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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 Wednesday 13 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
8.9° C
(Which is normal for this time of year)How big are the waves at Costellos today?
The current surf forecast for Costellos at 12PM is: 0.4m 7s primary swell from a East-southeast direction and 0.2m 10s secondary swell from a East-southeast direction, 0.4m 4s secondary swell from a South-southeast direction (forecast issued at 07:00am May 13). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 1.5ft (0.5m) | 7s |
| Afternoon (13 May) | 1.5ft (0.4m) | 7s |
| Evening (13 May) | 5ft (1.5m) | 6s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 35mm), heaviest during Thu night. Very mild (max 16°C on Wed night, min 8°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | Sat 16 | |||||||||||||||||||||
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 10 | SE 10 | ESE 7 | ESE 7 | SSE 4 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 5 | SE 6 | SE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | |
27 | 27 | 19 | 19 | 29 | 166 | 132 | 87 | 74 | 56 | 136 | 129 | 184 | 312 | 437 | 407 | 366 | 865 | 943 | 756 | 804 | 586 | 441 | 378 | |
Wind (km/h) | ||||||||||||||||||||||||
on | glassy | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross-off | off | off | |
High Tide | 8:39AM2.99m | 9:02PM3.29m | 9:32AM3.12m | 9:51PM3.51m | 10:25AM3.25m | 10:40PM3.71m | ||||||||||||||||||
Low Tide | 2:30AM0.74m | 2:45PM0.68m | 3:23AM0.50m | 3:35PM0.56m | 4:14AM0.27m | 4:25PM0.45m | ||||||||||||||||||
 |  | |  | | | | | | | | |  |  |  | | | | | | |  | | | |
 | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | 5:18 |
 | — | — | — | — | 7:55 | — | — | — | — | — | — | — | 7:58 | — | — | — | — | — | — | — | 7:59 | — | — | 8:00 |
— | — | — | 1 | — | — | — | — | — | — | — | 1 | 10 | 17 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | |
Temp °C | 10 | 9 | 10 | 10 | 15 | 16 | 13 | 13 | 12 | 13 | 13 | 11 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 9 | 10 | 10 | 11 | 10 |
7 | 7 | 7 | 6 | 11 | 12 | 9 | 10 | 9 | 10 | 9 | 7 | 6 | 6 | 5 | 5 | 6 | 5 | 3 | 5 | 8 | 8 | 9 | 7 | |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | — | ESE 10 | — | E 11 | — | — | E 11 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 |
 kJ | 26 | 27 | 19 | 19 | 15 | 10 | 10 | 10 | 10 | 10 | — | 10 | — | 9 | — | — | 20 | 658 | 943 | 756 | 804 | 586 | 441 | 378 |
Swell 2 Height (m) Direction Period (s) | SSE 4 | SE 10 | ESE 10 | ESE 10 | ESE 10 | — | — | — | E 7 | — | — | E 12 | — | — | — | — | — | — | — | SE 11 | SSE 10 | SE 10 | SE 9 | SE 9 |
| kJ | 7 | 26 | 10 | 10 | 20 | — | — | — | 1 | — | — | 3 | — | — | — | — | — | — | — | 123 | 182 | 117 | 101 | 99 |
Swell 3 Height (m) Direction Period (s) | SE 10 | — | E 7 | E 7 | — | — | — | — | E 13 | — | — | — | — | — | — | — | — | — | — | SE 12 | — | — | — | — |
| kJ | 27 | — | 1 | 1 | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | 37 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SE 4 | SSE 4 | SSE 3 | SSE 4 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 5 | SE 6 | SE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | ESE 9 | ESE 9 | — | — | — | — | W 2 |
| kJ | — | 4 | 5 | 3 | 29 | 166 | 132 | 87 | 74 | 56 | 136 | 129 | 184 | 312 | 437 | 407 | 366 | 865 | 641 | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 126 | 0 | 1619 | 1624 | 1189 | 916 | 458 | 443 | 642 | 395 | 186 | 198 | 168 | 182 | 96 | 98 | 98 | 39 | 98 | 98 | 5 | 0 | 0 | 0 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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