Surf Forecasts:
Coastguard Beach surf forecast from 10 Aug 2026:
- Most powerful swell: Friday 14 Aug, 2AM (local time) - 2ft (0.6m), 4s period, S swell with 13 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 4s and forecast to arrive on Friday (Aug 14) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s 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 | 2AM (Fri 14th Aug) | 2ft (0.6m) 4s |
Table - best surf conditions forecast for Coastguard Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s on offer for the next couple of weeks.
Honestly, it’s a pretty flat run for Coastguard Beach. The whole 16-day window is a real struggle for anything rideable. We’re looking at tiny, weak surf day after day, with the combined energy of all swells directed here barely ticking over – mostly under 100 (weak), just a couple of days nudging into the low triple digits. The water is a touch warmer than usual for this time of year, sitting at 71°F, about 2°F above the norm, which is nice for a paddle but not much else.
The first proper blip of interest shows up around Monday, August 19th in the afternoon. We’ve got a 1ft swell from the ESE with a period of 17 seconds – that’s a very long period groundswell, which usually means better shaped waves, more energy, and longer gaps between sets. The combined energy hits 159 (moderate), which is the most we’ll see. Winds are light and cross-on from the SE, so it’s clean enough but not glassy. *However*, for a beach break like Coastguard, that long period can make waves break a bit too straight and fat. It’s a beginner-friendly spot, and this tiny size is fine for learning, but it’s not going to get anyone excited.
The next little bump is Tuesday, August 25th morning and afternoon, with a 3ft to 3ft swell from the E, but the period is a short 5 to 6 seconds, and the wind is directly onshore from the E and ESE. That’s going to be chopped up and messy. Combined energy is only 56 (weak) and 55 (weak).
So, the standout – if you can call it that – is that Monday the 19th afternoon session. The long period gives it a bit of grunt, but it’s still small and the wind is just okay. The rest of the window is a total write-off for a decent wave. For a spot that’s usually consistent, this is a real bummer of a forecast. Honestly, the setup with the onshore winds and small weak swell might be more interesting for a kite surfer than a paddle surfer on a few of those afternoons, like the 22nd and 25th.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Mon afternoon, min 22°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu afternoon, min 19°C on Fri night). Winds decreasing (fresh winds from the WNW on Fri morning, light winds from the NE by Sat afternoon). | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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) | E 10 | E 9 | SSE 6 | SSW 4 | SSE 6 | S 6 | S 6 | E 14 | E 14 | E 13 | S 4 | SSE 6 | SE 7 | SSE 7 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | E 9 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 2 | 2 | 3 | 7 | 3 | 3 | 2 | 4 | 4 | 3 | 13 | 6 | 2 | 10 | 5 | 6 | 6 | 6 | 1 | 1 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-on | off | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | off | cross-off | cross | cross-off |
High Tide | 9:59PM3.13m | 10:42AM2.77m | 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 | |||||||
Low Tide | 3:41PM0.54m | 4:30AM0.16m | 4:40PM0.41m | 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 | |||||||
 |  |  | | | | | |  | | | | |  | | | | | |  | |
 | — | — | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — |
 | 7:46 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — | — | 7:40 | — | — | 7:39 | — | — | 7:38 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 25 | 27 | 27 | 23 | 24 | 23 | 23 | 25 | 24 | 22 | 22 | 22 | 19 | 21 | 21 | 20 | 22 | 22 |
Feels °C | 25 | 23 | 24 | 26 | 27 | 22 | 22 | 21 | 23 | 23 | 23 | 16 | 16 | 17 | 15 | 19 | 18 | 18 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | SSE 6 | SSW 4 | SW 4 | S 6 | N 3 | S 5 | SSW 4 | E 13 | S 4 | SSE 6 | NNW 4 | SSE 7 | SSE 7 | N 4 | SSE 8 | SSE 8 | E 9 | E 8 |
| kJ | 1 | 1 | 3 | 7 | 2 | 2 | 1 | 2 | 1 | 3 | 13 | 6 | 3 | 10 | 5 | 10 | 6 | 6 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | — | E 9 | E 7 | NNW 3 | SSE 6 | E 7 | S 6 | E 14 | SSE 5 | E 7 | E 13 | WSW 4 | WSW 4 | — | — | SSE 8 | NNE 4 | — | — | — |
| kJ | — | 2 | 1 | 1 | 3 | 1 | 2 | 4 | 3 | 1 | 3 | 2 | 2 | — | — | 6 | 2 | — | — | — |
Swell 3 Height (m) Direction Period (s) | E 10 | S 6 | E 9 | E 7 | NNW 4 | E 8 | E 8 | E 7 | E 14 | E 8 | E 10 | E 10 | SE 7 | E 12 | — | E 12 | — | — | — | — |
| kJ | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 2 | 2 | 2 | 3 | — | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 3 | SSW 4 | WSW 4 | SW 4 | — | N 3 | — | — | — | SSW 4 | — | NW 4 | WSW 5 | NNW 4 | N 4 | — | — | — | SSW 3 | SSW 4 |
| kJ | 2 | 9 | 5 | 24 | — | 3 | — | — | — | 30 | — | 18 | 34 | 34 | 16 | — | — | — | 5 | 24 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 486 | 477 | 205 | 2417 | 614 | 611 | 3458 | 186 | 613 | 2621 | 136 | 852 | 3482 | 990 | 477 | 477 | 241 | 488 | 1156 | 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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