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23NM W Nantucket MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:54 pm EST Dec 15, 2025
Forecast Valid: 8pm EST Dec 15, 2025-6pm EST Dec 22, 2025

Tonight

W wind 11 to 15 kt. Mostly cloudy. Seas 4 ft subsiding to 2 ft.

Tuesday

W wind 9 to 11 kt becoming WSW in the afternoon. Mostly sunny. Seas around 2 ft.

Tuesday Night

SW wind 11 to 14 kt increasing to 15 to 18 kt after midnight. Mostly cloudy. Seas 2 ft building to 4 ft.

Wednesday

SW wind 19 to 21 kt, with gusts as high as 28 kt. Mostly sunny. Seas 5 to 6 ft.

Wednesday Night

W wind 12 to 17 kt becoming WNW 6 to 9 kt after midnight. Mostly clear. Seas 6 ft subsiding to 4 ft.

Thursday

WNW wind 5 to 8 kt becoming S 10 to 13 kt in the morning. Mostly sunny. Seas around 3 ft.

Thursday Night

S wind 17 to 22 kt increasing to 26 to 31 kt. Winds could gust as high as 44 kt. Rain likely, mainly after 4am. Seas 4 ft building to 9 ft.

Friday

S wind 25 to 30 kt becoming WSW in the afternoon. Winds could gust as high as 45 kt. Rain. Seas 10 ft subsiding to 8 ft.

Friday Night

WNW wind 27 to 30 kt decreasing to 22 to 25 kt after midnight. Partly cloudy. Seas 8 ft subsiding to 5 ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.