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20NM E Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:33 pm EDT May 20, 2026
Forecast Valid: 6pm EDT May 20, 2026-6pm EDT May 27, 2026

Tonight

SW wind 12 to 15 kt becoming WNW 9 to 12 kt after midnight. Winds could gust as high as 21 kt. A chance of showers and thunderstorms. Seas 2 to 3 ft.

Thursday

NNE wind 7 to 12 kt. A chance of showers, mainly before 9am. Seas around 2 ft.

Thursday Night

Variable winds 5 kt or less. Cloudy during the early evening, then gradual clearing. Seas around 2 ft.

Friday

NE wind 6 to 11 kt. Sunny. Seas around 2 ft.

Friday Night

Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.

Saturday

Variable winds less than 5 kt becoming ESE 5 to 8 kt in the morning. A slight chance of showers after 2pm. Seas around 1 ft.

Saturday Night

ESE wind 8 to 13 kt. Showers likely, mainly after 1am. Seas 1 to 2 ft.

Sunday

E wind around 18 kt, with gusts as high as 24 kt. Showers likely. Seas 3 to 4 ft.

Sunday Night

ESE wind 9 to 13 kt. Showers likely. Seas around 4 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.