Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 1 am 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
20.3° C
0.9° 

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 (16 Aug):

  • Morning surf: Morning surf (16 Aug, local time) - 1ft (0.3m), 9s period with SE swell.
  • Afternoon surf: Afternoon surf (16 Aug, local time) - 0.5ft (0.2m), 9s period with ESE swell.
  • Evening surf: Evening surf (16 Aug, local time) - 2.5ft (0.8m), 4s period with SSE swell.

The current surf forecast for Costellos at 5AM is: 0.3m 9s primary swell from a Southeast direction (forecast issued at 01:00am August 16). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (16 Aug)1ft (0.3m)9s
Afternoon (16 Aug)0.5ft (0.2m)9s
Evening (16 Aug)2.5ft (0.8m)4s

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


Short Range Forecast

Moderate rain (total 15mm), heaviest on Mon afternoon. Warm (max 23°C on Sun night, min 16°C on Sun morning). Wind will be generally light.

Sunday
16
Monday
17
Tuesday
18
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)
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.2
ESE
9
0.3
SE
9
0.8
SSE
4
1.1
S
5
1
S
5
0.9
SSE
5
0.9
S
5
0.9
S
5
0.9
S
5
0.8
SSE
4
0.7
SSE
4
0.8
SSE
4
0.7
SE
5
0.7
SE
5
0.6
SE
5
0.6
SE
5
0.6
SSE
8
1
SE
8
1
SE
8
0.9
SE
8
Wave Graph
Metric surfscale
Energy kJ
12
12
12
12
8
12
19
57
50
42
40
36
34
27
18
21
23
24
20
16
47
126
120
99
Wind (km/h)
10
N
10
NNW
5
N
5
ESE
15
ESE
20
SE
20
S
20
SSW
20
SSW
15
S
15
SSW
15
S
15
S
10
S
10
SE
10
SE
5
E
10
NE
10
NNE
15
NE
15
NE
15
ENE
10
E
10
ENE
Wind State
cross
cross-off
cross
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross
cross-off
cross
cross
cross
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
High Tide
2:09AM3.52m
2:34PM3.49m
2:58AM3.32m
3:20PM3.38m
3:47AM3.10m
4:07PM3.23m
Low Tide
8:21AM0.28m
8:47PM0.35m
9:06AM0.47m
9:37PM0.49m
9:52AM0.68m
10:28PM0.64m
clear
clear
clear
part cloud
clear
cloud
cloud
part cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
part cloud
cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:44
7:43
7:40
 mm
1
1
1
2
4
3
2
1
Temp °C
19
17
16
19
21
21
23
22
21
20
19
19
19
19
20
20
19
19
19
19
20
19
18
18
Feels °C
17
15
15
18
19
19
21
20
19
20
19
19
20
20
22
22
21
20
20
20
21
19
18
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.


Nearest locationNearest