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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 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 12AM is: 1.3m 6s primary swell from a South-southeast direction and 0.2m 10s secondary swell from a East-southeast direction (forecast issued at 07:00pm May 13). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 May) | 3.5ft (1.1m) | 5s |
| Afternoon (14 May) | 5ft (1.6m) | 6s |
| Evening (14 May) | 6ft (1.9m) | 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 33mm), heaviest during Thu night. Warm (max 24°C on Sat afternoon, min 9°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 13 | Thursday 14 | Friday 15 | Sat 16 | |||||||||||||||||||||
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 7 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 5 | SE 5 | 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 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | |
15 | 115 | 111 | 93 | 77 | 72 | 69 | 172 | 190 | 255 | 421 | 381 | 415 | 631 | 1024 | 855 | 880 | 598 | 509 | 386 | 328 | 220 | 181 | 146 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross | cross | cross-on | cross-on | cross-on | on | on | on | cross-on | on | on | on | cross-on | cross-on | cross-on | glassy | off | cross-off | cross-off | off | off | off | |
High Tide | 9:02PM3.29m | 9:32AM3.12m | 9:51PM3.51m | 10:25AM3.25m | 10:40PM3.71m | 11:17AM3.36m | ||||||||||||||||||
Low Tide | 2:45PM0.68m | 3:23AM0.50m | 3:35PM0.56m | 4:14AM0.27m | 4:25PM0.45m | 5:06AM0.07m | ||||||||||||||||||
 |  |  | | |  | |  | |  | | | | | | | | | | |  |  | | | |
 | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — |
 | 7:55 | — | — | — | — | — | — | — | 7:58 | — | — | — | — | — | — | — | 7:59 | — | — | — | — | — | — | 8:00 |
— | — | — | — | — | — | — | 1 | 4 | 14 | 11 | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | |
Temp °C | 13 | 15 | 13 | 12 | 12 | 13 | 13 | 11 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 9 | 9 | 10 | 12 | 18 | 22 |
11 | 11 | 9 | 9 | 8 | 10 | 9 | 7 | 8 | 5 | 7 | 7 | 6 | 5 | 5 | 5 | 6 | 10 | 7 | 6 | 7 | 9 | 15 | 19 | |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | — | ESE 10 | — | — | — | — | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 |
 kJ | 15 | 10 | 10 | 10 | 10 | 10 | 10 | — | 10 | — | — | — | — | 631 | 1024 | 855 | 880 | 598 | 509 | 386 | 328 | 220 | 181 | 146 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | — | — | — | E 7 | E 12 | E 13 | — | E 12 | — | — | — | — | — | SE 11 | SE 10 | SSE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SSE 10 | SSE 8 | SSE 10 |
| kJ | 10 | — | — | — | 4 | 3 | 3 | — | 3 | — | — | — | — | — | 399 | 154 | 171 | 117 | 90 | 90 | 68 | 63 | 48 | 36 |
Swell 3 Height (m) Direction Period (s) | E 7 | — | — | — | E 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 5 | SE 5 | SE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 | ESE 7 | — | E 9 | — | — | — | — | WSW 2 | WSW 2 | WSW 3 | SW 3 | — |
| kJ | 12 | 115 | 111 | 93 | 77 | 72 | 69 | 172 | 190 | 255 | 421 | 381 | 415 | — | 632 | — | — | — | — | 2 | 1 | 1 | 3 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 855 | 916 | 618 | 395 | 529 | 352 | 287 | 198 | 198 | 182 | 92 | 39 | 98 | 98 | 39 | 39 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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