Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Issued: 7 pm 18 Jun 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
16.0° C

1.4°C warmer than normal for this time of year

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 Jun):

  • Afternoon surf: Afternoon surf (18 Jun, local time) - 8ft (2.4m), 6s period with SSE swell.
  • Evening surf: Evening surf (18 Jun, local time) - 6ft (1.8m), 7s period with SSE swell.

The current surf forecast for Costellos at 11PM is: 1.6m 7s primary swell from a South-southeast direction and 0.1m 14s secondary swell from a Southeast direction (forecast issued at 07:00pm June 18). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (18 Jun)--
Afternoon (18 Jun)8ft (2.4m)6s
Evening (18 Jun)6ft (1.8m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 4mm), mostly falling on Thu night. Warm (max 26°C on Fri afternoon, min 14°C on Sat night). Winds decreasing (fresh winds from the WNW on Sat morning, calm by Sun afternoon).

Thu
18
Friday
19
Saturday
20
Sun
21
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
2 AM
5 AM
8 AM
11 AM
2 PM
Rating
(10 max)
1
1
1
0
0
1
1
1
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)
2.5
SSE
7
1.9
SSE
7
1.6
SSE
7
1.2
SE
7
1.1
SE
7
0.9
SE
7
0.7
SE
8
0.6
SE
8
0.5
SE
8
0.5
SE
8
0.4
SSE
9
0.4
SSE
9
0.3
SSE
9
0.3
SSE
9
0.3
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
10
0.2
SSE
10
0.2
SSE
9
0.1
E
12
Wave Graph
Metric surfscale
Energy kJ
615
397
272
147
112
75
57
46
28
29
30
30
15
15
14
7
7
6
6
6
10
9
8
5
Wind (km/h)
25
SSW
15
SW
20
WSW
25
W
30
W
25
W
25
W
25
W
25
W
25
WSW
25
W
20
WSW
25
W
30
W
30
WNW
30
WNW
30
WNW
20
WNW
15
WNW
15
W
10
W
10
WNW
5
WNW
5
SW
Wind State
cross-off
cross-off
cross-off
off
off
off
off
off
off
off
off
off
off
off
cross-off
cross-off
cross-off
off
off
off
off
off
off
cross-off
High Tide
2:39PM3.43m
2:54AM3.69m
3:34PM3.38m
3:51AM3.49m
4:30PM3.31m
4:49AM3.28m
Low Tide
8:41PM0.39m
9:18AM0.10m
9:39PM0.48m
10:13AM0.27m
10:39PM0.57m
11:07AM0.46m
light rain
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:03
5:03
5:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:23
8:24
8:24
8:24
 mm
5
3
Temp °C
21
22
22
20
18
18
22
25
26
22
19
17
17
18
18
18
20
17
15
14
14
17
22
23
Feels °C
20
21
20
15
13
14
17
20
21
17
15
13
12
13
12
13
14
13
12
12
12
15
21
22
Swell 1
Height (m)
Direction
Period (s)
0.1
SE
14
1.9
SSE
7
1.6
SSE
7
1.2
SE
7
1.1
SE
7
0.9
SE
7
0.7
SE
8
0.6
SE
8
0.5
SE
8
0.5
SE
8
0.4
SSE
9
0.4
SSE
9
0.3
SSE
9
0.3
SSE
9
0.3
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
10
0.2
SSE
10
0.2
SSE
9
0.1
E
12
Energy kJ
8
397
272
147
112
75
57
46
28
29
30
30
15
15
14
7
7
6
6
6
10
9
8
3
Swell 2
Height (m)
Direction
Period (s)
0.1
E
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
14
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.2
SSE
5
0.1
SE
13
0.2
SSW
4
0.1
SW
4
0.1
SE
12
0.1
SE
12
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
12
0.1
SE
12
Energy kJ
4
8
8
8
8
7
7
7
7
7
7
7
3
7
2
1
6
6
3
3
3
3
3
5
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
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
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
E
13
0.1
E
13
0.1
SE
12
0.1
E
12
0.1
E
12
Energy kJ
8
4
8
8
7
7
7
7
7
7
7
7
7
3
3
6
3
3
Wind waves
Height (m)
Direction
Period (s)
2.5
SSE
7
0.4
WSW
3
0.6
WSW
3
0.5
WSW
3
0.5
SW
3
0.5
SW
3
0.4
WSW
3
0.6
WSW
3
0.6
WSW
4
0.6
WSW
4
0.5
WSW
4
0.6
WSW
4
0.6
W
4
0.6
NW
4
0.5
NW
3
0.4
WNW
3
0.4
WNW
3
0.2
WNW
3
0.4
SSE
3
Energy kJ
615
4
9
7
6
5
4
7
8
8
7
10
9
10
5
3
3
1
3
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
1
1
1
1
1
2
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
3548
38
92
60
134
0
0
0
391
14
163
165
172
1049
680
182
182
163
172
186
162
182
182
493
Best forecast wave conditions in New Hampshire
Rating
(10 max)
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
4
2
2
2
3
3
3
2
3
1
3
3
2
3
4
1
3
2
3
3
3
3
3
2
Header Global
Rating
(10 max)
5
5
6
6
6
6
4
4
4
4
5
5
4
6
5
5
8
9
9
9
8
8
7
7
  • 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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