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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 5:03 pm EST Jan 12, 2026
Forecast Valid: 1am EST Jan 13, 2026-6pm EST Jan 19, 2026

Tuesday

W wind around 13 kt becoming SW in the afternoon. Sunny. Seas around 2 ft.

Tuesday Night

SSW wind 13 to 16 kt increasing to 16 to 19 kt after midnight. Winds could gust as high as 25 kt. Mostly cloudy. Seas 2 to 3 ft.

Wednesday

SSW wind 12 to 17 kt. Mostly cloudy. Seas around 3 ft.

Wednesday Night

SSW wind 7 to 9 kt. A chance of rain, mainly after 7pm. Seas around 2 ft.

Thursday

SSW wind 9 to 12 kt becoming SW 12 to 15 kt in the afternoon. A chance of rain, mainly before noon. Seas 2 to 3 ft.

Thursday Night

WSW wind 15 to 20 kt becoming WNW after midnight. A chance of rain before 2am, then a chance of snow. Seas 3 ft building to 5 ft.

Friday

W wind 17 to 21 kt. A chance of snow before 9am. Patchy freezing spray before 9am. Seas around 6 ft.

Friday Night

WSW wind 11 to 15 kt. Mostly cloudy. Seas around 6 ft.

Saturday

SSW wind 10 to 12 kt. Mostly sunny. Seas 5 ft subsiding to 3 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.