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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 Monday 25 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
11.2° C
(Which is slightly warmer than usual)How big are the waves at Costellos today?
The current surf forecast for Costellos at 8AM is: 1.7m 8s primary swell from a Southeast direction and 0.1m 16s secondary swell from a East direction (forecast issued at 01:00am May 25). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 May) | 5ft (1.6m) | 8s |
| Afternoon (25 May) | 4.5ft (1.4m) | 8s |
| Evening (25 May) | 4.5ft (1.3m) | 8s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 14mm), heaviest on Mon morning. Warm (max 27°C on Wed afternoon, min 10°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Monday 25 | Tuesday 26 | Wednesday 27 | ||||||||||||||||||||||
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 6 | 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 | SE 8 | SSE 7 | SE 7 | SSE 7 | SE 7 | SE 7 | SE 7 | SE 7 | |
194 | 277 | 352 | 311 | 284 | 233 | 216 | 211 | 192 | 192 | 192 | 167 | 122 | 155 | 71 | 58 | 45 | 70 | 56 | 35 | 24 | 23 | 16 | 16 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross-on | cross | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | off | off | off | cross-off | glassy | cross-off | cross-off | |
High Tide | 7:19AM3.05m | 7:51PM3.15m | 8:17AM2.97m | 8:41PM3.17m | 9:11AM2.94m | 9:26PM3.20m | ||||||||||||||||||
Low Tide | 1:09AM0.73m | 1:32PM0.67m | 2:08AM0.71m | 2:24PM0.75m | 3:01AM0.66m | 3:12PM0.80m | ||||||||||||||||||
 |  |  |  |  |  | |  | | | | | | | | | | | |  |  | | |  | |
 | — | 5:11 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:08 | — | — | — | — | — | — | — | 8:08 | — | — | — | — | — | — | — | 8:09 | — |
1 | — | 1 | 8 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | |
Temp °C | 9 | 10 | 10 | 10 | 13 | 21 | 21 | 17 | 16 | 15 | 17 | 21 | 24 | 24 | 22 | 19 | 17 | 17 | 20 | 24 | 27 | 25 | 19 | 17 |
6 | 9 | 9 | 8 | 12 | 20 | 20 | 16 | 15 | 14 | 16 | 18 | 21 | 20 | 19 | 17 | 15 | 15 | 18 | 23 | 26 | 26 | 20 | 17 | |
Swell 1 Height (m) Direction Period (s) | E 18 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | E 15 | SE 8 | SE 8 | SE 8 | SSE 7 | SE 7 | SSE 7 | SE 7 | SE 7 | SE 7 | SE 7 |
 kJ | 6 | 277 | 352 | 311 | 284 | 233 | 216 | 211 | 192 | 192 | 192 | 167 | 122 | 4 | 71 | 58 | 45 | 70 | 56 | 35 | 24 | 23 | 16 | 16 |
Swell 2 Height (m) Direction Period (s) | — | E 17 | 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 | E 15 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 |
| kJ | — | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 18 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | S 15 | — | — | — | — | E 15 | E 15 | — | E 15 | E 14 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — | — | 4 | 4 | — | 4 | 4 | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 6 | — | — | — | — | — | — | — | — | — | — | — | S 3 | SE 8 | SSE 4 | SSE 5 | SW 3 | WSW 3 | — | WSW 3 | — | — | — | — |
| kJ | 194 | — | — | — | — | — | — | — | — | — | — | — | 2 | 155 | 28 | 23 | 2 | 2 | — | 2 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 162 | 39 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 14 | 92 | 182 | 14 | 0 | 0 | 0 | 38 | 198 | 458 | 199 | 163 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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