Surf Forecasts:
Coastguard Beach surf forecast from 20 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 2PM (local time) - 4ft (1.2m), 5s period, SSE swell with 78 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 1.2m 5s and forecast to arrive on Sunday (Aug 23) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Monday (Aug 24) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sun 23rd Aug) | 4ft (1.2m) 5s |
Table - best surf conditions forecast for Coastguard Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – it’s a pretty quiet stretch ahead for our corner of the coast. We’re looking at a long, drawn-out run of tiny or weak surf for the next couple of weeks. The first real glimmer of something rideable doesn't show up until the very end of the run, so don't get your hopes up for any quick fixes.
Starting now, we’ve got a whole lot of nothing. From Thursday the 20th of August right through to Wednesday the 2nd of September, it’s a wasteland. Swell heights barely tickle 3ft, and most of the time they’re sitting below 2ft. The combined wave energy is weak, often reading in the single digits or low tens (like 31, 52, 78) – just no grunt behind it. The winds are a mixed bag, mostly onshore or cross, and the water temp is sitting at a pretty normal 69°F for this time of year. There are a few brief moments of glassy conditions on Saturday the 22nd afternoon, but with only 2ft of weak, short-period swell, it’s barely a ripple.
There is a big gap with no surf worth mentioning until we hit the first couple of days of September. The swell does try to build a little around the 3rd and 4th, but the conditions are still messy.
The one and only spot worth a mention is Coastguard Beach. Towards the end of the run, on the morning of Thursday the 3rd of September, we finally see some pulse. The swell pushes up to 4ft from the ESE, with a period of 8 seconds. The combined energy jumps into the moderate range at 299. The wind is cross-on from the ESE though, so it’ll be choppy. The afternoon of the 3rd sees similar size (4ft) but with direct onshore wind, which isn’t ideal.
The best chance of the whole outlook lands on Friday the 4th of September. Still at Coastguard Beach, we’ve got that same 4ft swell from the ESE, with the period hanging at 8 seconds. The energy is still moderate (280-267). The key difference is the wind shifts to a cross-offshore from the NNW in the afternoon, cleaning the face up nicely. It’s a beginner-friendly spot, so this size (4ft) is perfect for that crew, and it’s consistent, so you won’t be waiting forever. Just keep in mind, it can get crowded here sometimes.
Overall, this is a lean period. The good news is the end of the forecast window shows a hint of life, so keep an eye on the charts for any changes. For now, save your wax.
Rusty.
Short Range ForecastHeavy rain (total 29mm), heaviest during Sat night. Warm (max 25°C on Thu afternoon, min 18°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 24°C on Mon afternoon, min 17°C on Mon night). Winds decreasing (fresh winds from the SW on Mon afternoon, calm by Tue night). | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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) | ESE 9 | ESE 7 | ESE 8 | E 4 | E 4 | E 5 | E 5 | E 13 | SSE 4 | S 5 | SE 6 | SE 6 | E 6 | S 6 | S 6 | SE 11 | ESE 6 | E 10 | S 6 | SE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 16 | 10 | 39 | 15 | 21 | 54 | 27 | 15 | 30 | 45 | 11 | 20 | 3 | 6 | 3 | 5 | 4 | 8 | 18 | 39 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross-on | cross-on | glassy | cross | cross-off | cross | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-on | on | cross-off |
High Tide | 6:01PM2.56m | 6:46AM2.21m | 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 | |||||||
Low Tide | 00:34AM0.76m | 12:38PM1.01m | 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 | ||||||||
 |  |  |  |  |  | |  |  |  |  | | | | | | | | | | |
 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — |
 | 7:32 | — | — | 7:30 | — | — | 7:30 | — | — | 7:28 | — | — | 7:25 | — | — | 7:24 | — | — | 7:22 | — |
mm | — | 4 | 5 | — | — | — | 1 | 13 | 6 | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 18 | 18 | 19 | 19 | 20 | 22 | 22 | 23 | 23 | 23 | 24 | 22 | 19 | 22 | 21 | 20 | 20 | 21 |
Feels °C | 26 | 26 | 17 | 17 | 18 | 18 | 22 | 23 | 23 | 22 | 23 | 21 | 20 | 19 | 15 | 18 | 16 | 21 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 8 | N 4 | E 14 | SSW 5 | E 5 | ESE 5 | N 4 | E 12 | SE 6 | SE 6 | E 6 | S 6 | ESE 5 | N 4 | ESE 6 | S 6 | ESE 9 | SE 7 |
| kJ | 9 | 10 | 39 | 1 | 14 | 3 | 27 | 15 | 1 | 11 | 9 | 20 | 3 | 6 | 3 | 1 | 4 | 5 | 17 | 39 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | E 9 | — | N 4 | S 5 | E 13 | NNE 4 | E 8 | E 12 | — | E 6 | E 7 | E 11 | SW 4 | S 6 | SE 5 | E 11 | ESE 6 | E 13 | E 12 |
| kJ | 16 | 2 | — | 1 | 2 | 14 | 3 | 5 | 11 | — | 7 | 3 | 2 | 3 | 3 | 1 | 2 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | E 8 | S 5 | E 15 | E 14 | SE 14 | SE 13 | E 13 | E 13 | E 7 | E 12 | E 12 | E 12 | E 12 | SE 6 | E 6 | SE 11 | S 6 | E 10 | — | E 12 |
| kJ | 5 | 2 | 4 | 4 | 7 | 7 | 3 | 13 | 4 | 11 | 11 | 11 | 3 | 1 | 3 | 5 | 1 | 8 | — | 11 |
Wind waves Height (m) Direction Period (s) | S 2 | N 3 | ENE 3 | E 4 | E 4 | E 5 | S 5 | N 4 | SSE 4 | S 5 | S 4 | SW 4 | SSW 4 | WNW 3 | WNW 4 | SW 4 | SW 4 | — | S 6 | — |
| kJ | 1 | 8 | 9 | 15 | 21 | 54 | 8 | 2 | 30 | 45 | 6 | 8 | 42 | 3 | 5 | 18 | 3 | — | 18 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 132 | 132 | 477 | 2745 | 139 | 808 | 10 | 69 | 129 | 129 | 17 | 10 | 129 | 136 | 132 | 132 | 430 | 205 | 180 | 2 |
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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