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20NM W Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:44 pm EDT Oct 14, 2025
Forecast Valid: 9pm EDT Oct 14, 2025-6pm EDT Oct 21, 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT WEDNESDAY...

Tonight

N wind 14 to 17 kt decreasing to 10 to 13 kt after midnight. A slight chance of showers before 2am. Seas 3 ft subsiding to 1 ft.

Wednesday

NNW wind 9 to 12 kt increasing to 13 to 16 kt in the afternoon. A slight chance of showers between 4pm and 5pm. Seas 1 ft building to 3 ft.

Wednesday Night

NNW wind 19 to 21 kt. A chance of showers, mainly after 5am. Seas around 3 ft.

Thursday

N wind 20 to 23 kt, with gusts as high as 33 kt. A chance of showers, mainly after noon. Seas around 3 ft.

Thursday Night

N wind 21 to 24 kt. A chance of showers. Seas around 3 ft.

Friday

N wind 18 to 21 kt. A chance of showers, mainly before 11am. Seas around 3 ft.

Friday Night

NNW wind 9 to 11 kt. Mostly clear. Seas around 1 ft.

Saturday

NNW wind 7 to 9 kt becoming WSW in the afternoon. Sunny. Seas around 1 ft.

Saturday Night

SW wind around 10 kt. Partly cloudy. Seas around 1 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.