Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 1 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 (0.1m), 9s period with SE swell.

The current surf forecast for Costellos at 7AM is: 0.3m 4s primary swell from a South-southeast direction and 0.1m 9s secondary swell from a Southeast direction (forecast issued at 01:00am August 11). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be 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 (0.1m)9s

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


Short Range Forecast

Light rain (total 6mm), mostly falling on Thu night. Warm (max 30°C on Tue afternoon, min 19°C on Tue night). Wind will be generally light.

Tuesday
11
Wednesday
12
Thursday
13
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
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
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)
0.1
SE
10
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
11
0.1
E
15
0.1
E
14
0.1
E
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.4
S
4
0.1
SE
14
0.2
ESE
8
0.1
SE
14
0.1
SE
14
0.1
SE
13
0.5
S
3
0.2
ESE
10
Wave Graph
Metric surfscale
Energy kJ
4
4
3
3
3
3
3
3
4
4
4
8
8
8
8
8
8
8
8
8
8
7
7
9
Wind (km/h)
10
SW
15
WSW
15
W
20
WNW
20
NW
15
NW
10
NW
10
NW
10
NW
10
NW
10
WNW
5
NNW
10
SE
15
S
10
SSW
5
W
10
WNW
10
WNW
5
WNW
5
SSE
15
SSE
20
SSE
15
S
20
SW
Wind State
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
cross
cross-off
off
cross-off
cross-off
cross-off
cross
cross-on
cross
cross
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
rain showers
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
cloud
cloud
part cloud
cloud
part cloud
clear
clear
clear
cloud
thunderstorm
thunderstorm
thunderstorm
<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
1
2
3
1
Temp °C
22
20
23
27
29
30
25
24
21
19
20
25
26
23
23
23
22
20
21
25
23
22
21
20
Feels °C
23
20
23
24
25
27
24
23
20
17
19
24
24
21
23
23
21
19
21
24
21
20
22
20
  • 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.


Nearest locationNearest