Marine Weather and Tide Forecast for Yarmouth Port, MA
 | Sunrise 7:12 AM Sunset 5:37 PM Moonrise 3:29 PM Moonset 2:16 AM |
Marine Forecasts
NOTE: Zones were updated 3/20/2025. If your report is out of date, please click Edit
ANZ231 Cape Cod Bay- 403 Pm Edt Sat Nov 1 2025
.small craft advisory in effect until 1 am edt Sunday - .
Tonight - W winds 15 to 20 kt, becoming nw 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. Wave detail: nw 4 ft at 5 seconds and E 2 ft at 11 seconds.
Sun - NW winds 10 to 15 kt. Seas 2 to 3 ft. Wave detail: nw 2 ft at 5 seconds and E 1 foot at 10 seconds.
Sun night - W winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave detail: nw 2 ft at 5 seconds and E 1 foot at 9 seconds, becoming N 1 foot at 5 seconds.
Mon - 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 2 ft at 3 seconds and ne 1 foot at 6 seconds. A chance of rain in the afternoon.
Mon night - SW winds around 15 kt, becoming W after midnight. Gusts up to 25 kt. Seas around 3 ft. Wave detail: sw 2 ft at 3 seconds and se 1 foot at 9 seconds. Rain likely, mainly in the evening.
Tue and Tue night - W winds 15 to 20 kt with gusts up to 25 kt. Seas 2 to 3 ft. Wave detail: nw 3 ft at 4 seconds and se 1 foot at 10 seconds.
Wed - W winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
Wed night through Thu night - NW winds 20 to 25 kt with gusts up to 30 kt. Seas 2 to 4 ft. A chance of rain.
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 403 Pm Edt Sat Nov 1 2025
Synopsis for massachusetts and rhode island coastal waters - High pres will build over the waters Sun, then move offshore Mon as a cold front approaches from the nw. High pres over the tn valley will build into the region Tue and Wed.
7 Day Forecast for Marine Location Near Yarmouth Port, MA
NEW! Add second zone forecast
| Barnstable Harbor Click for Map Sat -- 02:16 AM EDT Moonset Sat -- 02:18 AM EDT 0.85 feet Low Tide Sat -- 07:13 AM EDT Sunrise Sat -- 08:16 AM EDT 9.30 feet High Tide Sat -- 02:42 PM EDT 1.12 feet Low Tide Sat -- 03:29 PM EDT Moonrise Sat -- 05:35 PM EDT Sunset Sat -- 08:34 PM EDT 9.73 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Barnstable Harbor, Beach Point, Massachusetts, Tide feet
| 12 am |
| 3.4 |
| 1 am |
| 1.8 |
| 2 am |
| 0.9 |
| 3 am |
| 1.2 |
| 4 am |
| 2.6 |
| 5 am |
| 4.5 |
| 6 am |
| 6.5 |
| 7 am |
| 8.3 |
| 8 am |
| 9.3 |
| 9 am |
| 9 |
| 10 am |
| 8 |
| 11 am |
| 6.3 |
| 12 pm |
| 4.5 |
| 1 pm |
| 2.7 |
| 2 pm |
| 1.4 |
| 3 pm |
| 1.2 |
| 4 pm |
| 2.3 |
| 5 pm |
| 4.1 |
| 6 pm |
| 6.1 |
| 7 pm |
| 8.2 |
| 8 pm |
| 9.5 |
| 9 pm |
| 9.6 |
| 10 pm |
| 8.7 |
| 11 pm |
| 7.1 |
| Cape Cod Canal Click for Map Sat -- 02:17 AM EDT Moonset Sat -- 03:09 AM EDT 3.84 knots Max Flood Sat -- 06:42 AM EDT -0.03 knots Slack Sat -- 07:15 AM EDT Sunrise Sat -- 09:28 AM EDT -3.89 knots Max Ebb Sat -- 12:32 PM EDT 0.17 knots Slack Sat -- 03:30 PM EDT Moonrise Sat -- 03:30 PM EDT 3.66 knots Max Flood Sat -- 05:36 PM EDT Sunset Sat -- 06:48 PM EDT -0.14 knots Slack Sat -- 09:48 PM EDT -4.20 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
Cape Cod Canal, Massachusetts Current, knots
| 12 am |
| 0.4 |
| 1 am |
| 2.7 |
| 2 am |
