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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 Monday 04 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
8.3° C
(Which is slightly warmer than usual)How big are the waves at Costellos today?
The current surf forecast for Costellos at 12PM is: 0.9m 9s primary swell from a East direction and 0.3m 10s secondary swell from a South-southeast direction (forecast issued at 07:00am May 04). An open ocean swell of 0.6m 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) | 5ft (1.5m) | 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 11mm), heaviest on Wed night. Warm (max 26°C on Tue afternoon, min 10°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||||||||
Monday 4 | Tuesday 5 | Wednesday 6 | Thu 7 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ESE 9 | ESE 9 | E 9 | E 9 | E 9 | S 7 | SSE 7 | S 6 | S 6 | S 5 | S 6 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | S 7 | S 7 | S 7 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | SSE 6 | |
275 | 202 | 127 | 78 | 57 | 124 | 186 | 108 | 62 | 67 | 91 | 122 | 285 | 529 | 317 | 240 | 240 | 206 | 206 | 240 | 349 | 260 | 167 | 188 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-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 | cross | cross | cross | cross-off | |
High Tide | 1:52PM2.95m | 1:54AM3.23m | 2:34PM2.86m | 2:36AM3.13m | 3:18PM2.76m | |||||||||||||||||||
Low Tide | 7:39AM0.46m | 7:44PM0.87m | 8:21AM0.55m | 8:26PM0.96m | 9:05AM0.66m | 9:10PM1.06m | ||||||||||||||||||
 |  | |  | | |  |  | | | | | | | | | |  | | |  |  |  | | |
 | 5:33 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | 5:28 |
 | — | — | — | — | 7:45 | — | — | — | — | — | — | — | 7:47 | — | — | — | — | — | — | — | 7:49 | — | — | 7:50 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 6 | 1 | |
Temp °C | 8 | 10 | 16 | 19 | 20 | 17 | 14 | 12 | 12 | 14 | 21 | 26 | 24 | 20 | 17 | 16 | 16 | 16 | 18 | 18 | 16 | 14 | 13 | 13 |
3 | 5 | 9 | 12 | 15 | 13 | 9 | 8 | 8 | 10 | 17 | 21 | 18 | 15 | 13 | 12 | 13 | 13 | 15 | 15 | 12 | 10 | 10 | 10 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | S 6 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 11 | E 10 | E 10 | E 9 | E 10 | E 10 | E 10 | SSE 6 |
 kJ | 275 | 202 | 127 | 78 | 57 | 49 | 13 | 6 | 6 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 127 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SE 10 | SSE 10 | SSE 9 | E 9 | — | — | — | — | E 18 | — | — | — | — | — | — | — | E 16 | E 16 | E 16 | E 16 | E 16 | E 10 |
| kJ | 20 | 10 | 24 | 9 | 7 | 24 | — | — | — | — | 6 | — | — | — | — | — | — | — | 5 | 5 | 5 | 5 | 5 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 12 | — | — | E 12 | E 16 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | 3 | 5 |
Wind waves Height (m) Direction Period (s) | SW 3 | SW 3 | SW 3 | SW 4 | SSW 4 | S 7 | SSE 7 | S 6 | S 6 | S 5 | S 6 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | S 7 | S 7 | S 7 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | SSE 6 |
| kJ | 2 | 5 | 6 | 10 | 10 | 124 | 186 | 108 | 62 | 67 | 91 | 122 | 285 | 529 | 317 | 240 | 240 | 206 | 206 | 240 | 349 | 260 | 167 | 188 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 14 | 2017 | 870 | 0 | 0 | 198 | 198 | 198 | 198 | 2017 | 384 | 2075 | 2017 | 1691 | 1297 | 1691 | 384 | 1691 | 2015 | 198 | 1296 | 1297 | 391 |
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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