Surf Forecasts:
Coastguard Beach surf forecast from 18 Aug 2026:
- Most powerful swell: Tuesday 18 Aug, 2PM (local time) - 2ft (0.6m), 8s period, SE swell with 40 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 0.6m 8s and forecast to arrive on Tuesday (Aug 18) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Tuesday (Aug 25) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Tue 18th Aug) | 2ft (0.6m) 8s |
Table - best surf conditions forecast for Coastguard Beach over the next 16 days.
The Lowdown
G’day, it’s Rusty here. Let’s be straight with you—this stretch of coast is having a proper quiet spell. We’ve got a solid run of days with barely a ripple worth paddling for, and honestly, it’s a bit of a bummer. The first week and a bit is looking almost completely flat, with tiny, weak waves and a lot of onshore junk. There’s a long, empty stretch of nothing from the start right through to the morning of Monday, August 31st, so if you’re keen for a surf this week, you might wanna find something else to do.
The only time the ocean even wakes up is around Friday, August 28th, when we see a bump of southerly swell push through, getting up to 4.6ft. But even then, the wind’s all over the shop, and the energy readings are only moderate, around 159 in the morning, dropping off by the arvo. It’s not really worth getting excited about. The setup is mostly exposed beach, so it’s going to be a bit of a mess with the cross-shore winds.
Now, here’s the one that actually matters. Fast forward to Monday morning, August 31st. That’s when we finally see something worth getting out of bed for. The swell direction swings around to the northeast, pushing in at 4.6ft, with moderate energy hitting 218—that’s the strongest reading we see in the whole 16 days. The wind is light and offshore from the southwest, which is exactly what you want. It’ll be clean, glassy, and have a bit of shape to it. The period is short, around 6 seconds, so it’s not a groundswell, but it’s enough to give you a few fun ones.
Coastguard Beach—that’s the spot to be on that Monday morning. It’s a consistent, exposed beach break, but with that offshore wind, it’ll be holding up nicely. Crowds are sometimes an issue here, so if you can get in early, you’ll have it more to yourself. Water temp’s about average for this time of year, so no worries there.
That’s your standout. Tuesday, September 1st has a bit of leftover energy—around 2.6ft from the northeast in the morning—but it’s a step down, and the conditions are just ordinary. After that, it fades away again.
So, look, it’s a long, dry spell, but that Monday morning is your golden window. Set your alarm, get down to Coastguard Beach, and make the most of it before it disappears.
Stay salty.
Short Range ForecastMostly dry. Warm (max 26°C on Wed afternoon, min 20°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 19mm), heaviest on Sun morning. Warm (max 24°C on Thu night, min 18°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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) | SE 5 | SE 8 | SE 8 | SE 7 | SE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | E 8 | E 14 | E 4 | E 5 | E 5 | E 5 | E 6 | E 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 18 | 23 | 38 | 23 | 20 | 13 | 7 | 17 | 9 | 9 | 39 | 12 | 14 | 23 | 27 | 28 | 20 | 15 | 12 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | glassy | cross-off | cross-off | off | cross | on | off | cross-on | cross-on | glassy | on | cross-on | on | cross | cross-off | off |
High Tide | 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 | 8:43AM2.20m | 8:48PM2.55m | |||||||
Low Tide | 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 | 2:31PM1.02m | 3:22AM0.72m | ||||||
 |  |  |  |  | | | | |  |  |  | | | | |  |  | | |
 | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — |
 | 7:37 | — | 7:36 | — | — | 7:34 | — | — | 7:32 | — | — | 7:30 | — | — | 7:30 | — | — | 7:28 | — |
mm | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | 13 | 3 | — |
Temp °C | 21 | 20 | 21 | 21 | 24 | 26 | 25 | 24 | 24 | 24 | 20 | 19 | 20 | 20 | 19 | 20 | 22 | 24 | 21 |
Feels °C | 23 | 20 | 22 | 24 | 25 | 26 | 25 | 25 | 25 | 25 | 20 | 20 | 21 | 20 | 18 | 20 | 23 | 26 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 5 | SE 8 | SE 8 | SE 7 | SE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | E 8 | E 14 | E 13 | E 13 | E 13 | E 12 | E 6 | E 6 |
| kJ | 18 | 23 | 38 | 23 | 20 | 13 | 7 | 17 | 9 | 9 | 39 | 12 | 4 | 14 | 13 | 13 | 11 | 15 | 12 |
Swell 2 Height (m) Direction Period (s) | E 9 | SE 4 | E 4 | NE 4 | NE 4 | E 8 | ESE 8 | — | E 8 | N 3 | E 15 | E 14 | E 14 | SE 13 | SE 13 | E 13 | ESE 12 | SSE 6 | SSE 5 |
| kJ | 1 | 3 | 1 | 2 | 1 | 6 | 7 | — | 1 | 1 | 4 | 4 | 14 | 7 | 7 | 13 | 14 | 4 | 3 |
Swell 3 Height (m) Direction Period (s) | ESE 9 | — | — | ESE 9 | ESE 9 | NE 4 | S 6 | SE 9 | — | E 9 | E 14 | SE 14 | SE 14 | — | SE 9 | SE 8 | E 12 | N 3 | E 12 |
| kJ | 8 | — | — | 8 | 8 | 1 | 7 | 3 | — | 7 | 4 | 8 | 7 | — | 3 | 3 | 12 | 1 | 11 |
Wind waves Height (m) Direction Period (s) | — | NE 4 | NE 4 | — | — | S 3 | SW 3 | — | — | — | ENE 4 | ENE 4 | E 4 | E 4 | E 5 | E 5 | E 5 | — | SSW 4 |
| kJ | — | 4 | 3 | — | — | 3 | 4 | — | — | — | 10 | 10 | 13 | 23 | 27 | 28 | 20 | — | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 66 | 66 | 66 | 10 | 10 | 17 | 10 | 186 | 2417 | 132 | 412 | 514 | 10 | 488 | 568 | 404 | 69 | 10 | 76 |
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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