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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 Sunday 24 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
11.1° C
(Which is slightly warmer than usual)How big are the waves at Costellos today?
The current surf forecast for Costellos at 11AM is: 0.5m 4s primary swell from a Southeast direction and 0.2m 9s secondary swell from a East-southeast direction (forecast issued at 07:00am May 24). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 May) | 1.5ft (0.5m) | 4s |
| Afternoon (24 May) | 1.5ft (0.5m) | 4s |
| Evening (24 May) | 2ft (0.6m) | 5s |
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 Sun night. Warm (max 22°C on Mon afternoon, min 7°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 24 | Monday 25 | Tuesday 26 | Wed 27 | |||||||||||||||||||||
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 9 | SE 4 | SE 4 | SE 4 | SE 5 | SSE 5 | SE 5 | SE 6 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | |
14 | 8 | 9 | 9 | 14 | 17 | 47 | 115 | 263 | 365 | 344 | 319 | 270 | 244 | 216 | 216 | 192 | 192 | 167 | 163 | 138 | 101 | 69 | 45 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | glassy | cross-off | off | off | cross-off | cross-off | cross | cross-on | glassy | cross-on | cross-on | cross | cross | cross-off | cross-off | |
High Tide | 6:16AM3.16m | 6:56PM3.14m | 7:19AM3.05m | 7:51PM3.15m | 8:17AM2.97m | 8:41PM3.17m | ||||||||||||||||||
Low Tide | 12:36PM0.56m | 1:09AM0.73m | 1:32PM0.67m | 2:08AM0.71m | 2:24PM0.75m | |||||||||||||||||||
 |  | |  | | |  | | | | |  | | |  |  | | |  | | | | | | |
 | 5:11 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | 5:09 |
 | — | — | — | — | — | 8:07 | — | — | — | — | — | — | — | 8:08 | — | — | — | — | — | — | — | 8:08 | — | 8:09 |
— | — | — | 1 | 2 | 3 | 3 | 2 | 2 | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 10 | 9 | 8 | 7 | 8 | 10 | 10 | 10 | 11 | 10 | 14 | 22 | 20 | 16 | 14 | 14 | 14 | 16 | 18 | 19 | 15 | 17 | 18 |
9 | 7 | 6 | 6 | 3 | 3 | 6 | 6 | 8 | 11 | 8 | 12 | 21 | 19 | 15 | 13 | 13 | 14 | 14 | 15 | 16 | 12 | 16 | 16 | |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 4 | SE 4 | SE 4 | SE 5 | SSE 5 | SE 9 | E 18 | E 17 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 |
 kJ | 14 | 8 | 9 | 9 | 14 | 17 | 3 | 6 | 6 | 365 | 344 | 319 | 270 | 244 | 216 | 216 | 192 | 192 | 167 | 163 | 138 | 101 | 69 | 45 |
Swell 2 Height (m) Direction Period (s) | E 12 | ESE 9 | ESE 9 | SE 9 | SE 9 | SE 9 | E 12 | — | — | E 16 | E 16 | E 16 | E 16 | E 16 | E 16 | E 16 | E 16 | E 16 | E 15 | E 15 | E 15 | E 15 | E 15 | SSE 5 |
| kJ | 3 | 8 | 8 | 3 | 3 | 3 | 3 | — | — | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 22 |
Swell 3 Height (m) Direction Period (s) | — | E 18 | SE 7 | SE 7 | E 13 | SE 12 | E 18 | — | — | — | — | — | — | — | — | — | — | — | S 15 | — | S 15 | — | — | E 15 |
| kJ | — | 6 | 2 | 2 | 3 | 6 | 6 | — | — | — | — | — | — | — | — | — | — | — | 4 | — | 4 | — | — | 4 |
Wind waves Height (m) Direction Period (s) | SE 4 | — | — | — | — | E 3 | SE 5 | SE 6 | SE 7 | — | — | — | — | — | — | — | — | — | — | — | — | S 3 | SSE 4 | S 5 |
| kJ | 7 | — | — | — | — | 2 | 47 | 115 | 263 | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 24 | 27 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 787 | 787 | 565 | 563 | 492 | 457 | 186 | 172 | 69 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 5 | 0 | 182 | 182 | 198 | 198 | 0 | 0 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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