Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 1 pm 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
16.5°C
0.1° 

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 (18 Sep):

  • Morning surf: Morning surf (18 Sep, local time) - 1.5ft (0.5m), 7s period with ESE swell.
  • Afternoon surf: Afternoon surf (18 Sep, local time) - 1.5ft (0.4m), 7s period with ESE swell.
  • Evening surf: Evening surf (18 Sep, local time) - 1.5ft (0.4m), 7s period with ESE swell.

The current surf forecast for Costellos at 5PM is: 0.4m 7s primary swell from a East-southeast direction and 0.2m 12s secondary swell from a East-southeast direction (forecast issued at 01:00pm September 18). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (18 Sep)1.5ft (0.5m)7s
Afternoon (18 Sep)1.5ft (0.4m)7s
Evening (18 Sep)1.5ft (0.4m)7s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Sun night. Warm (max 25°C on Fri afternoon, min 10°C on Sat morning). Wind will be generally light.

Fri
18
Saturday
19
Sunday
20
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)
0.5
ESE
7
0.4
ESE
7
0.4
ESE
7
0.4
ESE
7
0.4
ESE
7
1.1
NE
5
1.1
NE
5
1
NE
5
1
NE
5
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
SE
8
0.4
SE
8
0.3
ESE
11
0.3
ESE
11
0.4
SE
11
0.2
ESE
11
0.4
ESE
8
Wave Graph
Metric surfscale
Energy kJ
28
19
15
18
19
61
66
50
54
24
24
23
23
23
15
16
23
22
30
11
28
Wind (km/h)
10
NNW
5
NW
15
NW
20
NW
10
N
15
NNE
15
NNE
15
NNE
10
ENE
15
ESE
15
SSE
15
SSE
10
SSW
10
SW
5
WSW
5
WSW
15
SSE
15
S
10
S
10
SE
5
ENE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-on
cross-on
cross-on
cross
cross-off
cross-off
off
glassy
cross
cross
cross
cross-on
cross-on
High Tide
5:06PM2.92m
5:53AM2.57m
6:04PM2.84m
6:54AM2.54m
7:04PM2.82m
Low Tide
10:50AM1.12m
11:39PM0.91m
11:47AM1.21m
00:39AM0.97m
12:47PM1.23m
clear
clear
clear
clear
cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
cloud
cloud
cloud
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:47
6:45
6:44
 mm
1
3
3
Temp °C
23
24
25
20
16
14
12
10
12
14
13
13
13
13
12
11
15
14
13
11
11
Feels °C
22
23
21
16
13
10
8
5
9
10
9
9
10
11
10
9
12
11
11
9
10
  • 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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