Surf Forecasts:
Coastguard Beach surf forecast from 20 Jul 2026:
- Most powerful swell: Wednesday 22 Jul, 2PM (local time) - 5.5ft (1.7m), 9s period, S swell with 450 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 1.7m 9s and forecast to arrive on Wednesday (Jul 22) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Jul 22) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Wed 22nd Jul) | 5.5ft (1.7m) 9s |
Table - best surf conditions forecast for Coastguard Beach over the next 16 days.
The Lowdown
Alright, let’s look at this. We’re staring down a 16-day window that’s mostly a flat spell. The only break we’ve got is Coastguard Beach, and it’s a tough watch. There’s a big gap of nothing at the start, then a long stretch of weak surf. The water’s about 67°F, which is dead average for the season.
The only real pulse of energy comes on Wednesday, July 22nd. The morning shows a 5ft S swell at 9 seconds, with a combined energy of 306 (moderate). The wind is cross-off from the SW at 22 mph, keeping things clean. But the afternoon is the real deal: the swell hits 5ft from the S, period stretches to 10 seconds, and the energy jumps to 450 (strong). The wind eases to 16 mph from the SW, still cross-off and clean. For a beach break, that’s your window. It’s not perfect, with the swell direction being a little off the optimum SE, but it’s the only solid swell in the whole run. This is the standout. The wind is offshore enough to keep the waves clean, and the consistency is good. It’s not a beginner day though, with the swell pushing over 5ft.
After that, it’s a long slide. Thursday, July 23rd morning has a 3ft SE swell at 9 seconds with 101 energy, but the wind is cross-on from the NE at 9 mph, making it choppy. The afternoon is worse with onshore winds at 12 mph.
The entire second week is a write-off for quality. From Friday, July 25th through to the end, the swell is tiny – mostly 0.7ft to 2ft, with periods under 8 seconds, and the energy is in the single or low double digits (weak). There are a few moments of glassy conditions, like on Monday, July 27th morning and Sunday, August 2nd morning, but with wave heights of 1ft and 0.7ft, it’s barely a ripple. The winds are mostly cross-on or onshore, so even the small bumps are messy.
The only other time the wind works is on Wednesday, July 30th afternoon, with a light cross-off from the WNW at 6 mph, but the swell is a pathetic 0.3ft with 8 energy. Not worth suiting up.
So, straight talk: Wednesday, July 22nd is the only day to pencil in. The afternoon session, with that 5ft S swell at 10 seconds and clean cross-off wind, is the best bet. For the rest of the 16 days, it’s flat, choppy, or tiny. A long, quiet stretch. If the wind picks up with those onshore conditions, it’s more of a kiteboarder’s setup than a surfer’s.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Tue night. Warm (max 24°C on Wed morning, min 20°C on Sun night). Winds increasing (calm on Mon afternoon, strong winds from the SSW by Tue night). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Wed afternoon, min 17°C on Wed night). Winds decreasing (fresh winds from the SW on Wed afternoon, calm by Fri night). | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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) | SE 8 | SSE 8 | SSE 8 | SSE 8 | S 4 | SSE 4 | SE 4 | S 6 | S 9 | S 10 | SSE 10 | SE 9 | SE 8 | ESE 7 | E 4 | SE 8 | SE 7 | ESE 7 | ESE 7 | ESE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 15 | 13 | 13 | 20 | 9 | 16 | 36 | 146 | 306 | 450 | 178 | 99 | 71 | 34 | 18 | 20 | 44 | 36 | 33 | 31 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | on | cross-on | cross-on | cross-on | cross-off | on | cross-on | cross-off |
High Tide | 4:10PM2.88m | 4:32AM2.73m | 5:01PM2.79m | 5:28AM2.54m | 5:52PM2.70m | 6:26AM2.39m | 6:44PM2.63m | 7:24AM2.29m | 7:37PM2.59m | 8:21AM2.24m | 8:29PM2.59m | 9:15AM2.25m | 9:19PM2.62m | |||||||
Low Tide | 10:23PM0.47m | 10:43AM0.50m | 11:19PM0.57m | 11:33AM0.68m | 00:17AM0.65m | 12:25PM0.82m | 1:14AM0.71m | 1:18PM0.92m | 2:11AM0.73m | 2:11PM0.97m | 3:04AM0.71m | 3:03PM0.96m | 3:53AM0.66m | |||||||
 |  | | | |  | |  |  | | | | | | | | |  | |  | |
 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — |
 | 8:09 | — | — | 8:08 | — | — | 8:08 | — | — | 8:07 | — | — | 8:07 | — | — | 8:06 | — | — | 8:05 | — |
mm | — | — | — | — | — | — | — | 13 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 21 | 23 | 22 | 22 | 22 | 22 | 24 | 25 | 25 | 18 | 18 | 17 | 18 | 18 | 19 | 20 | 21 | 20 |
Feels °C | 20 | 20 | 18 | 19 | 19 | 19 | 19 | 20 | 21 | 23 | 25 | 15 | 16 | 14 | 15 | 15 | 17 | 19 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | N 4 | SSE 8 | SSE 8 | N 4 | SE 12 | — | SSW 7 | — | — | — | SSE 10 | SE 9 | SE 8 | S 8 | S 7 | SE 8 | SE 7 | ESE 7 | ESE 7 | ESE 7 |
| kJ | 9 | 13 | 13 | 1 | 5 | — | 11 | — | — | — | 178 | 99 | 71 | 12 | 4 | 20 | 44 | 36 | 33 | 31 |
Swell 2 Height (m) Direction Period (s) | SE 8 | SSE 4 | E 12 | E 12 | E 12 | E 8 | E 8 | — | — | — | — | — | N 3 | — | SSW 7 | S 8 | S 8 | S 7 | N 3 | S 6 |
| kJ | 15 | 1 | 3 | 3 | 3 | 1 | 1 | — | — | — | — | — | 1 | — | 17 | 5 | 5 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | SSW 7 | E 12 | E 12 | — | E 9 | E 12 | — | — | — | — | — | — | N 3 | N 3 | — | — | — | — | SSW 7 | — |
| kJ | 4 | 3 | 3 | — | 2 | 3 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 4 | — |
Wind waves Height (m) Direction Period (s) | — | NNW 4 | N 4 | SSE 8 | S 4 | SSE 4 | SE 4 | S 6 | S 9 | S 10 | NW 3 | N 3 | — | ESE 7 | E 4 | ENE 4 | NNE 3 | N 3 | — | SW 3 |
| kJ | — | 3 | 3 | 20 | 9 | 16 | 36 | 146 | 306 | 450 | 6 | 2 | — | 34 | 18 | 9 | 3 | 3 | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 136 | 66 | 66 | 1924 | 137 | 1148 | 1148 | 69 | 69 | 99 | 99 | 100 | 929 | 66 | 66 | 161 | 2 | 66 | 755 | 17 |
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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