Brant Rock, Green Harbor River, MA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Jul 28 		AM Clouds/PM Sun
Close Hourly 		83º / 66º 15% S 13 mph 62%
12pm Partly Cloudy 81º 15% SSE 9 mph 63%
1pm Partly Cloudy 82º 15% SSE 10 mph 60%
2pm Partly Cloudy 82º 15% SSE 11 mph 60%
3pm Partly Cloudy 80º 15% S 13 mph 63%
4pm Partly Cloudy 79º 15% S 13 mph 64%
5pm Partly Cloudy 78º 15% S 13 mph 64%
6pm Partly Cloudy 77º 15% S 12 mph 66%
7pm Partly Cloudy 75º 5% S 9 mph 68%
8pm Partly Cloudy 73º 5% S 7 mph 76%
9pm Partly Cloudy 71º 6% S 6 mph 85%
10pm Partly Cloudy 69º 7% S 6 mph 90%
11pm Partly Cloudy 68º 8% SSE 6 mph 92%
Wed
Jul 29 		Showers
View Hourly 		72º / 65º 63% ESE 15 mph 84%
12am Partly Cloudy 68º 8% SSE 6 mph 94%
1am Partly Cloudy 67º 8% SE 6 mph 95%
2am Mostly Cloudy 67º 9% SE 7 mph 95%
3am Mostly Cloudy 67º 10% SE 8 mph 96%
4am Cloudy 67º 10% SE 8 mph 98%
5am Cloudy 67º 17% SE 9 mph 97%
6am Cloudy 67º 17% SE 9 mph 97%
7am Cloudy 69º 17% SE 9 mph 91%
8am Showers 71º 42% SE 12 mph 84%
9am Showers 72º 35% SE 13 mph 79%
10am Few Showers 72º 34% ESE 14 mph 77%
11am Few Showers 71º 33% ESE 14 mph 77%
12pm Few Showers 70º 30% ESE 15 mph 81%
1pm Few Showers 70º 32% ESE 15 mph 85%
2pm Showers 70º 40% ESE 14 mph 83%
3pm Showers 70º 54% ESE 13 mph 84%
4pm Rain 70º 63% ESE 14 mph 88%
5pm Showers 70º 52% ESE 14 mph 89%
6pm Showers 69º 51% E 12 mph 89%
7pm Showers 69º 54% E 12 mph 89%
8pm Showers 68º 44% E 9 mph 92%
9pm Showers 68º 49% E 8 mph 94%
10pm Rain 68º 68% E 9 mph 95%
11pm Rain 67º 65% ENE 9 mph 95%
Thu
Jul 30 		Showers
View Hourly 		70º / 63º 54% NNE 12 mph 86%
12am Rain 67º 77% ENE 10 mph 97%
1am Showers 66º 51% ENE 10 mph 98%
2am Showers 66º 47% ENE 9 mph 98%
3am Showers 66º 43% ENE 9 mph 98%
4am Cloudy 66º 24% ENE 8 mph 99%
5am Showers 67º 36% ENE 9 mph 98%
6am Cloudy 66º 24% NE 8 mph 98%
7am Few Showers 66º 32% NE 8 mph 98%
8am Few Showers 68º 34% NNE 6 mph 93%
9am Showers 69º 48% NE 7 mph 89%
10am Showers 69º 36% NNE 9 mph 86%
11am Showers 69º 45% NNE 10 mph 84%
Fri
Jul 31 		AM Showers 74º / 62º 37% N 9 mph 75%
Sat
Aug 1 		Partly Cloudy 78º / 66º 20% ESE 7 mph 70%
Sun
Aug 2 		Mostly Cloudy 80º / 67º 21% S 10 mph 67%
Mon
Aug 3 		Showers 80º / 65º 70% SW 8 mph 71%
Tue
Aug 4 		Partly Cloudy 79º / 65º 19% NW 7 mph 61%

Weather Radar for Brant Rock, Green Harbor River, MA See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Brant Rock, Green Harbor River, MA

Today
High : 76ºF
S wind 7 to 10 kt increasing to 10 to 13 kt in the afternoon. Partly sunny. Seas 1 to 2 ft.
Tonight
Low : 66ºF
SE wind 9 to 11 kt. A slight chance of showers and thunderstorms after 3am. Seas around 2 ft.
Wednesday
High : 71ºF
ESE wind 15 to 17 kt, with gusts as high as 25 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 9am. Seas around 3 ft.
Wednesday Night
Low : 65ºF
ESE wind 7 to 12 kt. Showers, with thunderstorms also possible after 5am. Patchy fog before 9pm. Seas around 2 ft.
Thursday
High : 69ºF
NE wind 8 to 11 kt. Showers and possibly a thunderstorm. Seas around 2 ft.
Thursday Night
Low : 64ºF
N wind around 6 kt. Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms after 9pm. Seas around 2 ft.
Friday
High : 70ºF
NNE wind around 9 kt. A chance of showers. Seas around 2 ft.
Friday Night
Low : 65ºF
Variable winds 5 kt or less. Mostly cloudy. Seas around 1 ft.
Saturday
High : 73ºF
Variable winds less than 5 kt becoming NE around 6 kt in the morning. Mostly sunny. Seas around 1 ft.

NOAA Buoy Data Near Brant Rock, Green Harbor River, MA See Map

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    Wind Speed Forecast for Brant Rock, Green Harbor River, MA

    TuesdayWednesdayThursday
    Wind Speed (MPH) 91376812151491086
    4pm8pm12am4am8am12pm4pm8pm12am4am8am12pm
    MPH 91376812151491086
    DIR SSESSSSESESEESEESEEENEENENNE

    Current Weather Conditions In Brant Rock, Green Harbor River, MA

    As Of: 17 minutes ago

    • 81ºF
    • 84ºF
    • 9mph
    • 0º (SSE)
    • 9mph
    • Partly Cloudy
    • 10mi
    • 29.74"
    • 63%
    • 0ºF

    The weather right now in Brant Rock, Green Harbor River, MA is Partly Cloudy. The current temperature is 81°F, and the expected high and low for today, Tuesday, July 28, 2026, are 83° high temperature and 66°F low temperature. The wind is currently blowing at 9 miles per hour, and coming from the South Southeast. The wind is gusting to 9 mph. With the wind and the atmosphere the temperature feels like 84° Fahrenheit. Expected precipitation is 15 percent, with current humidity at 63 percent, and air pressure at 29.74 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 2:36am Tue Jul 28 2026

    ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 PM EDT WEDNESDAY...

    WHAT: Southeast winds 10 to 20 kt with gusts up to 30 kt and
    seas 2 to 4 feet expected.

    WHERE: Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

    WHEN: From 2 AM to 8 PM EDT Wednesday.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced mariners, especially those operating smaller
    vessels, should avoid navigating in hazardous conditions.

    &&