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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 Saturday 09 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
8.8° C
(Which is slightly warmer than usual)How big are the waves at Costellos today?
The current surf forecast for Costellos at 12PM is: 0.7m 9s primary swell from a East-southeast direction and 0.2m 7s secondary swell from a South-southeast direction, 0.4m 7s secondary swell from a South-southeast direction (forecast issued at 07:00am May 09). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 May) | 2.5ft (0.8m) | 9s |
| Afternoon (09 May) | 2.5ft (0.7m) | 9s |
| Evening (09 May) | 2ft (0.6m) | 9s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 16mm), heaviest on Sat afternoon. Very mild (max 18°C on Sun afternoon, min 7°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 9 | Sunday 10 | Monday 11 | Tue 12 | |||||||||||||||||||||
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 | ESE 9 | ESE 9 | E 9 | E 9 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | SSE 7 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 9 | SE 8 | SE 10 | SE 9 | SE 8 | |
119 | 94 | 86 | 84 | 57 | 57 | 74 | 103 | 77 | 75 | 80 | 67 | 54 | 47 | 49 | 73 | 123 | 182 | 166 | 146 | 153 | 204 | 142 | 120 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | glassy | glassy | on | on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross | glassy | glassy | cross | cross-off | cross-off | cross-off | |
High Tide | 4:58AM2.83m | 5:44PM2.66m | 5:52AM2.80m | 6:35PM2.74m | 6:48AM2.81m | 7:25PM2.88m | ||||||||||||||||||
Low Tide | 11:27AM0.91m | 11:43PM1.18m | 12:16PM0.91m | 00:40AM1.10m | 1:06PM0.87m | 1:36AM0.94m | ||||||||||||||||||
 |  |  | | |  |  |  | | | |  | |  | | | | | | | | | | | |
 | 5:26 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | 5:22 |
 | — | — | — | — | 7:52 | — | — | — | — | — | — | — | 7:52 | — | — | — | — | — | — | — | 7:53 | — | — | 7:54 |
— | — | 2 | 4 | 5 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 7 | 9 | 7 | 8 | 9 | 11 | 12 | 11 | 11 | 12 | 14 | 16 | 18 | 17 | 15 | 12 | 11 | 9 | 10 | 11 | 12 | 12 | 10 | 8 |
4 | 6 | 5 | 6 | 7 | 9 | 9 | 9 | 9 | 9 | 12 | 15 | 16 | 15 | 11 | 8 | 7 | 6 | 8 | 9 | 9 | 9 | 6 | 4 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | SSE 6 | E 9 | SSE 6 | SSE 6 | E 9 | SE 6 | SE 6 | SSE 7 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 9 | SE 8 | SE 10 | SE 9 | SE 8 |
 kJ | 119 | 94 | 86 | 84 | 57 | 57 | 56 | 103 | 40 | 75 | 80 | 39 | 54 | 47 | 43 | 73 | 123 | 182 | 166 | 146 | 153 | 204 | 142 | 120 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 7 | SE 11 | E 13 | E 9 | SE 10 | E 9 | E 9 | ESE 11 | E 9 | E 9 | E 8 | ESE 8 | E 8 | — | — | SE 8 | E 9 | E 8 | E 8 | E 8 |
| kJ | 16 | 5 | 5 | 9 | 11 | 4 | 4 | 56 | 4 | 40 | 40 | 12 | 39 | 39 | 49 | 67 | 43 | — | — | 55 | 55 | 66 | 64 | 60 |
Swell 3 Height (m) Direction Period (s) | SE 11 | SE 11 | — | SE 11 | SE 11 | E 13 | E 13 | SE 10 | E 13 | SE 10 | SE 11 | E 16 | ESE 11 | SE 11 | SE 11 | E 16 | — | — | — | E 15 | E 15 | SE 14 | SE 14 | SE 14 |
| kJ | 5 | 5 | — | 5 | 5 | 4 | 4 | 4 | 3 | 4 | 5 | 5 | 12 | 18 | 19 | 5 | — | — | — | 4 | 4 | 8 | 8 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | SSE 7 | — | SSE 4 | SSE 5 | SSE 6 | — | SSE 6 | — | — | SSE 6 | — | — | — | — | — | — | — | — | — | — | — | NE 3 |
| kJ | — | — | 16 | — | 5 | 21 | 74 | — | 77 | — | — | 67 | — | — | — | — | — | — | — | — | — | — | — | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 60 | 350 | 198 | 198 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 14 | 0 | 0 | 0 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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