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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 Tuesday 26 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
11.3° C
(Which is slightly warmer than usual)How big are the waves at Costellos today?
The current surf forecast for Costellos at 11AM is: 1.2m 8s primary swell from a Southeast direction and 0.1m 15s secondary swell from a East direction (forecast issued at 07:00am May 26). The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 May) | 4.5ft (1.3m) | 8s |
| Afternoon (26 May) | 3.5ft (1.1m) | 8s |
| Evening (26 May) | 2.5ft (0.7m) | 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 6mm), mostly falling on Thu afternoon. Warm (max 28°C on Tue afternoon, min 10°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 26 | Wednesday 27 | Thursday 28 | Fri 29 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 7 | SE 7 | SE 7 | SSE 6 | SSE 6 | SE 6 | ENE 4 | E 5 | E 5 | E 6 | ENE 6 | ENE 6 | |
216 | 222 | 191 | 165 | 104 | 58 | 46 | 96 | 68 | 46 | 44 | 32 | 23 | 23 | 21 | 16 | 16 | 10 | 9 | 16 | 20 | 22 | 18 | 18 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-on | on | on | glassy | on | on | cross-on | |
High Tide | 8:17AM2.97m | 8:41PM3.17m | 9:11AM2.94m | 9:26PM3.20m | 9:59AM2.93m | 10:08PM3.24m | ||||||||||||||||||
Low Tide | 2:08AM0.71m | 2:24PM0.75m | 3:01AM0.66m | 3:12PM0.80m | 3:49AM0.60m | 3:56PM0.83m | ||||||||||||||||||
 |  | | |  | |  | | |  | | | | | | | | |  |  | | | |  | |
 | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | 5:07 |
 | — | — | — | — | — | 8:08 | — | — | — | — | — | — | — | 8:09 | — | — | — | — | — | — | — | 8:10 | — | 8:12 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | 1 | — | 1 | |
Temp °C | 17 | 18 | 23 | 27 | 28 | 24 | 20 | 19 | 18 | 19 | 25 | 27 | 25 | 21 | 17 | 15 | 13 | 14 | 14 | 12 | 11 | 11 | 10 | 11 |
16 | 17 | 21 | 25 | 26 | 23 | 18 | 16 | 16 | 17 | 23 | 25 | 24 | 19 | 15 | 13 | 11 | 13 | 12 | 10 | 10 | 10 | 8 | 9 | |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 5 | SSE 5 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 7 | SE 7 | SE 7 | SSE 6 | SSE 6 | SE 6 | SE 6 | E 5 | E 5 | E 6 | ENE 6 | ENE 6 |
 kJ | 216 | 222 | 191 | 165 | 104 | 25 | 29 | 96 | 68 | 46 | 44 | 32 | 23 | 23 | 21 | 16 | 16 | 10 | 6 | 16 | 20 | 22 | 18 | 18 |
Swell 2 Height (m) Direction Period (s) | E 16 | E 16 | E 15 | E 15 | E 15 | SE 8 | SE 8 | E 15 | E 15 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | — | E 13 | E 13 | SSE 6 | SSE 6 | SSE 7 | SSE 8 | SSE 8 |
| kJ | 5 | 5 | 4 | 4 | 4 | 58 | 46 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | — | 4 | 3 | 4 | 4 | 4 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 15 | — | E 15 | E 15 | — | — | — | — | — | — | — | — | E 14 | E 14 | — | — | SE 8 | SE 8 | SE 8 | E 9 | E 9 |
| kJ | — | — | — | 4 | — | 4 | 4 | — | — | — | — | — | — | — | — | 4 | 4 | — | — | 3 | 3 | 3 | 2 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | S 3 | SSE 4 | S 5 | S 5 | SW 3 | WSW 3 | W 3 | W 3 | — | — | — | NNE 3 | NE 3 | NE 3 | ENE 4 | ENE 4 | — | — | — | — | — |
| kJ | — | — | — | 4 | 16 | 37 | 56 | 5 | 2 | 1 | 2 | — | — | — | 1 | 2 | 3 | 5 | 9 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 0 | 0 | 38 | 405 | 442 | 171 | 162 | 186 | 186 | 186 | 168 | 227 | 235 | 273 | 338 | 247 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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