Surf Forecasts:
Brant Rock surf forecast from 13 Jul 2026:
- Best quality surf: Sunday 19 Jul, 5PM (local time) - 3.5ft (1.1m), 6s period, NNE swell with offshore winds.
- Most powerful swell: Sunday 19 Jul, 5PM (local time) - 3.5ft (1.1m), 6s period, NNE swell with 80 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 5PM (local time) - 3.5ft (1.1m), 6s period with NNE 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 Sunday (Jul 19) at 5PM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.2m and 6s. Another secondary swell of 0.1m and 12s is also forecast. 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 1.1m 6s and forecast to arrive on Sunday (Jul 19) at 5PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Jul 14) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sun 19th Jul) | 3.5ft (1.1m) 6s |
| Best Surf | 5PM (Sun 19th Jul) | 3.5ft (1.1m) 6s |
| Most Powerful | 5PM (Sun 19th Jul) | 3.5ft (1.1m) 6s |
Table - best surf conditions forecast for Brant Rock over the next 16 days.
Short Range ForecastMostly dry. Warm (max 32°C on Tue afternoon, min 20°C on Sun night). Winds decreasing (fresh winds from the SW on Tue night, light winds from the NW by Wed afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 30°C on Thu afternoon, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sun 19 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | E 7 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | N 4 | E 9 | E 15 | N 4 | NE 4 | N 4 | E 14 | E 14 | E 13 | E 13 | SE 5 | N 4 | NNE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 17 | 2 | 4 | 10 | 5 | 19 | 4 | 4 | 4 | 3 | 4 | 24 | 80 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | off | off | off | cross | cross-off | off | off | cross-on | cross | cross-on | cross | cross-off | glassy | cross-off | off | off | off |
High Tide | 10:14PM3.33m | 10:56AM2.76m | 11:11PM3.43m | 11:51AM2.85m | 00:05AM3.48m | 12:44PM2.94m | 00:59AM3.48m | 1:36PM3.00m | 1:52AM3.41m | 2:27PM3.04m | 2:44AM3.28m | 3:17PM3.05m | 3:37AM3.11m | 4:09PM3.02m | |||||||
Low Tide | 4:43AM-0.22m | 4:50PM0.12m | 5:38AM-0.30m | 5:46PM0.03m | 6:31AM-0.35m | 6:40PM-0.04m | 7:22AM-0.36m | 7:34PM-0.06m | 8:12AM-0.31m | 8:28PM-0.05m | 9:01AM-0.22m | 9:22PM0.00m | 9:50AM-0.09m | ||||||||
 | |  |  | | |  | | | | | | | | | | | | | | | |
 | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — |
 | 8:17 | — | 8:17 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:14 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 25 | 26 | 21 | 27 | 32 | 26 | 30 | 30 | 29 | 28 | 30 | 25 | 19 | 20 | 21 | 23 | 25 | 22 | 26 | 27 |
Feels °C | 19 | 23 | 22 | 16 | 25 | 29 | 26 | 30 | 28 | 28 | 24 | 25 | 23 | 15 | 18 | 20 | 22 | 22 | 19 | 25 | 27 |
Swell 1 Height (m) Direction Period (s) | — | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | N 4 | N 3 | E 9 | N 4 | NE 4 | E 9 | N 4 | — | — | — | SE 5 | SE 6 | ESE 6 |
| kJ | — | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 7 | 1 | 2 | 10 | 4 | 1 | 3 | — | — | — | 4 | 6 | 3 |
Swell 2 Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 8 | E 8 | SE 6 | SE 5 | SE 5 | E 9 | E 9 | E 15 | E 9 | E 9 | E 14 | E 14 | E 14 | E 8 | E 13 | E 13 | E 13 | E 12 |
| kJ | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 2 | 1 | 4 | 4 | 4 | 1 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | E 10 | — | E 8 | — | S 5 | E 7 | — | — | SE 5 | SE 5 | — | S 5 | E 15 | E 14 | E 8 | — | E 13 | E 8 | E 8 | E 13 | — |
| kJ | 2 | — | 1 | — | 1 | 1 | — | — | 1 | 1 | — | 1 | 5 | 4 | 1 | — | 4 | 1 | 1 | 3 | — |
Wind waves Height (m) Direction Period (s) | — | — | S 3 | SW 3 | SW 3 | SSW 3 | SW 3 | NW 3 | N 4 | NNW 3 | WSW 2 | — | — | N 4 | — | — | S 4 | S 5 | S 3 | N 4 | NNE 6 |
| kJ | — | — | 7 | 7 | 5 | 7 | 2 | 2 | 17 | 1 | 1 | — | — | 19 | — | — | 1 | 1 | 3 | 24 | 80 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 958 | 648 | 978 | 975 | 1119 | 347 | 796 | 104 | 109 | 152 | 526 | 58 | 515 | 646 | 515 | 958 | 523 | 958 | 80 | 5 | 0 |
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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