Surf Forecasts:
Coastguard Beach surf forecast from 12 Aug 2026:
- Most powerful swell: Monday 17 Aug, 5AM (local time) - 4.5ft (1.4m), 7s period, S swell with 173 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 1.4m 7s and forecast to arrive on Monday (Aug 17) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Monday (Aug 17) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Mon 17th Aug) | 4.5ft (1.4m) 7s |
Table - best surf conditions forecast for Coastguard Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on offer at Coastguard Beach over the next couple of weeks.
To be straight with you, the 16-day window is looking bleak. We’ve got a long stretch of flat, junk surf right through the start, and it's not until Monday the 17th that we see anything with a pulse. Even then, it’s nothing to write home about. The water is sitting at a touch warmer than normal for this time of year at 72°, so at least the dip won’t be a shock to the system.
We kick off on Tuesday the 11th and Wednesday the 12th with tiny, weak dribble. Swell heights are hovering around 0.3ft to 0.7ft, with combined energy barely reaching 5 (3-5). Winds are cross or cross-off, so the water is clean, but there’s zero push. It’s a non-starter for a paddle.
Thursday the 13th through Saturday the 15th is more of the same. We get a glimpse of a 4ft NNE swell on Saturday morning, but it’s wind-affected by a fresh 30 km/h northerly, and the period is a short 5 seconds. The combined energy jumps to 81 (moderate), but the conditions are still rated as poor. That’s not the kind of wave you want to drive for.
Sunday the 16th is glassy in the morning, but the swell is a pathetic 0.7ft. You’d be better off finding a lake.
Finally, on Monday the 17th, we get a pulse. The morning brings a 5ft south swell with a 6-second period, glassy offshore wind from the west, and combined energy hitting 140 (moderate). This is the only real standout in the whole run. For a beginner-friendly break, 5ft is about the top end of comfortable, and with clean offshore conditions, it’ll be the best we see. The crowd profile says "sometimes", so you might have a few others with the same idea. This is your window.
After that, it drops back into the doldrums. Tuesday the 18th through to the end of the period is a mix of tiny swells, strong cross-off winds, and very low energy readings (11-48). The setups are clean, but the surf is too small to ride. Even the glassy spells on Friday the 21st and Sunday the 23rd are on waves less than 3ft.
Bottom line: if you’re desperate for a paddle, bank on Monday morning the 17th. Otherwise, save your energy.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Thu morning. Warm (max 27°C on Tue night, min 19°C on Thu morning). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Fri night. Warm (max 23°C on Sun morning, min 17°C on Fri night). Winds decreasing (near gales from the SSW on Sun night, light winds from the NE by Mon afternoon). | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | SW 4 | S 6 | S 5 | E 14 | E 7 | E 13 | E 9 | E 13 | E 13 | N 3 | NNE 4 | E 9 | SSE 7 | SSE 7 | E 8 | S 6 | SE 7 | SSE 8 | NE 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 3 | 2 | 2 | 4 | 1 | 3 | 2 | 3 | 3 | 5 | 27 | 2 | 5 | 5 | 1 | 170 | 30 | 20 | 35 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross | on | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross |
High Tide | 10:56PM3.22m | 11:35AM2.90m | 11:50PM3.26m | 12:26PM3.00m | 00:42AM3.24m | 1:14PM3.05m | 1:32AM3.15m | 2:00PM3.04m | 2:21AM3.01m | 2:46PM2.99m | 3:10AM2.83m | 3:32PM2.89m | 4:00AM2.64m | ||||||
Low Tide | 5:23AM0.06m | 5:36PM0.30m | 6:13AM0.02m | 6:29PM0.23m | 7:01AM0.04m | 7:20PM0.21m | 7:48AM0.13m | 8:10PM0.24m | 8:33AM0.26m | 9:00PM0.32m | 9:18AM0.43m | 9:50PM0.44m | |||||||
 |  |  | |  | |  | |  |  | | |  | | | | | | | |
 | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — |
 | 7:45 | — | 7:44 | — | — | 7:43 | — | — | 7:40 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — |
mm | — | — | — | — | 2 | — | 1 | — | — | 4 | — | — | — | — | — | 7 | — | — | — |
Temp °C | 27 | 23 | 24 | 24 | 21 | 23 | 25 | 22 | 22 | 20 | 19 | 20 | 21 | 23 | 23 | 23 | 21 | 22 | 23 |
Feels °C | 26 | 23 | 23 | 22 | 19 | 22 | 24 | 20 | 21 | 15 | 14 | 19 | 19 | 21 | 18 | 20 | 18 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SW 4 | S 6 | S 5 | E 7 | SSW 3 | — | SSW 3 | S 5 | N 4 | S 5 | SE 6 | NNE 5 | NNE 4 | SSE 7 | E 8 | — | SE 7 | SSE 8 | NE 6 |
| kJ | 3 | 2 | 2 | 1 | 1 | — | 1 | 2 | 1 | 2 | 2 | 12 | 2 | 5 | 1 | — | 30 | 20 | 35 |
Swell 2 Height (m) Direction Period (s) | SSE 5 | E 8 | N 3 | E 14 | — | — | S 6 | E 10 | E 10 | E 9 | E 9 | SE 6 | SSE 7 | NE 4 | — | — | SSW 8 | E 6 | S 7 |
| kJ | 3 | 1 | 1 | 4 | — | — | 1 | 2 | 2 | 2 | 2 | 2 | 5 | 1 | — | — | 11 | 7 | 10 |
Swell 3 Height (m) Direction Period (s) | E 7 | E 8 | E 7 | E 8 | E 7 | E 13 | E 9 | E 13 | E 13 | — | E 12 | E 9 | E 9 | E 9 | — | — | — | — | SE 8 |
| kJ | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 3 | 3 | — | 3 | 2 | 2 | 2 | — | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | NW 3 | N 3 | — | SSW 3 | — | SW 3 | NW 2 | NNW 4 | S 5 | N 3 | NNE 4 | — | SW 2 | SW 4 | SSW 4 | S 6 | NNW 4 | NNE 6 | — |
| kJ | 1 | 1 | — | 3 | — | 5 | 1 | 4 | 2 | 5 | 27 | — | 1 | 3 | 23 | 170 | 37 | 176 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 2417 | 611 | 988 | 2622 | 486 | 205 | 2622 | 205 | 488 | 2623 | 611 | 102 | 10 | 205 | 205 | 1808 | 1155 | 0 | 66 |
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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