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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 pm Monday 27 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
6.9° C
(Which is slightly warmer than usual)How big are the waves at Costellos today?
The current surf forecast for Costellos at 4AM is: 0.8m 8s primary swell from a Southeast direction and 0.1m 9s secondary swell from a East direction (forecast issued at 01:00pm April 27). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Apr) | 3.5ft (1.0m) | 8s |
| Afternoon (28 Apr) | 4.5ft (1.3m) | 8s |
| Evening (28 Apr) | 5ft (1.5m) | 8s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Thu morning. Very mild (max 13°C on Mon afternoon, min 5°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 27 | Tuesday 28 | Wednesday 29 | Thu 30 | |||||||||||||||||||||
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 | 5 AM | 8 AM | |
Swell Height Map |  |    |    |    | ||||||||||||||||||||
E 10 | E 12 | SSE 7 | SE 7 | SE 7 | SE 7 | SE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | |
7 | 3 | 5 | 13 | 24 | 37 | 93 | 114 | 149 | 202 | 217 | 291 | 371 | 521 | 710 | 800 | 768 | 688 | 611 | 539 | 549 | 599 | 747 | 747 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross | glassy | cross-off | |
High Tide | 8:42AM3.13m | 9:12PM3.19m | 9:36AM3.13m | 9:58PM3.26m | 10:24AM3.13m | 10:39PM3.32m | ||||||||||||||||||
Low Tide | 2:57PM0.60m | 3:26AM0.62m | 3:44PM0.62m | 4:14AM0.52m | 4:28PM0.64m | 4:58AM0.45m | ||||||||||||||||||
 | | |  | | | | | | | | |  |  | |  |  | | | | | | |  | |
 | — | — | — | — | — | — | 5:41 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — |
 | — | — | 7:37 | — | — | — | — | — | — | — | 7:39 | — | — | — | — | — | — | — | 7:40 | — | — | — | — | 7:42 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
Temp °C | 13 | 13 | 12 | 11 | 10 | 7 | 6 | 6 | 6 | 7 | 6 | 5 | 6 | 6 | 5 | 6 | 6 | 6 | 7 | 6 | 7 | 7 | 7 | 8 |
9 | 9 | 8 | 7 | 7 | 4 | 2 | 2 | 1 | 3 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 5 | 5 | 6 | 6 | |
Swell 1 Height (m) Direction Period (s) | E 10 | E 9 | SSE 7 | SE 7 | SE 7 | SE 7 | SE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 |
 kJ | 7 | 2 | 5 | 13 | 24 | 37 | 93 | 114 | 149 | 202 | 217 | 291 | 371 | 521 | 710 | 800 | 768 | 688 | 611 | 539 | 549 | 599 | 747 | 747 |
Swell 2 Height (m) Direction Period (s) | E 12 | SE 7 | E 9 | E 9 | E 9 | SE 10 | E 9 | E 9 | E 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 2 | 2 | 2 | 2 | 15 | 2 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | S 8 | E 12 | E 12 | E 12 | E 12 | E 9 | E 12 | E 11 | E 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 186 | 588 | 186 | 186 | 162 | 186 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 5 | 5 | 39 | 39 | 39 | 39 | 39 | 0 | 5 | 0 | 0 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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