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12NM NW Hyannis MA

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 3:23 pm EDT Aug 15, 2026
Forecast Valid: 1am EDT Aug 16, 2026-6pm EDT Aug 22, 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH

Sunday

Variable winds less than 5 kt becoming S 5 to 9 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Sunday Night

S wind 7 to 9 kt. A chance of showers, mainly after 5am. Seas 1 ft or less.

Monday

S wind 10 to 13 kt, with gusts as high as 23 kt. Showers. Patchy fog before 9am. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. A slight chance of showers before 11pm, then a slight chance of showers after 2am. Seas 1 ft or less.

Tuesday

N wind 5 to 7 kt. Mostly sunny. Seas 1 ft or less.

Tuesday Night

Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming SSW 5 to 7 kt in the afternoon. Sunny. Seas 1 ft or less.

Wednesday Night

SSW wind around 7 kt. Partly cloudy. Seas 1 ft or less.

Thursday

SW wind around 8 kt. A chance of showers. Seas 1 ft or less.

*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.