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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 1 am Monday 20 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
6.7° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Costellos today?
The current surf forecast for Costellos at 6AM is: 0.5m 7s primary swell from a East direction and 0.2m 6s secondary swell from a South-southeast direction (forecast issued at 01:00am April 20). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Apr) | 1.5ft (0.5m) | 7s |
| Afternoon (20 Apr) | 1.5ft (0.4m) | 7s |
| Evening (20 Apr) | 2ft (0.6m) | 8s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||||||||||
| 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 | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 4 | 7 | 7 | 7 | 7 | 4 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 68 | 49 | 35 | 24 | 15 | 15 | 15 | 42 | 20 | 19 | 18 | 18 | 19 | 19 | 18 | 18 | 37 | 16 | 17 | 9 | 8 | 26 | 29 | 37 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | off | cross- off | cross | cross | cross | cross- off | cross | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross |
High Tide / height (m) | 1:33AM 3.83 | 2:13PM 3.38 | 2:26AM 3.75 | 3:09PM 3.28 | 3:23AM 3.62 | 4:09PM 3.16 | ||||||||||||||||||
Low Tide / height (m) | 8:00AM -0.03 | 8:12PM 0.41 | 8:55AM 0.06 | 9:08PM 0.53 | 9:53AM 0.20 | |||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:50 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:30 | - | - | - | - | - | - | - | 7:31 | - | - | - | - | - | - | - | 7:32 | - |
 | | |  |  | |  |  |  | | | | | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | - | - | - | - |
| Temp. °C | 3 | 2 | 2 | 3 | 7 | 8 | 8 | 5 | 4 | 2 | 1 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 2 | 4 | 6 | 8 | 8 |
| Feels °C (?) | -2 | -3 | -3 | -2 | 1 | 2 | 1 | -1 | -1 | -3 | -4 | -2 | 0 | -3 | -3 | -4 | -4 | -3 | -5 | -4 | -1 | 1 | 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)
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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