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Surf Forecasts:

Costellos surfForecast / New Hampshire / USA

information circle48hr Weather and Surf, issued 6 pm Tuesday 20 Jan 2026 EST
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
4.9° C
 (Which is slightly warmer than usual)

How big are the waves at Costellos today?

The current surf forecast for Costellos at 1AM is: 0.4m 9s primary swell from a Southeast direction (forecast issued at 06:00pm January 20). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (EST) & DateWave HeightWave Period
Morning (21 Jan)1.5ft (0.4m)9s
Afternoon (21 Jan)1.5ft (0.4m)10s
Evening (21 Jan)1.5ft (0.4m)9s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
1.7
S
1.7
S
1.7
S
1.2
S
0.4
ESE
0.4
ESE
0.4
SE
0.4
ESE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
0.4
SE
Period(s) (?)9999999101010967771099111111111111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)5329282726262932333222219255262124383521442929303030
Wind
(km/h)
25
W
25
W
25
WSW
20
WSW
20
WSW
20
WSW
20
WSW
20
SW
20
SW
25
SSW
20
SSW
25
SW
30
SW
25
SW
25
WSW
25
WSW
25
W
30
W
30
W
25
W
20
WSW
20
WSW
25
W
30
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offoffoffoffoffoffoffcross-
off		offoff
High Tide
/ height (m)
12:29AM
3.10
12:37PM
3.34
1:08AM
3.15
1:19PM
3.29
1:48AM
3.20
Low Tide
/ height (m)
6:19PM
0.42
6:28AM
0.67
6:57PM
0.43
7:10AM
0.65
7:35PM
0.47
7:55AM
0.64
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Sunrise------7:07-------7:07-------7:05-
Sunset4:38-------4:39-------4:42-------
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
light snow
cloud
part cloud
clear
clear
clear
part cloud
clear
cloud
cloud
cloud
cloud
cloud
Rain (mm)
------------------------
Temp. °C-7-8-9-10-10-10-8-5-4-4-21212440-3-3-4-3-3-4
Feels °C (?)-16-16-17-18-17-17-15-12-11-12-9-6-6-6-6-3-4-9-12-11-11-10-11-13
  • 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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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.

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

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