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Costellos Surf Forecast
/ New Hampshire (9 breaks) / New Hampshire (9 breaks) /
Surf Forecasts:
Costellos surfForecast / New Hampshire / USA
48hr Weather and Surf, issued 7 am Wednesday 15 Apr 2026 EDTForecast 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
5.1° C
(Which is normal for this time of year)How big are the waves at Costellos today?
The current surf forecast for Costellos at 2PM is: 0.4m 6s primary swell from a Southeast direction and 0.3m 8s secondary swell from a Southeast direction, 0.1m 4s secondary swell from a Northeast direction (forecast issued at 07:00am April 15). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Apr) | 2ft (0.6m) | 6s |
| Afternoon (15 Apr) | 1.5ft (0.4m) | 6s |
| Evening (15 Apr) | 1ft (0.3m) | 8s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | |||||||||||||||||||||
| 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) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 5 | 6 | 8 | 6 | 8 | 8 | 8 | 4 | 8 | 6 | 6 | 8 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 9 | 9 | 9 | 4 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 24 | 21 | 18 | 13 | 11 | 10 | 10 | 6 | 10 | 10 | 10 | 10 | 8 | 16 | 47 | 24 | 22 | 15 | 11 | 13 | 13 | 13 | 6 | 3 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross | on | on | cross- on | cross- on | glass | glass | on | on | cross- on | on | on | glass | glass | glass | cross- off | off | cross- on | on | on | on | glass | on |
High Tide / height (m) | 10:05AM 3.19 | 10:26PM 3.39 | 10:53AM 3.32 | 11:10PM 3.59 | 11:41AM 3.42 | 11:56PM 3.74 | ||||||||||||||||||
Low Tide / height (m) | 3:55AM 0.60 | 4:13PM 0.53 | 4:42AM 0.36 | 4:58PM 0.41 | 5:30AM 0.16 | 5:43PM 0.33 | ||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | |||||||||||||||||||||
| Sunrise | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 5:58 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:24 | - | - | - | - | - | - | - | 7:25 | - | - | - | - | - | - | - | 7:27 | - | - | - |
 |  | |  | |  | | |  | | | |  | | | | | |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 1 | - | - | - | 2 | 2 | - | - | - | - | 1 | - | - | - | - | - |
| Temp. °C | 16 | 13 | 10 | 10 | 8 | 7 | 7 | 7 | 8 | 8 | 9 | 16 | 11 | 11 | 13 | 14 | 16 | 17 | 11 | 12 | 11 | 9 | 10 | 8 |
| Feels °C (?) | 15 | 12 | 8 | 7 | 5 | 5 | 6 | 5 | 6 | 6 | 8 | 15 | 9 | 10 | 14 | 14 | 16 | 17 | 8 | 10 | 9 | 7 | 10 | 6 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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