Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 1 am 17 Oct 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
13.6°C
0.7° 

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 (17 Oct):

  • Morning surf: Morning surf (17 Oct, local time) - 1.5ft (0.5m), 8s period with SE swell.
  • Afternoon surf: Afternoon surf (17 Oct, local time) - 1.5ft (0.4m), 8s period with SE swell.
  • Evening surf: Evening surf (17 Oct, local time) - 2.5ft (0.7m), 4s period with N swell.

The current surf forecast for Costellos at 6AM is: 0.6m 7s primary swell from a South-southeast direction and 0.1m 4s secondary swell from a Southwest direction (forecast issued at 01:00am October 17). An open ocean swell of 0.7m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (17 Oct)1.5ft (0.5m)8s
Afternoon (17 Oct)1.5ft (0.4m)8s
Evening (17 Oct)2.5ft (0.7m)4s

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


Short Range Forecast

Mostly dry. Mild temperatures (max 9°C on Sun afternoon, min 4°C on Sat night). Winds decreasing (fresh winds from the NW on Sat afternoon, calm by Sun night).

Saturday
17
Sunday
18
Monday
19
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)
0.8
SSE
7
0.7
SSE
7
0.6
SSE
8
0.5
SE
8
0.4
SE
8
0.4
SE
8
0.7
N
4
0.3
SE
8
0.8
NNE
5
0.4
NE
6
0.4
NE
5
0.2
ENE
5
0.2
ENE
4
0.2
E
4
0.1
SE
9
0.4
SE
3
0.1
SE
10
0.3
ESE
4
0.2
ESE
10
0.4
ESE
5
0.4
ESE
10
1
ESE
10
1.5
ESE
11
1.9
ESE
11
Wave Graph
Metric surfscale
Energy kJ
56
46
40
31
16
16
12
10
27
11
7
3
3
3
3
3
4
4
10
9
40
200
480
878
Wind (km/h)
30
WNW
25
NW
25
NW
25
NW
30
NW
25
NNW
15
NW
10
NNW
10
NW
10
NNW
5
NNW
5
WNW
10
SE
15
SE
10
SSE
5
S
0
NW
5
NNW
10
N
15
ENE
15
ENE
20
NE
20
NE
25
NNE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
cross-on
cross
cross
glassy
cross-off
cross
cross-on
on
cross-on
cross-on
cross
High Tide
4:20AM2.68m
4:27PM2.90m
5:15AM2.60m
5:22PM2.81m
6:13AM2.58m
6:21PM2.77m
Low Tide
10:14AM1.14m
10:59PM0.89m
11:09AM1.22m
11:55PM0.96m
12:09PM1.23m
cloud
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
6:58
—
—
—
—
—
—
—
6:58
—
—
—
—
—
—
—
7:00
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
5:58
—
—
—
—
—
—
—
5:55
—
—
—
—
—
—
—
5:53
—
—
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
10
8
7
7
8
8
6
4
4
4
4
6
9
8
8
8
8
7
7
8
9
9
9
9
Feels °C
3
1
1
0
-1
1
0
-1
0
0
0
3
5
3
4
5
6
4
4
4
5
5
4
3
  • 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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