Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 7 pm 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
17.9°C
0.4° 

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 (12 Sep):

  • Morning surf: Morning surf (12 Sep, local time) - 1ft (0.3m), 9s period with SE swell.
  • Afternoon surf: Afternoon surf (12 Sep, local time) - 0.5ft (0.2m), 10s period with ESE swell.
  • Evening surf: Evening surf (12 Sep, local time) - 1ft (0.3m), 10s period with SE swell.

The current surf forecast for Costellos at 3AM is: 0.3m 11s primary swell from a Southeast direction and 0.2m 6s secondary swell from a South-southeast direction (forecast issued at 07:00pm September 11). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (12 Sep)1ft (0.3m)9s
Afternoon (12 Sep)0.5ft (0.2m)10s
Evening (12 Sep)1ft (0.3m)10s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Sun morning. Warm (max 21°C on Mon afternoon, min 14°C on Fri night). Wind will be generally light.

Fri
11
Saturday
12
Sunday
13
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
SE
10
0.3
SE
10
0.2
ESE
11
0.3
SE
11
0.3
SE
10
0.3
SE
9
0.2
ESE
10
0.2
ESE
10
0.2
ESE
10
0.3
SE
10
0.8
SSE
4
0.8
SSE
4
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
9
0.4
SE
9
Wave Graph
Metric surfscale
Energy kJ
15
17
11
18
17
14
9
9
9
15
24
27
20
17
24
24
23
31
30
Wind (km/h)
15
NW
10
NW
10
N
5
N
5
NW
5
WNW
10
SE
15
SE
20
SE
20
SSE
15
SSW
10
SSW
10
SSW
10
SW
15
S
15
SSE
10
SSE
5
SSW
10
SSW
Wind State
cross-off
cross-off
cross
cross
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
glassy
cross-off
High Tide
00:11AM3.59m
12:33PM3.59m
00:57AM3.50m
1:16PM3.56m
Low Tide
5:59PM0.21m
6:22AM0.21m
6:46PM0.19m
7:05AM0.31m
7:32PM0.24m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
light rain
mod rain
light rain
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
6:59
6:57
 mm
1
8
2
Temp °C
23
20
16
15
14
14
17
18
18
18
18
17
17
17
17
18
18
18
18
Feels °C
18
17
13
13
12
13
15
14
14
16
16
16
16
17
17
18
19
20
19
  • 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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