| 3.5 |
| 3 am |
| 3.8 |
| 4 am |
| 3.7 |
| 5 am |
| 3.2 |
| 6 am |
| 2.2 |
| 7 am |
| -1.5 |
| 8 am |
| -3.1 |
| 9 am |
| -3.8 |
| 10 am |
| -3.8 |
| 11 am |
| -3.2 |
| 12 pm |
| -2 |
| 1 pm |
| 1.8 |
| 2 pm |
| 3.1 |
| 3 pm |
| 3.6 |
| 4 pm |
| 3.6 |
| 5 pm |
| 3.2 |
| 6 pm |
| 2.3 |
| 7 pm |
| -1.2 |
| 8 pm |
| -3.1 |
| 9 pm |
| -4 |
| 10 pm |
| -4.2 |
| 11 pm |
| -3.8 |
FXUS61 KBOX 011816 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 216 PM EDT Sat Nov 1 2025
SYNOPSIS
Decreasing wind into this evening, turning chilly with mainly clear skies. Dry conditions with a light breeze continues on Sunday as high pressure building into the region. Slightly warmer temperatures for Monday. A few weak, quick moving systems move through the region Monday night-Tuesday and late Wednesday-Thursday bringing a chance for showers.
NEAR TERM /THROUGH TONIGHT/
Key Messages:
* Breezy, gusts subside late afternoon into the early evening.
* Turning chilly overnight with clear skies and light winds.
Breezy and seasonably cool for this first day of November. A strong area of high pressure is located in the vicinity of the entrance to the Saint Lawrence River and high pressure building across the southeast CONUS. With high pressure building north, will continue to have clear skies. The gusty cyclonic flow across the northeastern CONUS brought on a couple of lake effect streamers and clouds to the most western areas of southern New England. While it's largely a dry day, cannot rule out a spot shower or sprinkle there.
Breezy conditions through this afternoon, diminishing by midnight as the pressure gradient force slackens. Areas where the gusts remain are coastal locations due to the large temperature gradient between the "warmer" sea surface and colder temperatures aloft. 500mb temps are roughly -20C! Otherwise, light wind and clear skies overnight should result in effective radiational cooling. Tonight's temps fall into the low 30s and upper 20s, closer to the coast temps are a tad warmer in the upper 30s to 40F.
Lastly, remember to set your clocks back one hour before heading to bed as daylight saving time ends and standard time begins. Today is the final 5pm sunset until February 3rd (5:01pm). Tomorrow's sunset ranges from 4:35pm at Boston to 4:43pm at Hartford.
SHORT TERM /SUNDAY THROUGH SUNDAY NIGHT/
Key Messages:
* Dry, less breezy, and seasonably cool.
Sunday: Quiet conditions, surface high pressure expands northward into southern New England. Because of this, the wind aloft over the eastern Great Lakes becomes southwesterly and this will end the lake effect clouds and showers coming into the western area of southern New England. Though, the winds aloft over our region remains out of the west-northwest. This should keep PWATs low and result in a mostly sunny day. 925mb winds 20-30 knots during the early morning, perhaps a few gusts at the surface to 20-25 mph before noon, then less than 20mph during the afternoon. 925mb temps are 0C to +2C should have daytime highs in the lower to middle 50s.
Sunday Night: Surface high pressure center moves south of New England overnight with winds becoming light from the west-southwest.
