Costellos Surf Break

Lat Long: 42.95° N 70.78° W

Issued: 7 am 21 Jun 2026 (local time)

Forecast update in  hr  min

Today's Costellos sea temperature is
14.2° C

Slightly cooler than normal

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 (21 Jun):

  • Morning surf: Morning surf (21 Jun, local time) - 0.5ft (0.2m), 9s period with SSE swell.
  • Afternoon surf: Afternoon surf (21 Jun, local time) - 0.5ft (0.2m), 8s period with SSE swell.
  • Evening surf: Evening surf (21 Jun, local time) - 0.5ft (0.2m), 8s period with SSE swell.

The current surf forecast for Costellos at 3PM is: 0.2m 8s primary swell from a South-southeast direction and 0.1m 12s secondary swell from a Southeast direction (forecast issued at 07:00am June 21). The wind direction is predicted to be onshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 Jun)0.5ft (0.2m)9s
Afternoon (21 Jun)0.5ft (0.2m)8s
Evening (21 Jun)0.5ft (0.2m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 32mm), heaviest during Mon night. Warm (max 23°C on Sun morning, min 14°C on Mon night). Wind will be generally light.

Sunday
21
Monday
22
Tuesday
23
Wed
24
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
2 AM
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
SSE
10
0.3
SSE
9
0.2
SSE
9
0.2
SSE
9
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.1
SE
12
0.1
SE
12
0.2
SSE
7
0.2
SSE
7
0.2
SSE
7
0.2
SSE
6
0.2
SSE
6
0.2
SSE
6
0.4
SSE
3
0.5
SE
4
0.8
SSE
5
0.9
SSE
5
0.8
SSE
5
0.6
SE
5
0.5
SE
5
0.6
SE
5
0.5
SE
6
Wave Graph
Metric surfscale
Energy kJ
18
17
8
7
6
6
6
6
5
5
5
5
5
5
5
5
8
28
36
32
20
12
18
19
Wind (km/h)
10
WSW
15
W
10
WNW
5
ENE
5
S
5
SW
10
W
10
NW
5
WNW
5
NNE
5
ESE
10
SSW
5
SSW
15
SE
10
ESE
10
ESE
5
N
10
N
15
N
10
N
0
N
10
SSE
10
WSW
10
WNW
Wind State
off
off
cross-off
on
cross
cross-off
off
cross-off
cross-off
glassy
cross-on
cross-off
cross-off
cross-on
cross-on
cross-on
glassy
cross
cross
cross
glassy
cross-on
off
cross-off
High Tide
4:49AM3.28m
5:26PM3.23m
5:49AM3.08m
6:21PM3.17m
6:48AM2.93m
7:14PM3.12m
Low Tide
11:07AM0.46m
11:39PM0.66m
12:01PM0.64m
00:39AM0.72m
12:55PM0.79m
1:37AM0.75m
clear
clear
part cloud
cloud
thunderstorm
clear
clear
clear
clear
cloud
cloud
cloud
light rain
light rain
mod rain
light rain
mod rain
light rain
light rain
cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:03
5:03
5:03
5:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:24
8:24
8:24
8:25
 mm
1
4
4
8
4
6
3
2
Temp °C
16
19
23
22
21
22
19
17
16
17
18
19
15
14
14
15
15
15
15
17
20
19
18
18
Feels °C
15
17
21
21
21
22
18
16
16
17
18
18
15
13
13
15
16
14
14
17
21
19
18
17
Swell 1
Height (m)
Direction
Period (s)
0.3
SSE
10
0.3
SSE
9
0.2
SSE
9
0.2
SSE
9
0.2
SSE
8
0.2
SSE
8
0.2
SSE
8
0.2
SSE
5
0.2
SSE
5
0.2
SSE
5
0.2
SSE
7
0.2
SSE
7
0.2
SSE
6
0.2
SSE
6
0.2
SSE
6
0.1
SE
6
0.1
S
6
0.1
SE
8
0.1
SE
8
0.8
SSE
5
0.6
SE
5
0.5
SE
5
0.6
SE
5
0.5
SE
6
Energy kJ
18
17
8
7
6
6
6
2
2
2
5
4
4
4
4
2
1
3
3
32
20
12
18
19
Swell 2
Height (m)
Direction
Period (s)
0.1
SE
12
0.1
E
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
7
0.1
SE
7
0.2
SSE
7
0.2
S
5
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
E
11
0.1
E
11
0.2
NNE
3
0.3
E
5
Energy kJ
6
3
6
6
6
2
2
5
2
5
5
5
5
5
5
5
5
2
2
1
4
Swell 3
Height (m)
Direction
Period (s)
0.1
S
12
0.1
E
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
11
0.1
E
8
0.1
SE
8
0.1
E
11
0.1
E
11
0.3
SE
8
Energy kJ
3
3
6
6
6
5
5
5
1
2
2
2
9
Wind waves
Height (m)
Direction
Period (s)
0.2
WSW
2
0.2
SSW
2
0.2
SSE
2
0.4
SSE
3
0.5
SE
4
0.8
SSE
5
0.9
SSE
5
0.3
NNE
3
0.2
NNE
3
Energy kJ
1
1
1
4
8
28
36
2
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
Distance (km)
163
182
182
618
273
618
168
232
247
625
3368
2753
2019
3548
632
391
352
198
38
162
162
192
182
123
Best forecast wave conditions in New Hampshire
Rating
(10 max)
Best forecast wave conditions in United States
Rating
(10 max)
3
3
3
1
1
2
3
3
3
2
2
1
1
2
2
2
3
3
3
1
1
1
2
3
Header Global
Rating
(10 max)
8
8
7
7
7
6
6
5
7
6
6
5
5
5
5
5
5
5
5
5
7
8
9
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 

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