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Westport Harbor, MA Marine Weather Forecast

Station BUZM3 - Buzzards Bay, MA

December 18, 2025 7:00 am EST
Location: 41.397N 71.033W
Wind Direction: WNW (300°)
Wind Speed: 5.1 knots
Wind Gust: 5.1 knots
Atmospheric Pressure: 30.33 in (1027.1 mb)
Pressure Tendency: +0.09 in (+2.9 mb)


Overnight - 33°F
Dec 18, 2025
5 to 9 mph W
Mostly Clear
Mostly clear, with a low around 33. West wind 5 to 9 mph.
Thursday - 51°F
Dec 18, 2025
3 to 12 mph S
Sunny
Sunny, with a high near 51. South wind 3 to 12 mph.
Thursday Night - 45°F
Dec 18, 2025
12 to 23 mph S
Mostly Cloudy then Chance Light Rain
A chance of rain after 1am. Mostly cloudy. Low around 45, with temperatures rising to around 51 overnight. South wind 12 to 23 mph, with gusts as high as 39 mph. Chance of precipitation is 40%.
Friday - 55°F
Dec 19, 2025
25 to 35 mph S
Light Rain
Rain before 11am, then rain and a slight chance of thunderstorms. Cloudy, with a high near 55. South wind 25 to 35 mph, with gusts as high as 53 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night - 29°F
Dec 19, 2025
21 to 25 mph W
Chance Light Rain then Partly Cloudy
A chance of rain before 7pm. Partly cloudy, with a low around 29. West wind 21 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 30%.
Saturday - 44°F
Dec 20, 2025
12 to 21 mph W
Mostly Sunny
Mostly sunny, with a high near 44. West wind 12 to 21 mph, with gusts as high as 33 mph.
Saturday Night - 37°F
Dec 20, 2025
13 to 22 mph SW
Mostly Cloudy
Mostly cloudy, with a low around 37. Southwest wind 13 to 22 mph, with gusts as high as 36 mph.
Sunday - 48°F
Dec 21, 2025
17 to 21 mph W
Slight Chance Light Rain then Mostly Sunny
A slight chance of rain between 10am and noon. Mostly sunny, with a high near 48. West wind 17 to 21 mph, with gusts as high as 35 mph.
Sunday Night - 24°F
Dec 21, 2025
20 mph NW
Partly Cloudy
Partly cloudy, with a low around 24. Northwest wind around 20 mph, with gusts as high as 30 mph.
Monday - 32°F
Dec 22, 2025
14 to 18 mph NW
Sunny
Sunny, with a high near 32. Northwest wind 14 to 18 mph.
Monday Night - 24°F
Dec 22, 2025
7 to 13 mph NW
Partly Cloudy
Partly cloudy, with a low around 24. Northwest wind 7 to 13 mph.
Tuesday - 41°F
Dec 23, 2025
8 to 18 mph W
Chance Light Snow
A chance of snow before 9am, then a chance of rain and snow. Mostly cloudy, with a high near 41. West wind 8 to 18 mph. Chance of precipitation is 50%.
Tuesday Night - 33°F
Dec 23, 2025
13 to 17 mph W
Chance Light Rain
A chance of rain before 4am. Mostly cloudy, with a low around 33. West wind 13 to 17 mph. Chance of precipitation is 40%.
Wednesday - 42°F
Dec 24, 2025
10 to 14 mph NW
Mostly Sunny
Mostly sunny, with a high near 42. Northwest wind 10 to 14 mph.

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