Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 1 pm 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
21.3° C
1.7° 

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 (10 Aug):

  • Morning surf: Morning surf (10 Aug, local time) - 0.5ft (0.1m), 10s period with SE swell.
  • Afternoon surf: Afternoon surf (10 Aug, local time) - 0.5ft (0.2m), 7s period with SSE swell.
  • Evening surf: Evening surf (10 Aug, local time) - 1.5ft (0.4m), 3s period with SSE swell.

The current surf forecast for Costellos at 8PM is: 0.1m 10s primary swell from a Southeast direction and 0.1m 8s secondary swell from a East direction, 0.4m 3s secondary swell from a South-southeast direction (forecast issued at 01:00pm August 10). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (10 Aug)0.5ft (0.1m)10s
Afternoon (10 Aug)0.5ft (0.2m)7s
Evening (10 Aug)1.5ft (0.4m)3s

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


Short Range Forecast

Mostly dry. Warm (max 30°C on Tue afternoon, min 20°C on Tue night). Wind will be generally light.

Mon
10
Tuesday
11
Wednesday
12
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
SE
10
0.2
SSE
7
0.4
SE
3
0.4
SSE
3
0.5
S
3
0.4
SSE
4
0.4
SSE
4
0.3
SSE
4
0.1
SE
9
0.1
SE
9
0.1
SE
9
0.1
SE
9
0.1
E
14
0.1
E
15
0.1
E
14
0.1
E
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.2
SSE
8
0.1
SE
14
Wave Graph
Metric surfscale
Energy kJ
4
4
4
4
6
4
6
4
3
3
3
3
4
4
4
4
8
8
8
8
8
Wind (km/h)
15
SSE
15
SE
15
SE
15
SSE
10
WSW
15
WSW
15
W
20
W
20
WNW
20
NW
15
NW
5
N
5
N
10
NW
10
NW
5
NW
0
ENE
10
SE
15
S
10
SSW
5
NW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross
glassy
cross-off
cross-off
cross-off
glassy
cross-on
cross
cross-off
cross-off
High Tide
9:32AM3.10m
9:47PM3.62m
10:29AM3.26m
10:44PM3.73m
11:22AM3.41m
Low Tide
3:30PM0.59m
4:16AM0.18m
4:29PM0.44m
5:10AM0.07m
5:24PM0.31m
part cloud
clear
clear
cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
cloud
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:51
7:50
 mm
Temp °C
25
26
25
24
24
22
21
23
27
29
30
26
24
23
20
21
25
26
24
23
23
Feels °C
24
24
24
23
25
23
21
22
23
25
27
25
24
22
19
20
25
25
22
22
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
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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