Surf Forecasts:
Coastguard Beach surf forecast from 21 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 11PM (local time) - 3.5ft (1.1m), 6s period, SSE swell with 88 kJ wave energy.
Best Forecast Surf Conditions for Coastguard Beach this week:
The most powerful waves expected at Coastguard Beach in the next 16 days are 1.1m 6s and forecast to arrive on Sunday (Aug 23) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Tuesday (Aug 25) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sun 23rd Aug) | 3.5ft (1.1m) 6s |
Table - best surf conditions forecast for Coastguard Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let me level with you straight up: this is a tough one. We’re looking at the next 16 days for Coastguard Beach, and to be honest, there’s barely a whisper of surf to get excited about.
The whole pattern is a long, drawn-out flat spell. From now, right through the end of the first week and into the second, the swell is tiny and the energy is just not there. The combined energy of all swells directed here is barely registering; it’s mostly in the single or low double digits, which is weak. We’re looking at a prolonged gap of many days where there’s simply nothing worth paddling out for.
The only real window of any note comes late on Friday, the 28th of August. The swell meters out at a tiny 2 ft from the SE, with a period of 6 seconds. That’s small, weak, short-period windswell. The real story here is the wind. For a moment, it turns glassy (ENE, 5 mph). That is the cleanest we’ll see this entire forecast. It’s not a *good* surf, but it’s the least bad option. The water temp is 69°, which is about normal for the time of year.
For the rest of the run, it’s a mix of onshore slop, cross-shore chop, and tiny, barely breaking bumps. Don’t bother. A blank run like this is more normal for the area when the conditions line up wrong.
Stay patient, and check back in with me later.
- Rusty
Short Range ForecastModerate rain (total 13mm), heaviest on Fri afternoon. Warm (max 25°C on Mon morning, min 19°C on Fri afternoon). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Tue afternoon. Warm (max 25°C on Mon afternoon, min 19°C on Tue morning). Wind will be generally light. | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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 8 | ENE 5 | E 5 | E 5 | E 5 | E 12 | SE 5 | ESE 6 | SE 7 | SE 6 | SE 6 | SE 6 | ESE 6 | S 6 | S 6 | E 13 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 34 | 56 | 57 | 25 | 7 | 11 | 51 | 26 | 16 | 11 | 9 | 9 | 3 | 6 | 3 | 13 | 12 | 12 | 12 | 14 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | off | glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | cross | cross |
High Tide | 6:57PM2.51m | 7:46AM2.18m | 7:54PM2.50m | 8:43AM2.20m | 8:48PM2.55m | 9:33AM2.27m | 9:38PM2.62m | 10:18AM2.36m | 10:23PM2.70m | 10:58AM2.47m | 11:06PM2.77m | 11:37AM2.59m | 11:46PM2.83m | |||||||
Low Tide | 1:34AM0.80m | 1:35PM1.04m | 2:31AM0.78m | 2:31PM1.02m | 3:22AM0.72m | 3:23PM0.95m | 4:08AM0.64m | 4:10PM0.85m | 4:49AM0.56m | 4:54PM0.74m | 5:28AM0.49m | 5:36PM0.63m | ||||||||
 |  |  | | | |  |  |  | | | |  |  | | | | | |  | |
 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | 7:30 | — | — | 7:30 | — | — | 7:28 | — | — | 7:25 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — |
mm | 3 | 4 | — | 2 | 1 | 3 | — | — | — | — | — | — | 1 | 2 | — | — | — | — | — | — |
Temp °C | 19 | 19 | 20 | 20 | 20 | 21 | 23 | 24 | 25 | 25 | 23 | 21 | 23 | 21 | 20 | 23 | 22 | 24 | 25 | 23 |
Feels °C | 17 | 16 | 20 | 24 | 21 | 23 | 23 | 25 | 21 | 20 | 21 | 18 | 20 | 18 | 18 | 22 | 19 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 14 | E 13 | E 5 | E 5 | E 5 | E 12 | ESE 6 | SE 7 | SE 6 | SE 6 | SE 6 | ESE 6 | S 6 | S 6 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
| kJ | 34 | 14 | 3 | 25 | 7 | 4 | 11 | 26 | 16 | 11 | 9 | 9 | 3 | 6 | 3 | 11 | 12 | 12 | 12 | 14 |
Swell 2 Height (m) Direction Period (s) | — | SE 14 | E 8 | E 13 | N 4 | N 4 | E 12 | E 12 | E 7 | E 6 | E 7 | S 6 | E 6 | ESE 6 | NW 4 | E 13 | E 12 | SSW 4 | ESE 9 | E 11 |
| kJ | — | 7 | 1 | 3 | 3 | 1 | 11 | 11 | 3 | 3 | 3 | 3 | 1 | 3 | 1 | 3 | 3 | 2 | 8 | 2 |
Swell 3 Height (m) Direction Period (s) | E 14 | — | SE 13 | S 5 | E 7 | E 12 | — | E 6 | E 12 | ENE 7 | E 11 | E 6 | E 11 | E 11 | E 6 | E 13 | — | E 11 | E 11 | E 10 |
| kJ | 4 | — | 7 | 4 | 4 | 11 | — | 3 | 11 | 4 | 2 | 3 | 2 | 2 | 3 | 13 | — | 2 | 2 | 8 |
Wind waves Height (m) Direction Period (s) | ENE 4 | ENE 5 | E 5 | N 4 | — | SSE 3 | SE 5 | SSW 4 | SSW 3 | SW 4 | SSW 4 | SW 4 | SSW 5 | WSW 3 | WSW 3 | SW 4 | SW 4 | — | S 3 | S 3 |
| kJ | 24 | 56 | 57 | 5 | — | 3 | 51 | 5 | 4 | 15 | 13 | 9 | 44 | 8 | 4 | 26 | 9 | — | 5 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 337 | 139 | 816 | 10 | 76 | 842 | 76 | 10 | 11 | 132 | 17 | 10 | 132 | 119 | 205 | 1148 | 477 | 132 | 1148 | 132 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Coastguard Beach Surf forecast
The above surf forecast table for Coastguard Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Coastguard Beach can be found by selecting the local surf guide option on the grey menu. Our Coastguard Beach 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 (Coastguard Beach) 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 Coastguard Beach 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.
Coastguard Beach is 14 km (9 miles) from Brewster. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Brewster. Brewster has rooms for a wide range of budgets as well as car hire and transport links.
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