Costellos surfForecast / New Hampshire / USA

information circle48hr Weather and Surf, issued 1 am Monday 27 Apr 2026 EDT
Forecast update in hr  min  s Forecast update imminent
Costellos surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Costellos sea temperature is
6.9° C
(Which is slightly warmer than usual)

How big are the waves at Costellos today?

The current surf forecast for Costellos at 10AM is: 0.2m 10s primary swell from a East direction and 0.1m 12s secondary swell from a East direction (forecast issued at 01:00am April 27). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (27 Apr)0.5ft (0.2m)10s
Afternoon (27 Apr)0.5ft (0.1m)12s
Evening (27 Apr)1.5ft (0.4m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 13°C on Mon afternoon, min 5°C on Tue night). Wind will be generally light.

Monday
27
Tuesday
28
Wednesday
29
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
1
1
0
0
0
0
1
2
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
0.3
E
12
0.2
E
10
0.2
E
10
0.2
E
10
0.1
E
12
0.2
SSE
7
0.4
SE
7
0.5
SE
7
0.6
SE
7
0.8
SE
7
0.9
ESE
8
1
ESE
8
1.2
ESE
7
1.3
ESE
7
1.3
ESE
7
1.5
ESE
8
1.7
ESE
9
1.7
ESE
9
1.9
ESE
10
2
E
10
2.1
ESE
9
2
ESE
9
1.9
ESE
9
1.9
ESE
9
Wave Graph
Metric surfscale
Energy kJ
26
7
7
7
3
5
18
24
38
64
98
117
157
177
181
284
427
495
681
752
705
645
585
592
Wind (km/h)
5
NNE
10
NNE
10
NNE
15
E
10
E
10
E
10
SE
5
ESE
0
NNE
10
NE
15
ENE
15
ENE
15
ENE
15
E
10
ENE
15
E
10
N
15
N
20
NE
20
NE
20
NE
20
NE
15
NNE
5
NE
cross
cross-on
cross
on
on
on
cross-on
cross-on
glassy
cross-on
cross-on
on
on
on
on
on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
8:42AM3.13m
9:12PM3.19m
9:36AM3.13m
9:58PM3.26m
10:24AM3.13m
10:39PM3.32m
Low Tide
2:32AM0.71m
2:57PM0.60m
3:26AM0.62m
3:44PM0.62m
4:14AM0.52m
4:28PM0.64m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:41
5:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:37
7:39
7:40
Temp °C
10
9
9
12
12
13
11
10
8
7
6
6
6
6
5
5
5
5
5
6
5
5
6
7
7
6
6
8
8
9
8
7
6
3
1
1
2
1
1
0
1
0
0
1
-1
0
2
5
Swell 1
Height (m)
Direction
Period (s)
0.3
E
12
0.2
E
10
0.2
E
10
0.2
E
10
0.1
E
9
0.2
SSE
7
0.4
SE
7
0.5
SE
7
0.6
SE
7
0.8
SE
7
0.9
ESE
8
1
ESE
8
1.2
ESE
7
1.3
ESE
7
1.3
ESE
7
1.5
ESE
8
1.7
ESE
9
1.7
ESE
9
1.9
ESE
10
2
E
10
2.1
ESE
9
2
ESE
9
1.9
ESE
9
Energy kJ
26
7
7
7
2
5
18
24
38
64
98
117
157
177
181
284
427
495
681
752
705
645
585
Swell 2
Height (m)
Direction
Period (s)
0.2
E
12
0.1
E
12
0.1
E
12
0.1
E
12
0.1
SE
7
0.1
E
9
0.1
E
9
0.1
E
9
0.1
SE
10
0.1
E
9
0.1
E
9
0.1
E
8
0.7
SE
9
0.9
SE
9
Energy kJ
12
3
3
3
2
2
2
2
4
2
2
1
79
120
Swell 3
Height (m)
Direction
Period (s)
0.1
S
8
0.1
S
8
0.1
S
8
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
11
0.1
E
11
Energy kJ
1
1
1
3
3
3
3
3
3
3
2
Wind waves
Height (m)
Direction
Period (s)
0.6
NNE
3
1.9
ESE
9
Energy kJ
9
592
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
3
3
Distance (km)
186
254
186
186
567
1293
186
165
14
98
39
39
39
39
39
98
5
5
98
39
39
39
5
0
Best forecast wave conditions in New Hampshire
Rating
(10 max)
2
2
3
3
Best forecast wave conditions in United States
Rating
(10 max)
1
3
3
1
2
2
1
2
3
2
2
2
1
1
2
3
2
3
3
4
3
3
3
3
Header Global
Rating
(10 max)
7
6
6
6
6
5
5
5
5
5
5
5
6
8
9
9
8
7
8
8
6
6
5
5
  • 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

FREE! Surf-Forecast.com widget for your website

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