Marine Weather and Tide Forecast for Winthrop Town, MA
 | Sunrise 5:14 AM Sunset 8:23 PM Moonrise 8:04 PM Moonset 3:31 AM |
Marine Forecasts
NOTE: Zones were updated 3/20/2025. If your report is out of date, please click Edit
ANZ230 Boston Harbor- 106 Am Edt Wed Jul 9 2025
Rest of tonight - NE winds around 5 kt. Waves 1 foot or less. Patchy fog. A chance of showers and tstms. Vsby 1 nm or less.
Wed - NE winds 5 to 10 kt. Waves 1 foot or less. Patchy fog in the morning. A chance of showers and tstms in the morning with vsby 1 nm or less.
Wed night - NE winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. A chance of showers after midnight. Vsby 1 to 3 nm.
Thu - E winds 5 to 10 kt. Waves 1 foot or less. Patchy fog. Showers likely. A chance of tstms in the afternoon.
Thu night - E winds 5 to 10 kt. Waves 1 foot or less. A chance of showers. A chance of tstms in the evening. Patchy fog in the evening with vsby 1 to 3 nm.
Fri and Fri night - NE winds 5 to 10 kt. Waves 1 foot or less.
Sat through Sun night - SW winds 10 to 15 kt. Waves around 2 ft.
winds and waves 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 waves 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 106 Am Edt Wed Jul 9 2025
Synopsis for massachusetts and rhode island coastal waters - A cold front slowly moves S across the waters tonight. Another low pres moves along this front Wed, stalling it over the srn coastal waters before it moves farther S Fri. High pres arrives this weekend.
7 Day Forecast for Marine Location Near Winthrop Town, MA
NEW! Add second zone forecast
| Belle Isle Inlet entrance Click for Map Tue -- 02:41 AM EDT Moonset Tue -- 04:35 AM EDT 1.02 feet Low Tide Tue -- 05:15 AM EDT Sunrise Tue -- 10:51 AM EDT 8.24 feet High Tide Tue -- 04:35 PM EDT 1.91 feet Low Tide Tue -- 07:11 PM EDT Moonrise Tue -- 08:22 PM EDT Sunset Tue -- 10:54 PM EDT 9.79 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Belle Isle Inlet entrance, Boston Harbor, Massachusetts, Tide feet
| 12 am |
| 8.1 |
| 1 am |
| 6.5 |
| 2 am |
| 4.5 |
| 3 am |
| 2.5 |
| 4 am |
| 1.2 |
| 5 am |
| 1.1 |
| 6 am |
| 1.8 |
| 7 am |
| 3.1 |
| 8 am |
| 4.8 |
| 9 am |
| 6.7 |
| 10 am |
| 7.9 |
| 11 am |
| 8.2 |
| 12 pm |
| 7.7 |
| 1 pm |
| 6.6 |
| 2 pm |
| 5 |
| 3 pm |
| 3.3 |
| 4 pm |
| 2.1 |
| 5 pm |
| 2 |
| 6 pm |
| 2.9 |
| 7 pm |
| 4.3 |
| 8 pm |
| 6.1 |
| 9 pm |
| 8 |
| 10 pm |
| 9.4 |
| 11 pm |
| 9.8 |
| Boston Harbor Click for Map Tue -- 02:03 AM EDT -1.14 knots Max Ebb Tue -- 02:41 AM EDT Moonset Tue -- 04:14 AM EDT 0.00 knots Slack Tue -- 05:15 AM EDT Sunrise Tue -- 07:32 AM EDT 0.91 knots Max Flood Tue -- 10:12 AM EDT -0.00 knots Slack Tue -- 02:26 PM EDT -0.94 knots Max Ebb Tue -- 04:24 PM EDT 0.00 knots Slack Tue -- 07:10 PM EDT Moonrise Tue -- 07:43 PM EDT 0.94 knots Max Flood Tue -- 08:22 PM EDT Sunset Tue -- 10:16 PM EDT -0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
Boston Harbor, Massachusetts Current, knots
| 12 am |
| -0.8 |
| 1 am |
| -1 |
| 2 am |
| -1.1 |
| 3 am |
| -0.9 |
| 4 am |
| -0.2 |
| 5 am |
| 0.5 |
| 6 am |
| 0.7 |
| 7 am |
| 0.9 |
| 8 am |
| 0.9 |
| 9 am |
| 0.5 |
| 10 am |
| 0.1 |
| 11 am |
| -0.3 |
| 12 pm |
| -0.5 |
| 1 pm |
| -0.7 |
| 2 pm |
| -0.9 |
| 3 pm |
| -0.9 |
| 4 pm |
| -0.3 |
| 5 pm |
| 0.4 |
| 6 pm |
| 0.8 |
| 7 pm |
| 0.9 |
| 8 pm |
| 0.9 |
| 9 pm |
| 0.7 |
| 10 pm |
| 0.1 |
| 11 pm |
| -0.3 |
FXUS61 KBOX 090520 AFDBOX
Area Forecast Discussion National Weather Service Boston/Norton MA 120 AM EDT Wed Jul 9 2025
SYNOPSIS
This afternoon and evening brings scattered thunderstorms capable of producing damaging winds and flash flooding. Cooler weather expected Wednesday and beyond. Possible break from unsettled weather for the upcoming weekend.
