Surf Forecasts:
Brant Rock surf forecast from 12 Oct 2026:
- Best quality surf: Wednesday 14 Oct, 5AM (local time) - 3.5ft (1.0m), 7s period, E swell with offshore winds.
- Most powerful swell: Saturday 17 Oct, 11PM (local time) - 6ft (1.8m), 6s period, NNW swell with 253 kJ wave energy.
- Next surfable swell (1★+): Wednesday 14 Oct, 5AM (local time) - 3.5ft (1.0m), 7s period with E swell.
Best Forecast Surf Conditions for Brant Rock this week:
The surf forecast for Brant Rock over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Oct 14) at 5AM. The primary swell is predicted to be 1.0m and 7s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Brant Rock in the next 16 days are 1.8m 6s and forecast to arrive on Saturday (Oct 17) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Saturday (Oct 17) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 14th Oct) | 3.5ft (1.0m) 7s |
| Best Surf | 5AM (Wed 14th Oct) | 3.5ft (1.0m) 7s |
| Most Powerful | 11PM (Sat 17th Oct) | 6ft (1.8m) 6s |
Table - best surf conditions forecast for Brant Rock over the next 16 days.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon night. Warm (max 23°C on Wed afternoon, min 11°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Fri night. Icy conditions (max 19°C on Fri night, min 0°C on Sat night). Winds increasing (light winds from the ESE on Thu night, strong winds from the NW by Sat afternoon). | ||||||||||||||||||||
Monday 12 | Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 18 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | E 6 | ENE 6 | NE 6 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | N 4 | NE 6 | NE 5 | E 9 | E 9 | ESE 8 | E 9 | NW 6 | N 6 | NNW 6 | NNE 6 | E 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 64 | 47 | 32 | 229 | 180 | 113 | 57 | 43 | 16 | 18 | 54 | 11 | 7 | 6 | 6 | 2 | 148 | 194 | 60 | 10 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | on | cross-on | cross-off | off | cross-off | cross-off | cross | cross-on | on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | off |
High Tide | 1:04PM3.08m | 1:35AM2.78m | 1:43PM3.00m | 2:16AM2.66m | 2:23PM2.91m | 2:58AM2.55m | 3:06PM2.81m | 3:43AM2.44m | 3:53PM2.71m | 4:33AM2.35m | 4:44PM2.62m | 5:27AM2.29m | 5:40PM2.56m | ||||||||
Low Tide | 7:20PM-0.03m | 7:30AM0.29m | 8:01PM0.04m | 8:10AM0.40m | 8:44PM0.14m | 8:53AM0.50m | 9:29PM0.25m | 9:38AM0.60m | 10:17PM0.36m | 10:28AM0.68m | 11:10PM0.44m | 11:23AM0.73m | 00:06AM0.49m | ||||||||
 |  |  |  | | | | |  | | | |  | | | | |  | | | | |
 | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — |
 | — | 6:06 | — | — | 6:04 | — | — | 6:02 | — | — | 6:00 | — | — | 6:00 | — | — | 5:58 | — | — | 5:55 | — |
mm | — | — | 1 | 2 | 1 | 3 | — | — | — | — | — | — | — | — | 14 | 1 | — | — | — | — | — |
Temp °C | 13 | 19 | 18 | 11 | 13 | 18 | 21 | 23 | 20 | 13 | 13 | 12 | 11 | 18 | 19 | 10 | 9 | 4 | 4 | 12 | 11 |
Feels °C | 10 | 18 | 16 | 6 | 9 | 15 | 20 | 21 | 18 | 7 | 9 | 9 | 6 | 13 | 16 | 2 | -1 | -7 | -4 | 7 | 5 |
Swell 1 Height (m) Direction Period (s) | E 6 | ENE 6 | ESE 10 | SSW 8 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 7 | E 6 | NE 6 | NE 5 | NE 4 | NE 5 | ESE 8 | N 8 | E 9 | SW 7 | E 11 | NNE 6 | NNE 4 |
| kJ | 64 | 47 | 9 | 7 | 180 | 113 | 57 | 43 | 16 | 3 | 54 | 11 | 5 | 4 | 6 | 1 | 2 | 2 | 2 | 10 | 2 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | SSW 9 | — | — | — | SE 7 | SE 8 | S 7 | NE 9 | NNW 4 | E 7 | E 9 | E 9 | — | E 9 | — | — | — | — | — |
| kJ | 20 | 19 | 8 | — | — | — | 2 | 2 | 3 | 3 | 3 | 1 | 7 | 6 | — | 2 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SSW 10 | SSW 9 | — | — | — | — | SE 7 | SE 8 | SE 8 | E 10 | E 10 | E 10 | E 7 | — | S 6 | — | — | — | — | — | E 10 |
| kJ | 18 | 16 | — | — | — | — | 13 | 9 | 3 | 2 | 2 | 2 | 1 | — | 3 | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | N 4 | N 4 | NE 6 | ENE 7 | SSE 4 | SSW 3 | WSW 3 | WNW 2 | NW 3 | N 4 | — | — | SE 3 | SSE 4 | WNW 4 | NW 5 | NW 6 | N 6 | NNW 6 | — | — |
| kJ | 11 | 10 | 32 | 229 | 26 | 3 | 3 | 1 | 2 | 18 | — | — | 3 | 26 | 38 | 107 | 148 | 194 | 60 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 31 | 7 | 84 | 529 | 529 | 47 | 2 | 42 | 107 | 833 | 1207 | 1207 | 796 | 1207 | 130 | 1287 | 1155 | 31 | 2657 | 53 | 992 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Brant Rock surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Brant Rock Surf forecast
The above surf forecast table for Brant Rock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Brant Rock can be found by selecting the local surf guide option on the grey menu. Our Brant Rock surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Brant Rock) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Brant Rock may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Brant Rock is 5 km (3 miles) from Marshfield. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Marshfield. Marshfield has rooms for a wide range of budgets as well as car hire and transport links.
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