0 | 70°F | 29.71 | 66°F | ||
| BZBM3 - 8447930 - Woods Hole, MA | 37 mi | 46 min | 71°F | 67°F | 29.75 | |||
| 44090 | 42 mi | 46 min | 66°F | 61°F | 1 ft |
Wind History for Nantucket Island, MA
toggle option: (graph/table)
Link to 5 hour of 5 minute data for KACK
Terminal Aerodrome Forecast (TAF) for KACK
Wind History Graph: ACK
(wind in knots)
GEOS Local Image of north east
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