NEAR TERM /UNTIL 6 AM THIS MORNING/
Key Messages...
* Strong to severe storms possible with heavy downpours and potential for flash flooding.
Already seeing several storms pop along the NY/CT state line as well as along the south coast sea breeze boundary. Expecting storms to continue to pop up through the afternoon and continue into the overnight period... though the area of greatest concern generally along and south of the MA Pike, some storms could form along the north coast. Orientation looks to generally be SW to NE, in line with nearly unidirectional SW flow in the low/mid levels suggesting potential for slow moving and training storms. With warm cloud depths near 14,000 ft suggesting efficient warm rain processes, storms that form will have the potential to drop an 1-2 inches of rain in an hour and cause localized flash flooding issues, especially in urban areas. A Flood Watch continues for the area thought to stand the greatest risk from mid afternoon through the first half of the overnight hours.
SHORT TERM /6 AM THIS MORNING THROUGH 6 PM THURSDAY/
Key Messages...
* Isolated showers and thunderstorms possible but not a washout.
* Much cooler with highs in the 70s along the east coast and 80s elsewhere.
Cooler temperatures move in once the winds flip to easterly onshore flow. As such, the eastern coast of SNE should top out in the 70s while the hottest spot will be western/central MA, especially the CT valley where highs reach the mid 80s. Plenty of moisture sticking around with PWATs still 1.5+ inches, but a weakly forced environment so any showers will be scattered and difficult to nail down where exactly they'll materialize.
LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/
Key Messages...
* Periodic chances for showers through Friday before a break in the unsettled weather this weekend.
* Near to below average temperatures.
It is expected to remain quite humid through this weekend. Just thinking a brief cooldown Thursday, then the heat starts to build again into early next week.
Not much change to the overall synoptic pattern into Friday.
Still a risk for some showers and thunderstorms Thursday, and less of a risk Friday. It's likely Saturday is the day which features the lowest chance for showers. Even Sunday should be dry most of the time, with the risk for some showers and thunderstorms late in the day. Have low confidence in the forecast details early next week. Too much uncertainty with the timing of potential showers and thunderstorms.
AVIATION /05Z WEDNESDAY THROUGH SUNDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
06Z update...Overall Moderate Confidence.
Through 12z...Moderate confidence.
Ongoing TSRA is expected to wind down across eastern MA and RI between 06z-08z, few areas of -SHRA could linger towards 12z.
IFR ceilings spread from east to west as well, though do not think these ceilings go any further west than KORH. Wind shifts to the ENE 5 to 10 knots.
Today...Moderate confidence.
IFR cigs continue through most of the day from ORH east, MVFR/VFR west of ORH. NE winds 5-10 kts. Iso TSRA this afternoon across interior southern New England between 18z-00z.
Tonight...Moderate confidence.
MVFR to IFR conditions, slight chance for -SHRA. Light NE winds.
Thursday...Moderate confidence.
MVFR to IFR conditions. Hit and miss -SHRA and TSRA. E to ENE wind 5 to 10 knots.
KBOS Terminal...Moderate confidence in TAF.
Moderate confidence in LIFR conditions.
KBDL Terminal...Moderate confidence in TAF.
Outlook /Thursday Night through Sunday/...
Wednesday: Mainly VFR, with local IFR possible. Chance SHRA, slight chance TSRA.
Wednesday Night: Mainly VFR, with areas IFR possible. Chance SHRA, slight chance TSRA.
Thursday: MVFR/IFR conditions possible. Chance SHRA, slight chance TSRA.
Thursday Night: Mainly VFR, with areas IFR possible. Chance SHRA, slight chance TSRA.
Friday: Mainly VFR, with local IFR possible. Slight chance SHRA, slight chance TSRA.
Friday Night: Mainly VFR, with local MVFR possible.
Saturday: VFR.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Today and tonight: High confidence.
SW winds 15-20 kts with seas 2-4 ft on the eastern waters, 3-6 ft on the southern waters. Showers and thunderstorms expected late evening through the overnight hours.
