Coastguard Beach Surf Break

Lat Long: 41.83° N 69.95° W

Coastguard Beach Surf Forecast and Surf Report

Issued: 1 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Coastguard Beach sea temperature is
21.5° C
1.2° 

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 17 Aug 2026:

  • Most powerful swell: Tuesday 18 Aug, 5PM (local time) - 2.5ft (0.8m), 8s period, ESE swell with 75 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 0.8m 8s and forecast to arrive on Tuesday (Aug 18) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Aug 23) at 11PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5PM (Tue 18th Aug)2.5ft (0.8m) 8s

Table - best surf conditions forecast for Coastguard Beach over the next 16 days.


The Lowdown

G’day, Rusty here. Let’s cut to the chase: the next couple of weeks at Coastguard Beach are looking flat-out disappointing. I’ve gone through the whole 16-day run, and there’s no proper surf on offer. It’s a long stretch of tiny, weak waves and iffy wind. You might be better off with a kiteboarding rig than a surfboard for the next while.

Starting Monday the 17th, we’ve got nothing. A bit over 2 feet of slop at 4 seconds, with a moderate cross breeze and some rain. The water’s sitting around 71°, which is a touch warmer than usual for this time of year. Nothing crazy, but you can shed a layer.

Tuesday the 18th stays poor. A little more energy (86), but still under 3 feet, and the period is short. The afternoon cleans up a bit with a cross-off wind, but the waves are still only 3 feet and weak. Not worth the drive.

Wednesday the 19th and Thursday the 20th are the flattest. We’re talking 1 feet or less, with energy readings in the teens and twenties. Thursday afternoon goes glassy, but there’s nothing to ride. It’s a complete mill pond.

Friday the 21st through Sunday the 23rd don’t get any better. Still tiny, all under 2 feet, with cross-onshore breezes and chop. Sunday the 23rd sees a longer period at 12 seconds, but the height is so small—0.6 to 1 foot—it’s not surfable.

Monday the 24th is a tease: a fresh offshore wind (30 km/h) and clean conditions, but again only 0.6 feet of swell. Tuesday the 25th finally sees a pulse—4 to 4 feet—but the period is a shocking 5 seconds. That’s pure wind chop, messy and unorganised. The energy is still low, so it’s not doing anything.

Now, here’s the one event that might get your attention, but it’s a week and a half out. On Wednesday the 26th of August, the swell jumps to 7 feet from the SSW, with a period of 8 seconds and the combined energy reading hits a massive 673. That’s a real surge of power. The trouble is, the wind is cross-onshore (20 km/h) and it’s going to be lumpy and fairly choppy. For a beginner, 7 feet is a no-go. For the experienced crew, it could be a challenge, but the cross-chop will make it a battle. It’s the biggest swell of the window, but the conditions aren’t making it easy. Still, if you’re an expert and you’re desperate, that’s your only real window.

After that, Thursday the 27th falls away quickly—1 to 1 feet, onshore, and the long period just means you’ll see some lines but nothing to ride.

Then Friday the 28th throws another interesting one: 3 to 3 feet from the ESE, with a period of 13-14 seconds and energy around 280. That’s proper groundswell, but it’s also cross-onshore at 25 km/h, so it’ll be chopped up. A beach break with that sort of long-period energy can break too straight anyway. Probably not the best.

The last few days, Saturday the 29th through Tuesday the 1st of September, are all under 2 feet again, with fresh onshores and occasional clean windows when the wind swings offshore, but there’s just no swell to back it up.

So, summing it up: if you’re a beginner, don’t even bother. For the experts, keep an eye on Wednesday the 26th of August—it’s the only day with size, but be ready for a rough, bumpy session. Otherwise, this is a long, flat, frustrating stretch. It’s a dry spell, but the ocean always turns around. Stay keen.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Mon afternoon. Warm (max 25°C on Wed afternoon, min 19°C on Tue night). Winds decreasing (fresh winds from the SSE on Mon afternoon, calm by Wed morning).

Days 4-6 Weather Summary

Light rain (total 9mm), mostly falling on Thu night. Warm (max 26°C on Thu morning, min 18°C on Thu night). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
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)
0.7
S
4
0.9
SSE
4
0.3
SE
9
0.6
S
7
0.8
ESE
8
0.6
ESE
7
0.4
ESE
6
0.4
ESE
6
0.4
SE
8
0.4
SE
6
0.3
E
8
0.3
E
9
0.4
ESE
8
0.3
ESE
8
0.3
ESE
8
0.3
E
8
0.3
E
7
0.2
E
13
0.3
ESE
12
0.2
E
12
0.2
E
12
Wave Graph
Metric surfscale
Energy kJ
14
33
14
43
75
37
12
16
14
9
11
13
22
13
12
10
10
13
28
11
11
Wind (km/h)
25
S
30
SSE
10
E
20
N
25
NNW
15
N
10
S
25
S
15
WSW
5
SW
5
WSW
15
N
15
NE
10
ENE
0
SW
15
SE
10
SSE
5
WSW
15
SSE
15
SSE
20
W
Wind State
cross
cross-on
on
cross
cross-off
cross
cross
cross
cross-off
cross-off
glassy
cross
cross-on
cross-on
glassy
cross-on
cross-on
glassy
cross
cross
off
High Tide
3:32PM2.89m
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
9:18AM0.43m
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
cloud
light rain
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
part cloud
cloud
part cloud
part cloud
light rain
light rain
cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:50
5:50
5:52
5:52
5:54
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:37
7:36
7:34
7:32
7:30
7:30
7:28
 mm
1
1
2
4
1
1
1
Temp °C
20
20
21
21
21
20
21
25
24
26
24
23
19
20
20
21
21
20
21
24
24
Feels °C
16
17
21
22
20
21
22
24
23
28
25
25
19
21
21
21
20
22
23
25
22
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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