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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:34 am EDT Mar 20, 2026
Forecast Valid: 5am EDT Mar 20, 2026-6pm EDT Mar 26, 2026

Today

SW wind 7 to 10 kt becoming SSW 11 to 14 kt in the afternoon. Winds could gust as high as 20 kt. Increasing clouds. Seas 2 to 3 ft.

Tonight

SSW wind 18 to 21 kt, with gusts as high as 30 kt. Showers. Seas 4 to 5 ft.

Saturday

WSW wind 11 to 14 kt becoming NNW in the afternoon. Winds could gust as high as 22 kt. A chance of showers before 8am. Seas 3 to 4 ft.

Saturday Night

NNW wind around 9 kt becoming NNE after midnight. Mostly cloudy. Seas around 3 ft.

Sunday

S wind 9 to 13 kt. A chance of rain, mainly after 2pm. Seas 2 to 3 ft.

Sunday Night

SSW wind 12 to 15 kt becoming N after midnight. Rain likely, mainly after 11pm. Seas 2 to 3 ft.

Monday

N wind 17 to 19 kt. A chance of rain before 4pm. Seas 3 to 4 ft.

Monday Night

N wind 17 to 19 kt. Mostly cloudy. Seas 6 to 7 ft.

Tuesday

NNW wind 15 to 18 kt decreasing to 9 to 12 kt in the afternoon. Mostly sunny. Seas 5 to 6 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.