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Surf Forecasts:

Costellos surfForecast / New Hampshire / USA

information circle48hr Weather and Surf, issued 7 pm Wednesday 20 May 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
9.8° C
 (Which is normal for this time of year)

How big are the waves at Costellos today?

The current surf forecast for Costellos at 4AM is: 0.4m 9s primary swell from a Southeast direction and 0.3m 6s secondary swell from a South-southeast direction, 0.4m 4s secondary swell from a Northeast direction (forecast issued at 07:00pm May 20). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 May)1.5ft (0.4m)9s
Afternoon (21 May)1ft (0.3m)9s
Evening (21 May)1ft (0.3m)9s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast

Mostly dry. Warm (max 25°C on Wed night, min 10°C on Thu night). Wind will be generally light.

Wed
20
Thursday
21
Friday
22
Sat
23
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)
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 MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.4
SE
9
0.5
SE
9
0.5
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
Wave Graph
Metric surfscale
Energy kJ
29
41
41
29
21
29
12
12
12
13
13
13
13
13
13
14
15
15
15
15
15
15
15
14
Wind (km/h)
20
W
15
WNW
15
NW
15
WNW
10
NNE
10
NE
10
ESE
5
S
10
S
15
NW
10
N
15
NNE
10
N
10
NNE
10
ESE
20
SE
20
SSE
15
S
10
SW
5
W
5
W
5
NNW
10
E
15
E
Wind State
off
off
cross-off
cross-off
cross
cross-on
on
cross
cross
cross-off
cross
cross
cross
cross
on
cross-on
cross-on
cross
cross-off
off
off
cross-off
on
on
High Tide
2:56PM3.35m
3:10AM3.67m
3:55PM3.27m
4:10AM3.50m
4:56PM3.20m
5:13AM3.32m
Low Tide
8:56PM0.47m
9:38AM0.12m
9:57PM0.57m
10:37AM0.28m
11:00PM0.66m
11:37AM0.43m
clear
clear
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
5:13
—
—
—
—
—
—
—
5:13
—
—
—
—
—
—
—
5:13
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
8:04
—
—
—
—
—
—
—
8:05
—
—
—
—
—
—
—
8:06
—
—
—
—
—
8:07
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
28
25
20
17
15
13
12
14
16
13
13
11
10
11
13
14
14
13
12
13
12
13
15
14
Feels °C
26
22
17
13
12
10
9
11
12
9
10
6
6
7
9
8
8
7
7
10
9
11
11
9
Swell 1
Height (m)
Direction
Period (s)
0.4
SE
9
0.5
SE
9
0.5
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.6
NE
4
0.4
NE
4
0.3
SE
9
0.3
SE
9
0.3
SSE
3
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
S
3
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
Energy kJ
29
41
41
29
21
29
11
4
12
13
2
13
13
13
13
14
15
15
15
2
15
15
15
14
Swell 2
Height (m)
Direction
Period (s)
0.3
SSE
5
0.1
E
14
0.1
E
14
0.3
SSE
6
0.3
SSE
6
0.1
E
15
0.3
SE
9
0.3
SE
9
0.3
NE
5
0.2
ENE
4
0.3
SE
9
0.2
SSE
3
0.2
SSE
5
0.1
SE
5
0.3
NE
3
—
—
0.1
SE
13
0.1
E
14
0.3
SE
10
0.2
S
3
0.2
S
3
—
0.1
E
14
Energy kJ
6
4
4
7
7
4
12
12
3
1
13
1
3
1
2
—
—
7
4
15
1
1
—
4
Swell 3
Height (m)
Direction
Period (s)
0.1
E
12
0.1
E
12
0.2
WSW
3
0.2
NNE
3
0.1
E
15
0.1
S
15
0.2
SSE
6
0.2
ENE
5
0.1
SE
14
0.1
