Surf Forecasts:
Coastguard Beach surf forecast from 21 Aug 2026:
- Most powerful swell: Saturday 22 Aug, 8AM (local time) - 4ft (1.2m), 5s period, E swell with 77 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 Saturday (Aug 22) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Aug 25) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Sat 22nd Aug) | 4ft (1.2m) 5s |
Table - best surf conditions forecast for Coastguard Beach over the next 16 days.
The Lowdown
Alright, this is a tough one to call. Let's be straight with you. For the next 16 days, everything out there is rated as poor surf conditions. We're looking at a long stretch of tiny, weak waves and messy wind, so don't get your hopes up for anything rideable.
The forecast starts with Friday, August 21st, and it's not a pretty picture. Early morning brings a tiny 3ft swell from the ENE with a pathetic 4-second period. The combined wave energy is a weak 29, and with a 16 mph cross-onshore wind, it's just choppy and blown out. It stays small and messy all through Friday and Saturday.
We do see a bit of a pattern shift from Saturday afternoon, August 22nd, through to the end of the month. The wind swings offshore or cross-offshore, cleaning up the surface, but the swell stays tiny. You'll see clean, glassy conditions, but the waves are barely 2ft to 2ft and the energy is low (28 to 64). It's a flat spell, pure and simple. This clean, flat period stretches right through to the end of August.
Into the first week of September, there's a minor bump. On Monday, September 1st, we see a 4ft swell from the SSE with a 5-second period, but the energy is still only 88. The wind is a cross-offshore 16 mph, so it'll be clean, but the waves are just too short-period and weak to get excited about. The same goes for a 4ft pulse on Friday, September 4th, and a 4ft one on September 5th—bigger in height, but still rubbish.
There are no standouts here. The only break on the map is Coastguard Beach, a consistent, exposed beginner spot, but there's just nothing to recommend. The combined swell energy rarely breaks 100, and the longest period we see is a measly 12 seconds, which is not enough to create any meaningful waves. For the whole 16-day window, it's a flat, wind-affected washout. This is one of those periods where you might as well tune up your board and wait for the next forecast.
This setup looks more interesting for a kite session than a paddle session, to be honest.
Rusty
Short Range ForecastHeavy rain (total 38mm), heaviest during Fri morning. Warm (max 25°C on Thu night, min 18°C on Fri morning). Winds decreasing (fresh winds from the NNW on Thu night, calm by Sat night). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 25°C on Mon morning, min 19°C on Tue morning). Wind will be generally light. | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 | ENE 4 | E 8 | E 4 | E 5 | E 5 | E 5 | SE 6 | SE 6 | SE 6 | SSE 7 | SE 7 | SE 5 | SE 6 | E 6 | E 11 | SSW 4 | ESE 8 | ESE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 36 | 21 | 34 | 38 | 58 | 25 | 14 | 15 | 31 | 17 | 25 | 11 | 4 | 5 | 3 | 2 | 4 | 7 | 11 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-on | cross |
High Tide | 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 | 9 | 10 | 3 | 5 | 1 | — | 3 | 6 | 1 | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 19 | 18 | 19 | 19 | 20 | 21 | 23 | 24 | 23 | 25 | 25 | 24 | 22 | 24 | 23 | 20 | 21 | 21 |
Feels °C | 25 | 17 | 16 | 17 | 17 | 22 | 23 | 24 | 24 | 24 | 25 | 21 | 21 | 19 | 21 | 19 | 20 | 21 | 20 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | — | E 8 | S 6 | S 5 | E 5 | E 5 | ESE 5 | E 12 | SE 6 | SSE 7 | SE 7 | SE 5 | NNW 4 | E 6 | SE 5 | SSW 4 | ESE 8 | ESE 7 |
| kJ | 30 | — | 34 | 1 | 5 | 25 | 14 | 8 | 11 | 17 | 25 | 11 | 4 | 2 | 3 | 1 | 4 | 7 | 11 |
Swell 2 Height (m) Direction Period (s) | S 5 | E 15 | S 5 | E 14 | E 13 | NNE 4 | NNE 4 | NNE 4 | — | ENE 6 | E 6 | E 6 | E 6 | SE 6 | SE 5 | E 6 | ESE 5 | E 5 | S 6 |
| kJ | 2 | 4 | 1 | 14 | 14 | 3 | 3 | 2 | — | 8 | 7 | 6 | 3 | 5 | 1 | 1 | 3 | 2 | 6 |
Swell 3 Height (m) Direction Period (s) | E 15 | E 14 | E 14 | SE 14 | SE 13 | E 13 | E 8 | E 12 | ESE 12 | E 12 | E 12 | E 12 | S 6 | E 6 | E 11 | E 11 | E 10 | E 12 | E 12 |
| kJ | 4 | 4 | 4 | 7 | 7 | 3 | 5 | 11 | 14 | 11 | 11 | 3 | 1 | 2 | 2 | 2 | 2 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | NNE 4 | ENE 4 | E 4 | E 4 | E 5 | — | — | SE 6 | SE 6 | SSW 4 | — | SW 4 | SW 4 | NW 4 | SW 4 | SW 4 | — | S 4 | — |
| kJ | 36 | 21 | 25 | 38 | 58 | — | — | 15 | 31 | 8 | — | 10 | 5 | 3 | 18 | 13 | — | 4 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 132 | 477 | 2745 | 139 | 808 | 10 | 17 | 17 | 10 | 10 | 10 | 136 | 132 | 132 | 929 | 66 | 477 | 829 | 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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