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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 Wednesday 27 May 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
11.7° C
(Which is slightly warmer than usual)How big are the waves at Costellos today?
The current surf forecast for Costellos at 7AM is: 0.8m 7s primary swell from a South-southeast direction and 0.1m 15s secondary swell from a East direction (forecast issued at 01:00am May 27). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 May) | 2.5ft (0.7m) | 7s |
| Afternoon (27 May) | 2ft (0.6m) | 7s |
| Evening (27 May) | 1.5ft (0.5m) | 7s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 19mm), heaviest on Fri night. Warm (max 27°C on Wed afternoon, min 7°C on Fri night). Winds increasing (calm on Thu night, fresh winds from the S by Fri night). | ||||||||||||||||||||||||
Wednesday 27 | Thursday 28 | Friday 29 | ||||||||||||||||||||||
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 | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SE 7 | SSE 7 | SSE 7 | SE 7 | SSE 7 | SE 7 | SE 7 | SSE 6 | SE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SE 8 | E 9 | E 9 | E 9 | SSE 8 | SSE 8 | ENE 6 | SSE 4 | SSE 4 | SSE 5 | |
44 | 68 | 46 | 31 | 32 | 23 | 22 | 28 | 20 | 16 | 11 | 10 | 6 | 4 | 10 | 6 | 6 | 6 | 6 | 6 | 7 | 12 | 25 | 72 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | on | on | glassy | cross-on | glassy | off | cross-off | on | cross-on | cross | cross | cross | |
High Tide | 9:11AM2.94m | 9:26PM3.20m | 9:59AM2.93m | 10:08PM3.24m | 10:43AM2.93m | 10:48PM3.27m | ||||||||||||||||||
Low Tide | 3:01AM0.66m | 3:12PM0.80m | 3:49AM0.60m | 3:56PM0.83m | 4:33AM0.55m | 4:37PM0.84m | ||||||||||||||||||
 | |  | |  | |  |  | | | |  | |  | |  | | | | | | | |  | |
 | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:09 | — | — | — | — | — | — | — | 8:10 | — | — | — | — | — | — | — | 8:12 | — |
— | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 2 | 1 | 1 | — | — | — | — | — | — | 5 | 4 | |
Temp °C | 20 | 18 | 20 | 25 | 27 | 26 | 22 | 18 | 14 | 13 | 15 | 15 | 14 | 15 | 16 | 13 | 12 | 10 | 12 | 15 | 13 | 12 | 12 | 12 |
17 | 15 | 18 | 23 | 24 | 24 | 19 | 16 | 12 | 11 | 13 | 14 | 12 | 14 | 16 | 11 | 11 | 8 | 10 | 12 | 9 | 8 | 9 | 7 | |
Swell 1 Height (m) Direction Period (s) | SSE 5 | SSE 7 | SSE 7 | SE 7 | SSE 7 | SE 7 | SE 7 | SSE 6 | SE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SE 8 | SSE 8 | SSE 8 | NE 4 | ENE 5 | ENE 5 | ENE 6 | ENE 6 | E 8 | E 9 |
 kJ | 20 | 68 | 46 | 31 | 32 | 23 | 22 | 28 | 20 | 16 | 11 | 10 | 6 | 4 | 10 | 6 | 6 | 3 | 3 | 3 | 7 | 6 | 12 | 24 |
Swell 2 Height (m) Direction Period (s) | SE 7 | E 15 | E 15 | SSW 4 | E 14 | E 14 | E 14 | E 13 | E 14 | NNE 3 | E 13 | — | ENE 4 | ENE 4 | E 9 | E 9 | E 9 | SSE 8 | SSE 8 | SSE 8 | E 8 | E 8 | ENE 5 | ENE 5 |
| kJ | 44 | 4 | 4 | 6 | 4 | 4 | 4 | 4 | 4 | 1 | 4 | — | 1 | 1 | 2 | 6 | 6 | 6 | 6 | 6 | 5 | 12 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | E 15 | — | — | E 15 | — | E 14 | — | E 14 | — | E 13 | E 6 | — | E 11 | SE 8 | — | E 13 | E 12 | E 9 | E 8 | E 8 | — | E 14 | E 15 | E 15 |
| kJ | 4 | — | — | 4 | — | 4 | — | 4 | — | 4 | 1 | — | 2 | 3 | — | 3 | 3 | 6 | 6 | 5 | — | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | SW 3 | WSW 3 | WSW 3 | WSW 3 | — | — | NW 2 | N 3 | NNE 3 | NNE 3 | NNE 3 | NE 3 | — | — | NE 4 | NE 4 | NE 4 | NNW 3 | — | — | SE 3 | SSE 4 | SSE 4 | SSE 5 |
| kJ | 5 | 3 | 2 | 1 | — | — | 2 | 1 | 2 | 4 | 1 | 2 | — | — | 2 | 3 | 3 | 1 | — | — | 4 | 12 | 25 | 72 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 14 | 38 | 0 | 38 | 38 | 395 | 163 | 162 | 182 | 186 | 186 | 186 | 186 | 227 | 232 | 227 | 227 | 227 | 232 | 227 | 493 | 493 | 493 | 273 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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