SE
6
0.1
SE
6
0.1
SE
6
0.1
SE
13
0.1
E
14
0.1
SE
5
0.1
E
14
0.1
E
14
—
—
0.1
SE
13
0.1
E
14
0.1
E
14
0.1
E
14
—
Energy kJ
3
3
1
1
4
4
3
2
8
1
1
1
7
4
1
4
4
—
—
7
4
4
4
—
Wind waves
Height (m)
Direction
Period (s)
0.5
W
3
0.4
W
3
0.3
NW
2
0.2
NNW
2
0.4
NE
4
0.6
NE
4
—
0.3
SE
5
0.4
SSE
3
0.3
SSE
3
0.3
S
3
—
0.3
NNE
3
0.4
NE
3
0.3
NNE
3
—
0.2
SSE
2
0.4
S
3
0.4
S
3
—
—
—
—
—
Energy kJ
4
3
1
1
4
10
—
5
3
2
1
—
1
2
2
—
1
2
3
—
—
—
—
—
Nearest Offshore or Glassy
Ogunquit Beach
Maine
Ogunquit Beach
Maine
White Crest Beach (Wellfleet)
Massachusetts
Scarborough State Beach
Rhode Island
K38 and 39
Rhode Island
K38 and 39
Rhode Island
Matunuck-The point
Rhode Island
Lighthouse-Southside
Rhode Island
Coastguards
Long Island NY
Moose
Nova Scotia
Coastguards
Long Island NY
Coastguards
Long Island NY
Backyards
Nova Scotia
Lawrencetown Left Point
Nova Scotia
Outer Banks Pier
Carolina North
Jennette's Pier
Carolina North
Outer Banks Pier
Carolina North
S-Turns
Carolina North
S-Turns
Carolina North
S-Turns
Carolina North
Georgica Pond
Long Island NY
Jennette's Pier
Carolina North
Avon Pier
Carolina North
Avon Pier
Carolina North
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
Distance (km)
38
38
131
182
186
186
186
186
333
618
333
333
620
627
887
883
887
910
910
910
254
883
938
938
Best forecast wave conditions in New Hampshire
Rating
(10 max)
Best forecast wave conditions in United States
Slip Point (Clallam Bay)
Washington
Cape Elizabeth
Washington
Super Tubes
CAL - Ventura
Super Tubes
CAL - Ventura
Lincoln City Nelscott Reef
Oregon North
Lincoln City Nelscott Reef
Oregon North
Fort Canby A Jetty
Washington
Fort Canby A Jetty
Washington
Elwha
Washington
Coronado Beaches
CAL - San Diego County
Super Tubes
CAL - Ventura
Trestles (Uppers)
CAL - Orange County
Trestles (Uppers)
CAL - Orange County
Trestles (Uppers)
CAL - Orange County
Newport Point
CAL - Orange County
Cape Elizabeth
Washington
The Strait
Washington
Super Tubes
CAL - Ventura
K.O.A
Carolina North
La Push
Washington
Trestles (Uppers)
CAL - Orange County
La Push
Washington
Malibu
CAL - LA County
Neah Bay
Washington
Rating
(10 max)
1
2
1
1
3
3
3
3
1
2
1
2
2
2
2
2
1
1
2
3
2
3
2
1
Header Global
Mata Veri
Chile
Mata Veri
Chile
Mata Veri
Chile
Tahai
Chile
Tahai
Chile
Tahai
Chile
Bali Village
Indonesia
Pauba
Brazil
Otago Peninsula - Allans Beach
New Zealand
Barra de Guaratiba
Brazil
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Easter Reef
Australia
Dunedin - Bobs Beach
New Zealand
Arrawarra
Australia
Dunedin - Bobs Beach
New Zealand
Papatowai
New Zealand
Papatowai
New Zealand
Papatowai
New Zealand
Black Rock
Australia
Papatowai
New Zealand
Rating
(10 max)
5
5
5
5
5
5
4
5
4
4
5
7
8
7
6
5
5
6
7
7
8
8
7
6
  • 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

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View detailed surf forecast for Costellos at:
surf-forecast.com

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