- Forecast
- Maps
- Live
- Weather State
- Spot Information
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 23 Mar 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
3.8° 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: 0.8m 7s primary swell from a Southeast direction and 0.1m 16s secondary swell from a East direction, 1.0m 4s secondary swell from a Northeast direction (forecast issued at 01:00am March 23). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Mar) | 5ft (1.5m) | 6s |
| Afternoon (23 Mar) | 6ft (1.8m) | 7s |
| Evening (23 Mar) | 6.5ft (2.0m) | 7s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 23 | Tuesday 24 | Wednesday 25 | ||||||||||||||||||||||
| 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 | 8 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 112 | 89 | 79 | 138 | 230 | 313 | 307 | 417 | 355 | 392 | 422 | 394 | 355 | 311 | 225 | 162 | 103 | 58 | 61 | 27 | 28 | 17 | 18 | 18 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- off | cross | cross | cross | glass | cross- on | cross | cross- off | cross- off | cross- off | off | off | off | cross- off | cross- off | cross- off |
High Tide / height (m) | 2:43AM 3.63 | 3:21PM 3.22 | 3:37AM 3.53 | 4:19PM 3.09 | 4:36AM 3.41 | 5:24PM 2.98 | ||||||||||||||||||
Low Tide / height (m) | 8:29PM 0.43 | 9:08AM 0.20 | 9:21PM 0.56 | 10:05AM 0.31 | 10:19PM 0.69 | 11:08AM 0.43 | ||||||||||||||||||
Monday 23 | Tuesday 24 | Wednesday 25 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:41 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:37 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:59 | - | - | - | - | - | - | - | 7:00 | - |
 | | |  | | | | |  | | |  | | | | | |  | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 0 | 0 | 1 | -1 | 0 | 2 | 2 | 1 | 0 | -1 | -1 | -2 | 1 | 3 | 5 | 5 | 2 | 0 | 0 | -1 | 4 | 9 | 10 | 8 |
| Feels °C (?) | -6 | -7 | -6 | -8 | -8 | -6 | -5 | -3 | -4 | -6 | -6 | -7 | -2 | -2 | 0 | -1 | -5 | -7 | -6 | -7 | -2 | 4 | 4 | 3 |
- 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.
Nearest