This will bring in slightly higher PWATs and some added cloud cover expanding from south to north. Temps overnight between the lower and middle 30s with upper 20s across the higher terrain of northern Massachusetts. Near the coast upper 30s to 40F.
LONG TERM /MONDAY THROUGH FRIDAY/
Key Messages:
* Relatively dry through next week, except chances for showers with cold fronts late Mon-Tue & late Wed-Thu.
* Generally seasonable temperatures expected with periods of gustier winds with the frontal passages.
High pressure moves offshore Monday, but the day should remain mostly dry with afternoon temperatures near 60. A cold front associated with a Canadian low pressure system then begins to sweep through New England Monday evening into Tuesday morning, bringing with it some chances for a few showers and gustier winds across southern New England.
Another weak high pressure system is expected to move through quickly on Wednesday, allowing for some drying out throughout the daytime hours. However, another low appears likely to move through southern New England by Wednesday evening into Thursday, bringing more chances for showers.
Rest of next week and the start of the weekend looks relatively calm with another high pressure system set to build to our west. Dry weather should prevail with relatively seasonal temperatures in the low to mid 50s.
AVIATION /18Z SATURDAY THROUGH THURSDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today... High confidence.
VFR. Few batches of SCT-BKN decks 3500-5000 ft develop toward the afternoon. Gusty W/WNW winds of 20 to 30 knots and up to 35 knots across parts of the Cape and Islands. Winds slowly trend downward late afternoon.
Tonight... High confidence.
VFR. Gusty diminish between 02z-06z, exceptions are the islands, where gusts remain elevated overnight between 20 and 25 knots.
Otherwise, W/WNW winds less than 10 knots.
Sunday... High confidence.
VFR. WNW wind 8 to 12 knots, isolated gusts of 20 knots are possible after sunrise through noon, though shouldn't be frequent.
Sunday Night... High confidence.
VFR. WNW wind becomes light and from the WSW/SW.
KBOS Terminal... High confidence.
KBDL Terminal... High confidence.
Outlook /Monday through Wednesday/...
Sunday Night: VFR.
Monday: Mainly VFR, with areas MVFR possible. Breezy. Chance RA.
Monday Night: Mainly MVFR, with areas VFR possible. Breezy. RA likely.
Tuesday: Mainly VFR, with local MVFR possible. Windy with local gusts up to 30 kt.
Tuesday Night: VFR. Breezy.
Wednesday: Mainly VFR, with local MVFR possible. Breezy.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Saturday through Sunday Night... High confidence.
Wind gust continue to diminish this afternoon and through the night as an area of low pressure at the mouth of the Saint Lawrence River moves further north and east. The remaining Gale Warnings have been downgraded to Small Craft Advisories through this evening, roughly midnight for the near shore waters. Off shore waters will remain under a Small Craft Advisory until tomorrow morning due to rough seas.
Sunday and Sunday night feature less unsettled weather with high pressure building in from the south. During the day, WNW gusts are below 25 knots and seas are 3 to 4 feet. Sunday night gusts subside to less than 15 knots and seas 2 to 3 feet.
Outlook /Monday through Wednesday/...
Sunday Night: Winds less than 25 kt.
Monday: Winds less than 25 kt. Chance of rain.
Monday Night: Low risk for Small Craft Advisory winds with local gusts up to 30 kt. Areas of seas approaching 5 ft. Rain likely.
Tuesday: Strong winds with gusts up to 30 kt. Areas of rough seas. Slight chance of rain.
Tuesday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas.
Wednesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ230- 236-251.
Small Craft Advisory until 1 AM EDT Sunday for ANZ231>235-237.
Small Craft Advisory until 7 AM EDT Sunday for ANZ250-254>256.
Area Forecast Discussion National Weather Service Boston/Norton MA 216 PM EDT Sat Nov 1 2025
SYNOPSIS
Decreasing wind into this evening, turning chilly with mainly clear skies. Dry conditions with a light breeze continues on Sunday as high pressure building into the region. Slightly warmer temperatures for Monday. A few weak, quick moving systems move through the region Monday night-Tuesday and late Wednesday-Thursday bringing a chance for showers.
