Surf Forecasts:
Coastguard Beach surf forecast from 16 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 11AM (local time) - 2.5ft (0.7m), 8s period, SE swell with 60 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 0.7m 8s and forecast to arrive on Tuesday (Aug 18) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Aug 17) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Tue 18th Aug) | 2.5ft (0.7m) 8s |
Table - best surf conditions forecast for Coastguard Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what we’ve got for the next couple of weeks.
Well, I’ll be honest with you, it’s looking pretty bleak out there for the whole 16-day window. We’ve got one spot on the map, Coastguard Beach, but the ocean just isn’t playing ball. For the first week, through to around the 22nd of August, the swell is tiny – we’re talking knee-high dribble at best, with swell heights barely reaching 3 ft. Combined wave energy is consistently weak, hanging below 60 (moderate wave energy), and the periods are short and choppy. The wind is almost always a problem, too – cross-shore, cross-onshore, and generally messy. There’s nothing worth paddling out for.
We do see a shift in the pattern kicking off Sunday the 23rd of August. The swell drops right off to just 0.7 ft, but we get a glimpse of some proper glassy conditions on the morning of the 23rd, with a gentle southerly breeze. It’s flat, but it’s clean. The swell direction comes from the east, with a period of 12 seconds – that’s a touch of proper groundswell energy, but with no height to work with, it’s nothing more than a pretty picture.
From the 24th of August right through to the end of the month, it’s the same story: tiny surf, mostly onshore or cross-shore winds, and no real energy. Even when the wind cleans up, like on the 28th of August with a clean cross-offshore breeze, the swell is barely 2 ft. The water temp’s sitting at about 71° on the 16th, which is a touch warmer than normal for the time of year.
Overall, there are zero standout days. The whole forecast is a bust for surf. For a beach setup like Coastguard, with this kind of weak swell and messy wind, honestly, this looks more like a kitesurfer’s scene than a surfer’s. Sometimes you get a blank run like this; it’s just one of those periods. Forecasts can always change, but for now, I’d leave the board in the car.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon morning. Warm (max 26°C on Wed morning, min 19°C on Tue afternoon). Winds decreasing (fresh winds from the SSE on Mon afternoon, calm by Tue night). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Thu afternoon. Warm (max 27°C on Wed afternoon, min 18°C on Thu afternoon). Winds decreasing (fresh winds from the SSW on Wed afternoon, light winds from the SW by Thu afternoon). | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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) | S 3 | E 8 | S 4 | SSE 4 | ESE 5 | SE 8 | ESE 7 | ESE 7 | ESE 6 | ESE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | E 8 | E 7 | E 7 | E 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 4 | 1 | 21 | 32 | 24 | 60 | 37 | 30 | 26 | 25 | 15 | 18 | 17 | 22 | 23 | 22 | 10 | 10 | 9 | 13 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | cross | cross | off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 2:46PM2.99m | 3:10AM2.83m | 3:32PM2.89m | 4:00AM2.64m | 4:19PM2.78m | 4:52AM2.46m | 5:08PM2.66m | 5:47AM2.31m | 6:01PM2.56m | 6:46AM2.21m | 6:57PM2.51m | 7:46AM2.18m | 7:54PM2.50m | |||||||
Low Tide | 9:00PM0.32m | 9:18AM0.43m | 9:50PM0.44m | 10:04AM0.62m | 10:42PM0.56m | 10:51AM0.79m | 11:37PM0.68m | 11:42AM0.93m | 00:34AM0.76m | 12:38PM1.01m | 1:34AM0.80m | 1:35PM1.04m | 2:31AM0.78m | |||||||
 |  |  |  | | | | |  | |  |  |  | | | | | | |  | |
 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — |
 | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:32 | — | — | 7:30 | — | — | 7:30 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | 2 | 7 | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 20 | 21 | 21 | 21 | 20 | 21 | 26 | 27 | 24 | 24 | 20 | 20 | 19 | 19 | 19 | 18 | 19 | 18 |
Feels °C | 20 | 19 | 18 | 21 | 22 | 21 | 19 | 23 | 26 | 25 | 22 | 25 | 19 | 20 | 15 | 15 | 16 | 16 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | — | — | ESE 5 | SE 8 | ESE 7 | ESE 7 | ESE 6 | ESE 7 | ESE 6 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | E 8 | E 7 | E 7 | ESE 7 |
| kJ | 1 | 1 | — | — | 24 | 60 | 37 | 30 | 26 | 25 | 15 | 18 | 17 | 22 | 23 | 22 | 10 | 10 | 9 | 9 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SE 8 | — | SSW 7 | NNE 4 | ESE 8 | — | E 8 | SW 4 | — | E 15 | E 15 | E 14 | E 14 | SE 4 | ESE 4 | ESE 4 |
| kJ | — | — | — | — | 9 | — | 9 | 1 | 7 | — | 5 | 1 | — | 4 | 4 | 4 | 4 | 1 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 8 | — | — | S 6 | — | — | ESE 9 | E 8 | S 5 | S 5 | E 13 | E 13 | E 13 |
| kJ | — | — | — | — | — | — | — | 11 | — | — | 1 | — | — | 8 | 1 | 2 | 2 | 3 | 3 | 13 |
Wind waves Height (m) Direction Period (s) | S 3 | S 4 | S 4 | SSE 4 | — | N 3 | N 4 | — | SSW 6 | SSW 3 | SW 3 | — | — | — | NNE 4 | NNE 4 | NE 4 | NE 3 | NNE 3 | — |
| kJ | 4 | 18 | 21 | 32 | — | 8 | 6 | — | 16 | 6 | 5 | — | — | — | 16 | 13 | 4 | 2 | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2745 | 137 | 308 | 139 | 66 | 66 | 66 | 10 | 17 | 69 | 132 | 10 | 132 | 10 | 167 | 534 | 129 | 482 | 313 | 167 |
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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