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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 Monday 30 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 1PM is: 1.0m 6s primary swell from a South-southeast direction and 0.3m 8s secondary swell from a East direction (forecast issued at 07:00am March 30). An open ocean swell of 0.4m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Mar) | 3.5ft (1.1m) | 5s |
| Afternoon (30 Mar) | 3.5ft (1.0m) | 6s |
| Evening (30 Mar) | 4.5ft (1.4m) | 7s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 30 | Tuesday 31 | Wednesday 01 | Thu 02 | |||||||||||||||||||||
| 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 | 5 | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 6 | 6 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 40 | 62 | 78 | 74 | 70 | 199 | 100 | 56 | 56 | 48 | 46 | 29 | 34 | 47 | 59 | 45 | 164 | 118 | 104 | 152 | 68 | 64 | 64 | 45 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | on | on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 9:56AM 3.32 | 10:25PM 3.28 | 10:45AM 3.35 | 11:08PM 3.37 | 11:31AM 3.35 | 11:49PM 3.43 | ||||||||||||||||||
Low Tide / height (m) | 3:44AM 0.60 | 4:12PM 0.44 | 4:34AM 0.49 | 4:57PM 0.43 | 5:20AM 0.39 | 5:38PM 0.44 | ||||||||||||||||||
Monday 30 | Tuesday 31 | Wednesday 01 | Thu 02 | |||||||||||||||||||||
| Sunrise | - | 6:28 | - | - | - | - | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:26 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:06 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - | - | - |
 |  |  | | | |  | | | | |  | |  | |  | | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | 2 | 2 | - | - | 2 | - | - | - | - | - | - | - | - |
| Temp. °C | 4 | 5 | 10 | 15 | 18 | 15 | 13 | 13 | 12 | 11 | 14 | 11 | 2 | 1 | 2 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 0 | -1 |
| Feels °C (?) | -2 | -1 | 4 | 10 | 13 | 11 | 10 | 10 | 10 | 9 | 12 | 8 | -5 | -5 | -2 | 0 | 0 | -1 | -2 | -6 | -4 | -4 | -5 | -6 |
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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
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