NEAR TERM /THROUGH TONIGHT/
Key Messages:
* Breezy, gusts subside late afternoon into the early evening.
* Turning chilly overnight with clear skies and light winds.
Breezy and seasonably cool for this first day of November. A strong area of high pressure is located in the vicinity of the entrance to the Saint Lawrence River and high pressure building across the southeast CONUS. With high pressure building north, will continue to have clear skies. The gusty cyclonic flow across the northeastern CONUS brought on a couple of lake effect streamers and clouds to the most western areas of southern New England. While it's largely a dry day, cannot rule out a spot shower or sprinkle there.
Breezy conditions through this afternoon, diminishing by midnight as the pressure gradient force slackens. Areas where the gusts remain are coastal locations due to the large temperature gradient between the "warmer" sea surface and colder temperatures aloft. 500mb temps are roughly -20C! Otherwise, light wind and clear skies overnight should result in effective radiational cooling. Tonight's temps fall into the low 30s and upper 20s, closer to the coast temps are a tad warmer in the upper 30s to 40F.
Lastly, remember to set your clocks back one hour before heading to bed as daylight saving time ends and standard time begins. Today is the final 5pm sunset until February 3rd (5:01pm). Tomorrow's sunset ranges from 4:35pm at Boston to 4:43pm at Hartford.
SHORT TERM /SUNDAY THROUGH SUNDAY NIGHT/
Key Messages:
* Dry, less breezy, and seasonably cool.
Sunday: Quiet conditions, surface high pressure expands northward into southern New England. Because of this, the wind aloft over the eastern Great Lakes becomes southwesterly and this will end the lake effect clouds and showers coming into the western area of southern New England. Though, the winds aloft over our region remains out of the west-northwest. This should keep PWATs low and result in a mostly sunny day. 925mb winds 20-30 knots during the early morning, perhaps a few gusts at the surface to 20-25 mph before noon, then less than 20mph during the afternoon. 925mb temps are 0C to +2C should have daytime highs in the lower to middle 50s.
Sunday Night: Surface high pressure center moves south of New England overnight with winds becoming light from the west-southwest.
This will bring in slightly higher PWATs and some added cloud cover expanding from south to north. Temps overnight between the lower and middle 30s with upper 20s across the higher terrain of northern Massachusetts. Near the coast upper 30s to 40F.
LONG TERM /MONDAY THROUGH FRIDAY/
Key Messages:
* Relatively dry through next week, except chances for showers with cold fronts late Mon-Tue & late Wed-Thu.
* Generally seasonable temperatures expected with periods of gustier winds with the frontal passages.
High pressure moves offshore Monday, but the day should remain mostly dry with afternoon temperatures near 60. A cold front associated with a Canadian low pressure system then begins to sweep through New England Monday evening into Tuesday morning, bringing with it some chances for a few showers and gustier winds across southern New England.
Another weak high pressure system is expected to move through quickly on Wednesday, allowing for some drying out throughout the daytime hours. However, another low appears likely to move through southern New England by Wednesday evening into Thursday, bringing more chances for showers.
Rest of next week and the start of the weekend looks relatively calm with another high pressure system set to build to our west. Dry weather should prevail with relatively seasonal temperatures in the low to mid 50s.
AVIATION /18Z SATURDAY THROUGH THURSDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today... High confidence.
VFR. Few batches of SCT-BKN decks 3500-5000 ft develop toward the afternoon. Gusty W/WNW winds of 20 to 30 knots and up to 35 knots across parts of the Cape and Islands. Winds slowly trend downward late afternoon.
Tonight... High confidence.
VFR. Gusty diminish between 02z-06z, exceptions are the islands, where gusts remain elevated overnight between 20 and 25 knots.
