Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 7 am 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
21.6° C
2.1° 

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


How big are the waves at Costellos today (11 Aug):

  • Morning surf: Morning surf (11 Aug, local time) - 1ft (0.3m), 4s period with SSE swell.
  • Afternoon surf: Afternoon surf (11 Aug, local time) - 0.5ft (0.1m), 9s period with SE swell.
  • Evening surf: Evening surf (11 Aug, local time) - 0.5ft (0.2m), 9s period with ESE swell.

The current surf forecast for Costellos at 1PM is: 0.1m 9s primary swell from a Southeast direction (forecast issued at 07:00am August 11). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (11 Aug)1ft (0.3m)4s
Afternoon (11 Aug)0.5ft (0.1m)9s
Evening (11 Aug)0.5ft (0.2m)9s

Table - waves today at Costellos. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 30°C on Tue afternoon, min 19°C on Wed night). Wind will be generally light.

Tuesday
11
Wednesday
12
Thursday
13
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
0
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
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
SSE
4
0.3
SSE
4
0.1
SE
9
0.1
SE
9
0.1
SE
9
0.2
ESE
9
0.2
ESE
9
0.2
ESE
9
0.1
E
14
0.1
E
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.2
ESE
8
0.1
SE
14
0.1
SE
14
0.1
SE
13
0.1
SE
10
0.2
ESE
10
Wave Graph
Metric surfscale
Energy kJ
4
3
3
3
3
8
8
8
4
4
8
8
8
8
8
8
8
8
8
7
7
4
9
Wind (km/h)
15
WSW
15
W
15
WNW
15
NW
10
NW
10
NNW
5
W
10
NW
10
NW
10
NW
5
ENE
10
SE
10
S
10
SSW
5
WNW
10
NW
10
WNW
10
WNW
0
SSE
10
SE
15
SSE
5
S
10
WNW
Wind State
off
off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
glassy
cross-on
cross
cross-off
cross-off
cross-off
off
off
glassy
cross-on
cross-on
cross
off
High Tide
10:29AM3.26m
10:44PM3.73m
11:22AM3.41m
11:38PM3.78m
12:13PM3.52m
Low Tide
4:16AM0.18m
4:29PM0.44m
5:10AM0.07m
5:24PM0.31m
6:00AM0.01m
6:17PM0.23m
clear
clear
clear
clear
cloud
cloud
part cloud
cloud
clear
clear
clear
cloud
cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:45
5:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:51
7:50
7:47
 mm
Temp °C
20
23
27
30
30
25
23
21
20
20
25
25
24
23
21
20
19
20
24
25
24
23
22
Feels °C
20
23
25
27
28
24
22
20
19
19
25
23
23
22
21
19
18
19
25
24
23
24
21
  • 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
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Costellos surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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