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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:04 am EDT May 26, 2026
Forecast Valid: 4am EDT May 26, 2026-6pm EDT Jun 1, 2026

Tuesday

Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Partly sunny. Seas around 3 ft.

Tuesday Night

SW wind around 12 kt. Mostly cloudy. Seas around 3 ft.

Wednesday

SW wind 12 to 15 kt. Isolated thunderstorms after 4pm. Seas 2 to 3 ft.

Wednesday Night

SW wind 9 to 13 kt becoming NNW after midnight. A slight chance of showers and thunderstorms. Seas around 2 ft.

Thursday

N wind 10 to 12 kt. Mostly sunny. Seas around 2 ft.

Thursday Night

NNW wind 5 to 7 kt. Partly cloudy. Seas around 2 ft.

Friday

NNW wind 7 to 9 kt becoming ESE in the afternoon. Mostly sunny. Seas around 2 ft.

Friday Night

SSE wind 10 to 13 kt. A chance of showers. Seas around 2 ft.

Saturday

NW wind around 16 kt becoming NNE in the afternoon. Winds could gust as high as 22 kt. A chance of showers. Seas around 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.