Wednesday: High confidence.
Winds 5-10 kts out of the SW on the southern waters and out of the NE on the eastern waters. Seas 2-4 ft.
Outlook /Thursday Night through Sunday/...
Wednesday: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers, slight chance of thunderstorms, patchy fog.
Wednesday Night: Winds less than 25 kt. Chance of rain showers, slight chance of thunderstorms.
Thursday through Thursday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers, slight chance of thunderstorms.
Friday: Winds less than 25 kt. Seas locally approaching 5 ft.
Slight chance of rain showers, slight chance of thunderstorms.
Friday Night through Saturday: Winds less than 25 kt. Seas locally approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...Flood Watch until 2 AM EDT early this morning for CTZ002>004.
MA...Flood Watch until 2 AM EDT early this morning for MAZ011>013- 015>022.
RI...Flood Watch until 2 AM EDT early this morning for RIZ001>007.
MARINE...Small Craft Advisory until 8 AM EDT this morning for ANZ254>256.
Area Forecast Discussion National Weather Service Boston/Norton MA 120 AM EDT Wed Jul 9 2025
SYNOPSIS
This afternoon and evening brings scattered thunderstorms capable of producing damaging winds and flash flooding. Cooler weather expected Wednesday and beyond. Possible break from unsettled weather for the upcoming weekend.
NEAR TERM /UNTIL 6 AM THIS MORNING/
Key Messages...
* Strong to severe storms possible with heavy downpours and potential for flash flooding.
Already seeing several storms pop along the NY/CT state line as well as along the south coast sea breeze boundary. Expecting storms to continue to pop up through the afternoon and continue into the overnight period... though the area of greatest concern generally along and south of the MA Pike, some storms could form along the north coast. Orientation looks to generally be SW to NE, in line with nearly unidirectional SW flow in the low/mid levels suggesting potential for slow moving and training storms. With warm cloud depths near 14,000 ft suggesting efficient warm rain processes, storms that form will have the potential to drop an 1-2 inches of rain in an hour and cause localized flash flooding issues, especially in urban areas. A Flood Watch continues for the area thought to stand the greatest risk from mid afternoon through the first half of the overnight hours.
SHORT TERM /6 AM THIS MORNING THROUGH 6 PM THURSDAY/
Key Messages...
* Isolated showers and thunderstorms possible but not a washout.
* Much cooler with highs in the 70s along the east coast and 80s elsewhere.
Cooler temperatures move in once the winds flip to easterly onshore flow. As such, the eastern coast of SNE should top out in the 70s while the hottest spot will be western/central MA, especially the CT valley where highs reach the mid 80s. Plenty of moisture sticking around with PWATs still 1.5+ inches, but a weakly forced environment so any showers will be scattered and difficult to nail down where exactly they'll materialize.
LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/
Key Messages...
* Periodic chances for showers through Friday before a break in the unsettled weather this weekend.
* Near to below average temperatures.
It is expected to remain quite humid through this weekend. Just thinking a brief cooldown Thursday, then the heat starts to build again into early next week.
Not much change to the overall synoptic pattern into Friday.
Still a risk for some showers and thunderstorms Thursday, and less of a risk Friday. It's likely Saturday is the day which features the lowest chance for showers. Even Sunday should be dry most of the time, with the risk for some showers and thunderstorms late in the day. Have low confidence in the forecast details early next week. Too much uncertainty with the timing of potential showers and thunderstorms.
AVIATION /05Z WEDNESDAY THROUGH SUNDAY/
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
06Z update...Overall Moderate Confidence.
Through 12z...Moderate confidence.
Ongoing TSRA is expected to wind down across eastern MA and RI between 06z-08z, few areas of -SHRA could linger towards 12z.
IFR ceilings spread from east to west as well, though do not think these ceilings go any further west than KORH. Wind shifts to the ENE 5 to 10 knots.
Today...Moderate confidence.
IFR cigs continue through most of the day from ORH east, MVFR/VFR west of ORH. NE winds 5-10 kts. Iso TSRA this afternoon across interior southern New England between 18z-00z.
Tonight...Moderate confidence.
MVFR to IFR conditions, slight chance for -SHRA. Light NE winds.
Thursday...Moderate confidence.
MVFR to IFR conditions. Hit and miss -SHRA and TSRA. E to ENE wind 5 to 10 knots.
KBOS Terminal...Moderate confidence in TAF.
Moderate confidence in LIFR conditions.
KBDL Terminal...Moderate confidence in TAF.
Outlook /Thursday Night through Sunday/...
