Marine forecast
Ocean: Marthas Vineyard–Nantucket (25-60 nm)
- current wind
- 10 kt SE
- Gusts
- 16 kt
- Seas
- 3.6 ft
- Period
- 9 sec
- Air
- 62°F
Observed Tue 3:00 PM | ANZ282
- Gusts now
- 16 kt
- Seas now
- 3.6 ft · 9 sec
- Air
- 62°F
- Water
- 61°F
- 72-hr peak
- 26 kt
In brief
At 3:00 pm EDT on Oct 13, 2026, NDBC station NTKM3 (Nantucket Island, MA, 34 miles away) measured wind from the SE at 10 kt, gusting to 16 kt; buoy 44097 measured seas of 3.6 ft. The NWS forecast for Ocean: Marthas Vineyard–Nantucket (25-60 nm), MA issued at 1:04 pm EDT on Oct 13, 2026 reads, for this afternoon: “SE winds 10 to 15 kt. Seas 4 to 5 ft.”
Source: National Weather Service Boston/Norton MA forecast; NDBC observations
Wind forecast · ktPeak 26 kt
Seas forecast · ftPeak 7 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| This Afternoon | SE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft at 7 seconds and S 4 ft at 8 seconds. |
| Tonight | S winds 10 to 15 kt, becoming SW 15 to 20 kt after midnight. Gusts up to 25 kt. Seas 4 to 5 ft, building to 5 to 7 ft after midnight. Wave Detail: NE 4 ft at 7 seconds and S 3 ft at 4 seconds, becoming SW 5 ft at 6 seconds and NE 4 ft at 7 seconds. |
| Wed | SW winds 20 to 25 kt, diminishing to 15 to 20 kt in the afternoon. Seas 6 to 8 ft. Wave Detail: SW 6 ft at 7 seconds and NE 4 ft at 8 seconds. |
| Wed Night | W winds around 15 kt, becoming NW after midnight. Gusts up to 20 kt. Seas 5 to 7 ft, subsiding to 4 to 5 ft after midnight. Wave Detail: SW 6 ft at 7 seconds and E 3 ft at 8 seconds, becoming W 5 ft at 7 seconds and E 2 ft at 8 seconds. |
| Thu | N winds 15 to 20 kt with gusts up to 25 kt. Seas 4 to 5 ft. Wave Detail: NW 5 ft at 5 seconds and NE 4 ft at 8 seconds. |
| Thu Night | NE winds 10 to 15 kt, becoming E 5 to 10 kt after midnight. Seas 3 to 4 ft. Wave Detail: NE 4 ft at 7 seconds and SW 2 ft at 5 seconds. |
| Fri | S winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft. Showers. |
| Fri Night | W winds 25 to 35 kt with gusts up to 40 kt. Seas 9 to 12 ft. Showers. |
| Sat | NW winds 30 to 35 kt with gusts up to 40 kt. Seas 11 to 14 ft. A chance of showers. |
| Sat Night | NW winds 25 to 35 kt with gusts up to 40 kt. Seas 9 to 13 ft. 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. |
Issued Tue 1:04 PM by Boston/Norton MA (product CWFBOX).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 3:00 PM | 10 kt SE | 16 kt | — | 61°F |
| Tue 2:54 PM | 9 kt SE | 15 kt | — | 61°F |
| Tue 1:54 PM | 12 kt SE | 15 kt | — | 61°F |
| Tue 12:54 PM | 8 kt SE | 14 kt | — | 61°F |
| Tue 11:54 AM | 6 kt ESE | 12 kt | — | 61°F |
| Tue 10:54 AM | 7 kt ESE | 12 kt | — | 61°F |
| Tue 9:54 AM | 12 kt E | 14 kt | — | 61°F |
| Tue 8:54 AM | 7 kt ENE | 13 kt | — | 60°F |
| Tue 7:54 AM | 9 kt ENE | 12 kt | — | 61°F |
| Tue 6:54 AM | 11 kt ENE | 15 kt | — | 61°F |
| Tue 5:54 AM | 7 kt ENE | 13 kt | — | 61°F |
| Tue 4:54 AM | 8 kt ENE | 11 kt | — | 61°F |
Observed Tue 3:00 PM at NDBC buoy NTKM3 (Nantucket Island, MA), 34.0 miles away. Seas from buoy 44097 (Block Island, RI (154)), 66.1 miles away, at Tue 3:00 PM.
Frequently asked questions
What is the marine forecast for Ocean: Marthas Vineyard–Nantucket (25-60 nm) today?
This Afternoon: SE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft at 7 seconds and S 4 ft at 8 seconds.
Is there a small craft advisory for Ocean: Marthas Vineyard–Nantucket (25-60 nm)?
No advisories, warnings or watches are in effect for NWS zone ANZ282 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.
How high are the waves at Ocean: Marthas Vineyard–Nantucket (25-60 nm) right now?
Seas are running 3.6 ft at a 9-second period, measured at NDBC buoy NTKM3 Tue 3:00 PM, 34.0 miles from this zone. The forecast peaks at 7.0 ft Wed 8 AM.
What is the water temperature at Ocean: Marthas Vineyard–Nantucket (25-60 nm)?
The nearest buoy read 61°F (16°C) at Tue 3:00 PM. Sea surface temperature at a single buoy can differ by several degrees from the water at a beach or in a shallow bay nearby.
What do the wind speeds in knots mean?
One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.
Where does this forecast come from?
The forecast text is the National Weather Service's own marine bulletin for zone ANZ282, issued by Boston/Norton MA, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.
Forecast: NOAA/NWS product CWFBOX, issued Tue 1:04 PM. Observations: NOAA National Data Buoy Center station NTKM3, read Tue 3:00 PM. Retrieved Oct 13, 3:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.