Plum Island, Merrimack River Entrance Marine Forecast
Massachusetts · 42.817°, -70.820° · National Weather Service
Next 24 hours
7-Day Marine Outlook
Wind, temperature, and conditions for Plum Island, Merrimack River Entrance.
About the marine forecast for Plum Island, Merrimack River Entrance
This is the National Weather Service forecast for Plum Island, Merrimack River Entrance (Massachusetts), covering wind, wave height, temperature, and conditions over the coming week. Wind and seas are what make or break a day on the water, so start there. Remember that gusts, not the average, are what knock you around, and that wind blowing against the tide stacks the seas up steeper than the numbers suggest. Wave height here is the significant wave height, so some individual waves come through taller.
Planning a trip out of Plum Island, Merrimack River Entrance? Pair this with the Plum Island, Merrimack River Entrance tide chart so you've got the water and the weather in one look.
Frequently asked
What is the wind forecast for Plum Island, Merrimack River Entrance today?+
Today at Plum Island, Merrimack River Entrance, expect wind from the SW at 12 mph, with patchy fog. See the hourly breakdown above for how it changes through the day.
Where does this Plum Island, Merrimack River Entrance marine forecast come from?+
It's the official National Weather Service point forecast for Plum Island, Merrimack River Entrance's coordinates, covering wind, temperature, and conditions for the next 7 days. It's the same data marine forecasts are built on.
Is it a good day to go boating at Plum Island, Merrimack River Entrance?+
Check the wind first — it's what makes or breaks a day on the water — then the conditions and any advisories. Match the forecast to your boat and experience, tell someone your plan, and always leave yourself a way back.
See the wind on your chart
Pathr paints live wind, waves, and radar right on the Plum Island, Merrimack River Entrance chart, and routes you around the shallows. Free to try for two months on iOS.