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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 23 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 1.0°C warmer than normal for this time of year)How big are the waves at Costellos today?
The current surf forecast for Costellos at 4PM is: 0.3m 10s primary swell from a Southeast direction and 0.1m 14s secondary swell from a East direction, 0.3m 3s secondary swell from a East-northeast direction (forecast issued at 07:00am May 23). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 May) | 1ft (0.3m) | 10s |
| Afternoon (23 May) | 1ft (0.3m) | 10s |
| Evening (23 May) | 1ft (0.3m) | 10s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 18mm), heaviest on Sun night. Very mild (max 17°C on Mon afternoon, min 7°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | |||||||||||||||||||||
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 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | ESE 9 | SE 4 | SE 4 | SE 5 | SE 5 | SE 6 | SE 6 | SE 6 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | |
15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 8 | 6 | 13 | 22 | 47 | 87 | 145 | 200 | 206 | 227 | 233 | 260 | 238 | 213 | 203 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross | cross-off | off | cross-off | cross-on | cross-on | glassy | |
High Tide | 5:13AM3.32m | 5:57PM3.16m | 6:16AM3.16m | 6:56PM3.14m | 7:19AM3.05m | 7:51PM3.15m | ||||||||||||||||||
Low Tide | 11:37AM0.43m | 00:05AM0.72m | 12:36PM0.56m | 1:09AM0.73m | 1:32PM0.67m | |||||||||||||||||||
 |  | | | | |  | | | | |  | | |  | | | | |  |  | | | | |
 | 5:13 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — | — | 5:11 | — | — | — | — | — | — | 5:09 |
 | — | — | — | — | — | 8:07 | — | — | — | — | — | — | — | 8:07 | — | — | — | — | — | — | — | 8:08 | — | 8:08 |
— | — | — | — | — | — | — | — | — | — | — | 2 | 4 | 5 | 5 | 2 | — | — | — | — | — | — | — | — | |
Temp °C | 15 | 14 | 12 | 13 | 12 | 13 | 13 | 12 | 11 | 11 | 10 | 7 | 7 | 7 | 9 | 10 | 10 | 9 | 9 | 11 | 17 | 17 | 14 | 13 |
12 | 10 | 8 | 9 | 9 | 10 | 10 | 9 | 8 | 7 | 6 | 3 | 3 | 2 | 5 | 6 | 7 | 6 | 6 | 10 | 16 | 16 | 14 | 13 | |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ENE 3 | SE 9 | SE 9 | SE 9 | ESE 9 | SSE 7 | SSE 7 | SSE 7 | SE 10 | SE 6 | E 18 | E 17 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 |
 kJ | 15 | 15 | 15 | 14 | 14 | 2 | 14 | 14 | 14 | 8 | 5 | 5 | 5 | 4 | 87 | 6 | 6 | 206 | 227 | 233 | 260 | 238 | 213 | 203 |
Swell 2 Height (m) Direction Period (s) | S 3 | — | E 14 | E 14 | E 14 | SE 10 | ENE 3 | ENE 3 | ENE 3 | E 13 | SE 9 | SE 9 | SE 10 | SE 12 | E 18 | E 12 | — | E 16 | E 16 | E 16 | E 16 | E 16 | E 16 | E 16 |
| kJ | 1 | — | 4 | 4 | 4 | 14 | 1 | 1 | 1 | 3 | 3 | 3 | 4 | 6 | 6 | 3 | — | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | E 14 | E 14 | — | — | — | — | SE 13 | E 12 | E 12 | E 18 | E 18 | E 18 | E 18 | E 18 | SE 12 | — | — | S 16 | S 16 | — | SE 16 | SE 16 | E 16 | — |
| kJ | 4 | 4 | — | — | — | — | 6 | 3 | 3 | 6 | 6 | 6 | 6 | 6 | 6 | — | — | 5 | 5 | — | 10 | 10 | 5 | — |
Wind waves Height (m) Direction Period (s) | — | — | NE 2 | ENE 3 | ENE 3 | — | — | SSE 2 | SSE 2 | SE 3 | SE 4 | SE 4 | SE 5 | SE 5 | — | SE 6 | SE 6 | — | — | — | — | — | — | — |
| kJ | — | — | 1 | 1 | 2 | — | — | 1 | 1 | 3 | 6 | 13 | 22 | 47 | — | 145 | 200 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 276 | 870 | 870 | 848 | 198 | 186 | 186 | 787 | 787 | 787 | 567 | 457 | 457 | 333 | 167 | 162 | 44 | 5 | 0 | 0 | 0 | 60 | 5 | 0 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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