Wednesday: Mainly VFR, with local IFR possible. Chance SHRA, slight chance TSRA.
Wednesday Night: Mainly VFR, with areas IFR possible. Chance SHRA, slight chance TSRA.
Thursday: MVFR/IFR conditions possible. Chance SHRA, slight chance TSRA.
Thursday Night: Mainly VFR, with areas IFR possible. Chance SHRA, slight chance TSRA.
Friday: Mainly VFR, with local IFR possible. Slight chance SHRA, slight chance TSRA.
Friday Night: Mainly VFR, with local MVFR possible.
Saturday: VFR.
MARINE
Forecaster Confidence Levels...
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Today and tonight: High confidence.
SW winds 15-20 kts with seas 2-4 ft on the eastern waters, 3-6 ft on the southern waters. Showers and thunderstorms expected late evening through the overnight hours.
Wednesday: High confidence.
Winds 5-10 kts out of the SW on the southern waters and out of the NE on the eastern waters. Seas 2-4 ft.
Outlook /Thursday Night through Sunday/...
Wednesday: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers, slight chance of thunderstorms, patchy fog.
Wednesday Night: Winds less than 25 kt. Chance of rain showers, slight chance of thunderstorms.
Thursday through Thursday Night: Winds less than 25 kt. Seas locally approaching 5 ft. Chance of rain showers, slight chance of thunderstorms.
Friday: Winds less than 25 kt. Seas locally approaching 5 ft.
Slight chance of rain showers, slight chance of thunderstorms.
Friday Night through Saturday: Winds less than 25 kt. Seas locally approaching 5 ft.
BOX WATCHES/WARNINGS/ADVISORIES
CT...Flood Watch until 2 AM EDT early this morning for CTZ002>004.
MA...Flood Watch until 2 AM EDT early this morning for MAZ011>013- 015>022.
RI...Flood Watch until 2 AM EDT early this morning for RIZ001>007.
MARINE...Small Craft Advisory until 8 AM EDT this morning for ANZ254>256.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| BHBM3 - 8443970 - Boston, MA | 4 mi | 54 min | 69°F | 30.00 | ||||
| 44013 - BOSTON 16 NM East of Boston, MA | 18 mi | 42 min | NNE 7.8G | 68°F | 68°F | 29.99 | 68°F | |
| 44029 - Buoy A0102 - Mass. Bay/Stellwagen | 24 mi | 72 min | NE 7.8G | 65°F | ||||
| FOXR1 - 8454000 - Providence, RI | 45 mi | 54 min | N 12G | 73°F | 74°F | 29.99 | ||
| IOSN3 - Isle of Shoals, NH | 45 mi | 42 min | NNE 9.9G | 64°F | 29.99 | 64°F | ||
| PVDR1 | 46 mi | 54 min | NNW 4.1G | 73°F | 30.00 | |||
| BLTM3 - 8447387 - Borden Flats Light at Fall River, MA | 47 mi | 54 min | NNE 6G | 75°F | 30.01 | |||
| FRVM3 - 8447386 - Fall River, MA | 47 mi | 54 min | 75°F | 78°F | 30.01 | |||
| BGXN3 - Great Bay Reserve, NH | 48 mi | 117 min | E 1.9 | 67°F | 66°F | |||
| FRXM3 | 48 mi | 54 min | 75°F | 74°F | ||||
| CPTR1 - 8452944 - Conimicut Light, RI | 49 mi | 54 min | N 8.9G | 73°F | 78°F | 30.00 |
Wind History for Providence, RI
toggle option: (graph/table)
| Airport | Dist | Age | Wind kt | Vis | Sky | Weather | Air | DewPt | RH | inHg |
| KBOS GENERAL EDWARD LAWRENCE LOGAN INTL,MA | 2 sm | 33 min | ENE 05 | 3/4 sm | Overcast | Thunderstorm Mist | 68°F | 66°F | 94% | 30.01 |
| KBVY BEVERLY RGNL,MA | 15 sm | 38 min | N 03 | 3/4 sm | Overcast | Mist | 66°F | 66°F | 100% | 30.00 |
| KOWD NORWOOD MEMORIAL,MA | 16 sm | 22 min | NNE 05 | 1/2 sm | Mostly Cloudy | Thunderstorm Lt Rain Mist | 72°F | 68°F | 88% | 30.01 |
| KBED LAURENCE G HANSCOM FLD,MA | 18 sm | 50 min | no data | -- |
Link to 1 hour of 5 minute data for KBOS
Terminal Aerodrome Forecast (TAF) for KBOS
Wind History Graph: BOS
(wind in knots)
GEOS Local Image of north east
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