Your Ultimate Boating Resource

HomeForecastsRhode Island ForecastsPortsmouth, RI Marine Weather

Portsmouth, RI Marine Weather Forecast

Overnight - 18°F
Jan 02, 2026
12 mph W
Mostly Cloudy
Mostly cloudy, with a low around 18. West wind around 12 mph.
Friday - 29°F
Jan 02, 2026
12 mph W
Mostly Sunny
Mostly sunny, with a high near 29. West wind around 12 mph.
Friday Night - 21°F
Jan 02, 2026
12 mph W
Mostly Clear
Mostly clear, with a low around 21. West wind around 12 mph.
Saturday - 30°F
Jan 03, 2026
10 mph W
Mostly Sunny
Mostly sunny, with a high near 30. West wind around 10 mph.
Saturday Night - 25°F
Jan 03, 2026
7 mph NW
Mostly Cloudy then Chance Light Snow
A chance of snow after 1am. Mostly cloudy, with a low around 25. Northwest wind around 7 mph. Chance of precipitation is 30%.
Sunday - 31°F
Jan 04, 2026
5 to 9 mph NW
Slight Chance Light Snow then Partly Sunny
A slight chance of snow before 11am. Partly sunny, with a high near 31. Northwest wind 5 to 9 mph. Chance of precipitation is 20%.
Sunday Night - 16°F
Jan 04, 2026
12 mph NW
Mostly Clear
Mostly clear, with a low around 16. Northwest wind around 12 mph.
Monday - 31°F
Jan 05, 2026
6 to 9 mph W
Mostly Sunny
Mostly sunny, with a high near 31. West wind 6 to 9 mph.
Monday Night - 25°F
Jan 05, 2026
6 mph SW
Slight Chance Light Snow
A slight chance of snow after 8pm. Cloudy, with a low around 25. Southwest wind around 6 mph.
Tuesday - 41°F
Jan 06, 2026
8 mph SW
Slight Chance Light Snow then Slight Chance Light Rain
A slight chance of snow before 7am, then a slight chance of rain. Mostly cloudy, with a high near 41. Southwest wind around 8 mph.
Tuesday Night - 34°F
Jan 06, 2026
8 mph N
Chance Light Rain
A chance of rain. Mostly cloudy, with a low around 34. North wind around 8 mph. Chance of precipitation is 30%.
Wednesday - 43°F
Jan 07, 2026
9 mph S
Chance Light Rain
A chance of rain. Mostly cloudy, with a high near 43. South wind around 9 mph. Chance of precipitation is 30%.
Wednesday Night - 34°F
Jan 07, 2026
8 mph NW
Slight Chance Light Rain
A slight chance of rain before 2am. Mostly cloudy, with a low around 34. Northwest wind around 8 mph.
Thursday - 43°F
Jan 08, 2026
8 mph NW
Partly Sunny then Slight Chance Light Rain
A slight chance of rain after 4pm. Partly sunny, with a high near 43. Northwest wind around 8 mph.

Don't Miss