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

Day Sky High / Low Precip Wind Humidity
Tue
Jul 28 		Partly Cloudy
Close Hourly 		82º / 65º 15% S 13 mph 68%
9am Mostly Cloudy 74º 8% S 7 mph 82%
10am Mostly Cloudy 76º 15% S 8 mph 77%
11am Partly Cloudy 77º 15% S 9 mph 72%
12pm Partly Cloudy 79º 15% SSE 10 mph 66%
1pm Partly Cloudy 80º 15% SSE 11 mph 63%
2pm Partly Cloudy 80º 15% SSE 12 mph 62%
3pm Partly Cloudy 80º 15% S 13 mph 63%
4pm Partly Cloudy 80º 15% S 13 mph 63%
5pm Mostly Cloudy 79º 15% S 13 mph 63%
6pm Mostly Cloudy 77º 15% S 11 mph 64%
7pm Partly Cloudy 75º 5% S 9 mph 68%
8pm Partly Cloudy 73º 5% S 7 mph 75%
9pm Mostly Clear 71º 6% S 6 mph 83%
10pm Partly Cloudy 70º 7% S 6 mph 88%
11pm Mostly Cloudy 68º 7% SSE 6 mph 91%
Wed
Jul 29 		PM Rain
View Hourly 		72º / 65º 75% ESE 14 mph 84%
12am Partly Cloudy 68º 8% SSE 6 mph 94%
1am Mostly Cloudy 67º 8% SSE 6 mph 97%
2am Mostly Cloudy 67º 8% SE 6 mph 96%
3am Mostly Cloudy 67º 8% SE 7 mph 96%
4am Mostly Cloudy 66º 9% SE 7 mph 98%
5am Cloudy 66º 15% SE 7 mph 99%
6am Cloudy 66º 17% SE 7 mph 98%
7am Cloudy 68º 16% SE 8 mph 92%
8am Cloudy 70º 12% SE 11 mph 84%
9am Cloudy 71º 19% ESE 11 mph 79%
10am Cloudy 72º 24% ESE 12 mph 76%
11am Cloudy 71º 24% ESE 13 mph 76%
12pm Cloudy 70º 24% ESE 14 mph 81%
1pm Few Showers 70º 30% ESE 14 mph 84%
2pm Showers 69º 52% E 14 mph 84%
3pm Light Rain 69º 61% E 13 mph 86%
4pm Rain 69º 72% E 13 mph 87%
5pm Rain 69º 75% E 14 mph 88%
6pm Rain 69º 68% E 13 mph 86%
7pm Rain 68º 79% ENE 14 mph 88%
8pm Rain 68º 71% ENE 10 mph 93%
9pm Rain 67º 72% ENE 10 mph 97%
10pm Rain 67º 84% ENE 10 mph 97%
11pm Rain 67º 78% ENE 9 mph 97%
Thu
Jul 30 		Showers
View Hourly 		69º / 63º 71% NNE 13 mph 86%
12am Heavy Rain 67º 72% ENE 9 mph 98%
1am Rain 66º 76% ENE 10 mph 99%
2am Rain 66º 71% ENE 10 mph 98%
3am Showers 66º 56% ENE 9 mph 98%
4am Showers 66º 55% ENE 9 mph 98%
5am Showers 67º 47% ENE 9 mph 97%
6am Showers 66º 50% ENE 10 mph 97%
7am Showers 66º 42% ENE 9 mph 97%
8am Showers 68º 57% NE 9 mph 92%
Fri
Jul 31 		AM Showers 74º / 62º 35% NNE 9 mph 75%
Sat
Aug 1 		Partly Cloudy 79º / 66º 20% SSE 7 mph 70%
Sun
Aug 2 		Mostly Cloudy 81º / 67º 24% S 11 mph 67%
Mon
Aug 3 		Showers 80º / 65º 69% WSW 8 mph 69%
Tue
Aug 4 		Partly Cloudy 80º / 65º 16% NW 8 mph 60%

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 5 to 8 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) 7111366711141410109
    1pm5pm9pm1am5am9am1pm5pm9pm1am5am9am
    MPH 7111366711141410109
    DIR SSSESSSSESEESEESEEENEENEENE

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

    As Of: 28 minutes ago

    • 74ºF
    • 74ºF
    • 7mph
    • 0º (S)
    • 7mph
    • Mostly Cloudy
    • 10mi
    • 29.77"
    • 82%
    • 0ºF

    The weather right now in Brant Rock, Green Harbor River, MA is Mostly Cloudy. The current temperature is 74°F, and the expected high and low for today, Tuesday, July 28, 2026, are 82° high temperature and 65°F low temperature. The wind is currently blowing at 7 miles per hour, and coming from the South. The wind is gusting to 7 mph. With the wind and the atmosphere the temperature feels like 74° Fahrenheit. Expected precipitation is 8 percent, with current humidity at 82 percent, and air pressure at 29.77 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.

    &&