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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 pm Sunday 03 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
8.2° C
(Which is slightly warmer than usual)How big are the waves at Costellos today?
The current surf forecast for Costellos at 1AM is: 0.9m 9s primary swell from a East-southeast direction and 0.6m 8s secondary swell from a Southeast direction (forecast issued at 07:00pm May 03). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (04 May) | 3.5ft (1.1m) | 9s |
| Afternoon (04 May) | 2.5ft (0.7m) | 9s |
| Evening (04 May) | 3.5ft (1.0m) | 6s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 5mm), mostly falling on Wed afternoon. Warm (max 25°C on Tue afternoon, min 5°C on Sun night). Winds increasing (light winds from the SW on Mon night, fresh winds from the SSW by Tue afternoon). | ||||||||||||||||||||||||
Sun 3 | Monday 4 | Tuesday 5 | Wed 6 | |||||||||||||||||||||
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 | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 8 | ESE 8 | ESE 8 | E 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | S 6 | SSE 7 | S 6 | S 6 | S 5 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | S 7 | S 7 | SSE 7 | SSE 6 | |
96 | 73 | 72 | 162 | 275 | 238 | 127 | 78 | 40 | 51 | 219 | 126 | 64 | 71 | 83 | 160 | 394 | 558 | 336 | 261 | 262 | 212 | 187 | 309 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | off | off | off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 1:14AM3.31m | 1:52PM2.95m | 1:54AM3.23m | 2:34PM2.86m | 2:36AM3.13m | |||||||||||||||||||
Low Tide | 7:04PM0.79m | 7:39AM0.46m | 7:44PM0.87m | 8:21AM0.55m | 8:26PM0.96m | 9:05AM0.66m | ||||||||||||||||||
 |  | |  |  |  | | |  | | | | | | | | | | | | | | |  | |
 | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — |
 | 7:45 | — | — | — | — | — | — | — | 7:45 | — | — | — | — | — | — | — | 7:47 | — | — | — | — | — | — | 7:49 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | |
Temp °C | 12 | 9 | 7 | 5 | 7 | 10 | 16 | 18 | 19 | 17 | 13 | 12 | 11 | 13 | 21 | 25 | 23 | 19 | 17 | 16 | 14 | 15 | 19 | 16 |
5 | 4 | 2 | 0 | 2 | 5 | 9 | 12 | 15 | 14 | 8 | 8 | 7 | 9 | 16 | 20 | 17 | 13 | 13 | 13 | 11 | 13 | 16 | 13 | |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | E 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 16 |
 kJ | 96 | 73 | 72 | 162 | 275 | 238 | 127 | 78 | 40 | 24 | 6 | 6 | 6 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 5 |
Swell 2 Height (m) Direction Period (s) | NNE 4 | NNE 4 | SE 9 | SE 8 | SSE 10 | SSE 10 | SE 10 | SSE 10 | SSE 9 | — | — | — | — | — | E 18 | — | — | — | — | — | — | — | E 16 | E 16 |
| kJ | 7 | 3 | 38 | 54 | 20 | 39 | 24 | 9 | 7 | — | — | — | — | — | 6 | — | — | — | — | — | — | — | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | — | SE 10 | NNE 4 | NE 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 4 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 3 | NW 3 | WNW 3 | W 3 | WSW 3 | SW 3 | SSW 4 | SSW 4 | SSW 4 | S 6 | SSE 7 | S 6 | S 6 | S 5 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | S 7 | S 7 | SSE 7 | SSE 6 |
| kJ | 3 | 2 | 1 | 2 | 3 | 5 | 8 | 19 | 14 | 51 | 219 | 126 | 64 | 71 | 83 | 160 | 394 | 558 | 336 | 261 | 262 | 212 | 187 | 309 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 5 | 5 | 0 | 0 | 0 | 14 | 2570 | 0 | 2574 | 0 | 198 | 198 | 198 | 198 | 2590 | 3616 | 2748 | 2578 | 1733 | 1724 | 1711 | 198 | 1691 | 1297 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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