Coastal Waters Forecast for Boston Harbor (ANZ230) (Text-Only)
NWS Forecast for: Boston Harbor (ANZ230)
Issued by: National Weather Service Norton, MA
Last Update: 405 PM EDT Mon Mar 23 2026


Tonight: N winds 10 to 15 kt. Gusts up to 20 kt this evening. Waves around 2 ft. A slight chance of rain and snow this evening.

Tue: N winds 10 to 15 kt, becoming SW 5 to 10 kt in the afternoon. Waves around 2 ft in the morning, then 1 foot or less. At the outer harbor entrance, waves 2 to 4 ft.

Tue Night: SW winds 10 to 15 kt. Waves around 2 ft.

Wed: W winds 5 to 10 kt, becoming SW 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves 1 foot or less, then around 2 ft in the afternoon.

Wed Night And Thu: SW winds 15 to 20 kt. Waves around 2 ft. A chance of rain through the day.

Thu Night: SW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. A chance of rain in the evening, then rain likely after midnight.

Fri: NW winds 15 to 20 kt with gusts up to 25 kt. Waves around 2 ft. Rain likely.

Fri Night Through Sat Night: W winds 15 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)

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