Coastguard Beach Surf Break

Lat Long: 41.83° N 69.95° W

Coastguard Beach Surf Forecast and Surf Report

Issued: 7 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Coastguard Beach sea temperature is
21.7° C
1.5° 

Coastguard Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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 39 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-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Wednesday (Aug 19) at 5PM.

Wave TypeTime (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

Alright, Rusty here. Let’s take a look at what’s happening at Coastguard Beach.

Honestly, mate, it’s a pretty tough stretch ahead. The whole 16-day window is a bit of a write-off for any decent surf. There’s really nothing to get excited about. The first surf recommendation pops up on Tuesday the 18th of August, but it’s not a pretty picture. We’re looking at tiny, weak swell with poor conditions right from the start.

Tuesday morning the 18th sees a weak 1 ft SE swell with a short 8-second period, and the combined wave energy is a measly 30 (weak). The wind is a cross-on from the NNE at 12 mph, and the water temp is a touch warmer than average at 71°. It’s choppy and messy – not worth paddling out for.

Wednesday the 19th is cleaner with some offshore wind, but the swell is still tiny at 1 ft, and the period drops to a pathetic 6 seconds. Wave energy is even lower (19 and 15). It’s clean but just not surfable.

The pattern continues right through the next week. Swell heights barely nudge past 2 ft, and periods stay short. The wind flips around from onshore to cross-off, but the lack of any real energy is the killer. There is a little bump of 3 ft swell on Friday the 28th of August, coming from the NNE with a 5-second period. The combined energy hits 100 (moderate) in the morning and 141 (moderate) in the afternoon. But the wind is a fresh cross-onshore at 19 mph, making it lumpy and messy. It’s a bad combo – small, weak, wind-affected junk.

The biggest pulse of the whole forecast hits on Sunday the 30th of August. The swell height is only 2 ft to 3 ft, but the period jumps to a very long 16 seconds coming from the E. The combined energy rockets up to 470 (strong). Sounds good on paper, but with a howling near gale cross-shore wind at 34 mph turning into a strong breeze at 28 mph, the ocean will be a complete washing machine. For a beach break like Coastguard, that long period groundswell will break straight and get torn apart by the wind. This setup looks far more interesting for kite surfing than paddle surfing. Definitely not for a beginner, and not even worth it for most.

We then limp through to the 2nd of September with tiny, weak swell and clean but useless conditions.

There’s no standout day here, no hidden gem. The best on offer would be that Wednesday the 19th if you just want to sit on a board in clean, small conditions, but you won’t catch a wave. And that Sunday the 30th has the energy, but the wind ruins it completely.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Wed morning. Warm (max 25°C on Wed afternoon, min 20°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 22mm), heaviest during Sat night. Warm (max 22°C on Fri afternoon, min 18°C on Sat afternoon). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SE
8
0.5
SE
8
0.5
ESE
7
0.4
ESE
6
0.3
ESE
6
0.4
ESE
6
0.4
ESE
7
0.4
ESE
7
0.4
ESE
7
0.4
ESE
8
0.7
NE
4
0.3
E
8
0.7
ENE
4
0.8
E
5
0.6
ENE
5
0.2
E
12
0.4
ENE
4
0.2
E
12
0.5
SE
7
0.4
SE
7
0.4
SE
6
Wave Graph
Metric surfscale
Energy kJ
23
29
26
16
8
15
17
18
18
22
19
11
17
27
17
13
6
11
21
16
10
Wind (km/h)
20
NNE
15
NNE
5
S
15
SSW
25
SSW
15
SW
10
W
10
N
10
WSW
5
NNE
15
NE
10
E
20
E
20
ENE
5
NNE
5
S
15
S
15
SW
25
W
20
SW
10
NNW
Wind State
cross-on
cross
cross
cross-off
cross-off
cross-off
off
cross
off
cross
cross-on
on
on
on
glassy
glassy
cross
cross-off
off
cross-off
cross-off
High Tide
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
9:33AM2.27m
9:38PM2.62m
Low Tide
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
3:23PM0.95m
4:08AM0.64m
part cloud
clear
clear
rain showers
clear
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
light rain
heavy rain
light rain
light rain
rain showers
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:52
5:52
5:54
5:54
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:36
7:34
7:32
7:30
7:30
7:28
7:25
 mm
1
2
12
1
3
4
Temp °C
20
21
22
23
25
24
25
23
22
21
22
20
20
20
20
20
21
22
22
25
23
Feels °C
20
22
24
24
24
24
26
23
23
22
22
20
18
18
21
24
22
23
20
23
22
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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