Otherwise, W/WNW winds less than 10 knots.
Sunday... High confidence.
VFR. WNW wind 8 to 12 knots, isolated gusts of 20 knots are possible after sunrise through noon, though shouldn't be frequent.
Sunday Night... High confidence.
VFR. WNW wind becomes light and from the WSW/SW.
KBOS Terminal... High confidence.
KBDL Terminal... High confidence.
Outlook /Monday through Wednesday/...
Sunday Night: VFR.
Monday: Mainly VFR, with areas MVFR possible. Breezy. Chance RA.
Monday Night: Mainly MVFR, with areas VFR possible. Breezy. RA likely.
Tuesday: Mainly VFR, with local MVFR possible. Windy with local gusts up to 30 kt.
Tuesday Night: VFR. Breezy.
Wednesday: Mainly VFR, with local MVFR possible. Breezy.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Saturday through Sunday Night... High confidence.
Wind gust continue to diminish this afternoon and through the night as an area of low pressure at the mouth of the Saint Lawrence River moves further north and east. The remaining Gale Warnings have been downgraded to Small Craft Advisories through this evening, roughly midnight for the near shore waters. Off shore waters will remain under a Small Craft Advisory until tomorrow morning due to rough seas.
Sunday and Sunday night feature less unsettled weather with high pressure building in from the south. During the day, WNW gusts are below 25 knots and seas are 3 to 4 feet. Sunday night gusts subside to less than 15 knots and seas 2 to 3 feet.
Outlook /Monday through Wednesday/...
Sunday Night: Winds less than 25 kt.
Monday: Winds less than 25 kt. Chance of rain.
Monday Night: Low risk for Small Craft Advisory winds with local gusts up to 30 kt. Areas of seas approaching 5 ft. Rain likely.
Tuesday: Strong winds with gusts up to 30 kt. Areas of rough seas. Slight chance of rain.
Tuesday Night: Moderate risk for Small Craft Advisory winds with gusts up to 30 kt. Areas of rough seas.
Wednesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ230- 236-251.
Small Craft Advisory until 1 AM EDT Sunday for ANZ231>235-237.
Small Craft Advisory until 7 AM EDT Sunday for ANZ250-254>256.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| 44090 | 9 mi | 42 min | 57°F | 56°F | 2 ft | |||
| 44020 - NANTUCKET SOUND | 15 mi | 42 min | WNW 18G | 57°F | 56°F | 29.81 | 43°F | |
| WAXM3 - Waquoit Bay Reserve, MA | 15 mi | 87 min | W 8 | 56°F | 29.80 | 34°F | ||
| CHTM3 | 18 mi | 72 min | 29.80 | |||||
| BZBM3 - 8447930 - Woods Hole, MA | 24 mi | 72 min | 58°F | 29.83 | ||||
| NTKM3 - 8449130 - Nantucket Island, MA | 31 mi | 72 min | W 8.9G | 54°F | 29.83 | |||
| NBGM3 | 33 mi | 72 min | NW 18G | 29.83 | ||||
| 44085 | 45 mi | 42 min | 58°F | 58°F | 6 ft | |||
| BUZM3 - Buzzards Bay, MA | 45 mi | 72 min | WNW 22G | 29.85 | ||||
| FRVM3 - 8447386 - Fall River, MA | 46 mi | 72 min | 57°F | 29.86 | ||||
| BLTM3 - 8447387 - Borden Flats Light at Fall River, MA | 47 mi | 72 min | W 16G | 29.85 | ||||
| FRXM3 | 47 mi | 102 min | 56°F | 37°F | ||||
| 44013 - BOSTON 16 NM East of Boston, MA | 48 mi | 42 min | W 18G | 55°F | 54°F | 29.83 | 39°F |
Wind History for Nantucket Island, MA
toggle option: (graph/table)
Link to 1 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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