


Boston Harbor Marine Forecast
Updated 1:03am EDT Aug 27, 2026
Rest Of Tonight
SW winds around 5 kt. Waves 1 foot or less.
Thu
S winds around 5 kt, increasing to 10 to 15 kt with gusts up to 20 kt in the afternoon. Waves around 2 ft.
Thu Night
S winds 5 to 10 kt. Gusts up to 20 kt in the evening. Waves around 2 ft in the evening, then 1 foot or less. A chance of.
Fri
S winds around 5 kt. Waves 1 foot or less. A chance of showers.
Fri Night
W winds 5 to 10 kt, becoming NW after midnight.
Sat And Sat Night
SW winds 5 to 10 kt. Waves around 2 ft.
Sun Through Mon
NW winds 5 to 10 kt. Waves around 2 ft.
Mon Night
S winds 5 to 10 kt. Waves 1 foot or less. A chance of showers.