Coastal Waters Forecast for Boston Harbor (ANZ230) (Text-Only)
NWS Forecast for: Boston Harbor (ANZ230)
Issued by: National Weather Service Norton, MA
Last Update: 105 PM EDT Thu Sep 18 2025


This Afternoon: SE winds 5 to 10 kt. Waves 1 foot or less.

Tonight: S winds 5 to 10 kt, becoming W after midnight. Waves 1 foot or less.

Fri: NW winds around 10 kt. Waves around 2 ft.

Fri Night: N winds 10 to 15 kt. Waves around 2 ft.

Sat: NE winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Waves around 2 ft in the morning, then 1 foot or less.

Sat Night: SE winds 5 to 10 kt, becoming W after midnight. Waves 1 foot or less.

Sun Through Mon Night: SW winds 10 to 15 kt with gusts up to 20 kt. Waves around 2 ft.

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.







Zone Forecast: Boston Harbor (ANZ230)

Visit your local NWS office at: https://www.weather.gov/boston