Surf Break

Lat Long: 42.95° N 70.78° W

Costellos 48 hour detailed Surf Forecast

Issued: 7 pm 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 (18 Oct):

  • Morning surf: Morning surf (18 Oct, local time) - 1ft (0.3m), 5s period with NE swell.
  • Afternoon surf: Afternoon surf (18 Oct, local time) - 0.5ft (0.1m), 8s period with SE swell.
  • Evening surf: Evening surf (18 Oct, local time) - 0.5ft (0.1m), 8s period with SE swell.

The current surf forecast for Costellos at 2AM is: 0.3m 8s primary swell from a Southeast direction (forecast issued at 07:00pm October 17). An open ocean swell of 0.4m 5s is not directed at the surf break, a second open ocean swell of 0.2m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (18 Oct)1ft (0.3m)5s
Afternoon (18 Oct)0.5ft (0.1m)8s
Evening (18 Oct)0.5ft (0.1m)8s

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


Short Range Forecast

Mostly dry. Very mild (max 14°C on Tue afternoon, min 3°C on Sat night). Wind will be generally light.

Sat
17
Sunday
18
Monday
19
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SE
8
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.2
SSE
8
0.3
NE
5
0.2
ENE
4
0.1
E
11
0.1
E
11
0.1
SE
8
0.4
SE
3
0.4
SSE
3
0.4
SE
3
0.2
ESE
10
0.2
ESE
10
0.4
SE
5
0.5
SE
10
0.9
ESE
9
1.2
ESE
10
Wave Graph
Metric surfscale
Energy kJ
16
10
10
11
7
4
3
3
3
3
3
4
4
10
10
10
44
151
261
Wind (km/h)
25
NW
20
NW
15
NNW
10
NNW
10
WNW
5
NW
10
SSW
10
S
10
SSE
15
S
10
S
5
SW
5
NW
5
NNW
10
NE
15
ENE
15
E
15
NNE
15
NNE
Wind State
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-on
on
on
cross-on
cross-on
High Tide
4:27PM2.90m
5:15AM2.60m
5:22PM2.81m
6:13AM2.58m
6:21PM2.77m
Low Tide
10:59PM0.89m
11:09AM1.22m
11:55PM0.96m
12:09PM1.23m
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>
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6:58
—
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—
—
—
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7:00
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:58
—
—
—
—
—
—
—
5:55
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—
—
—
—
5:53
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 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
8
5
3
3
4
4
6
10
10
9
8
8
7
7
8
9
9
9
8
Feels °C
0
-2
-3
-2
0
0
2
6
6
4
4
5
4
4
5
5
5
5
4
  • 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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