Expires:202512141000;;529342 FZUS51 KBOX 132105 CWFBOX Coastal Waters Forecast for Massachusetts and Rhode Island National Weather Service Boston/Norton MA 404 PM EST Sat Dec 13 2025 Coastal waters from the Merrimack River MA to Watch Hill RI out to 25 NM ANZ236-141000- Narragansett Bay- 405 PM EST Sat Dec 13 2025 .TONIGHT...W winds 10 to 15 kt with gusts up to 20 kt, diminishing to 5 to 10 kt after midnight. Waves 2 to 3 ft. A slight chance of rain this evening, then snow with a chance of rain after midnight with vsby 1 NM or less. .SUN...NW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 2 to 3 ft. Snow, mainly in the morning with vsby 1 NM or less. .SUN NIGHT...NW winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 3 ft. Light freezing spray likely. .MON...NW winds 15 to 20 kt, diminishing to 10 to 15 kt in the afternoon. Gusts up to 25 kt. Waves 2 to 3 ft. Light freezing spray likely in the morning. .MON NIGHT THROUGH TUE NIGHT...SW winds 15 to 20 kt. Waves 2 to 3 ft. .WED THROUGH THU...S winds 15 to 20 kt with gusts up to 25 kt. Waves 2 to 4 ft. .THU NIGHT...S winds 25 to 30 kt with gusts up to 35 kt. Waves 4 to 6 ft. Rain likely. Seas are reported as significant wave height, which is the average of the highest third of the waves. Individual wave heights may be more than twice the significant wave height. $$ For the latest updates...please visit our webpage at www.weather.gov/boston You can follow us on Facebook at www.facebook.com/NWSBoston You can follow us on Twitter at @NWSBoston