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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 Saturday 30 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
13.0° C
(Which is 1.7°C warmer than normal for this time of year)How big are the waves at Costellos today (31 May):
- Morning surf: Morning surf (31 May, local time) - 3.5ft (1.1m), 7s period with E swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 3.5ft (1.1m), 8s period with E swell.
- Evening surf: Evening surf (31 May, local time) - 3.5ft (1.1m), 8s period with E swell.
The current surf forecast for Costellos at 1AM is: 1.6m 8s primary swell from a East direction and 0.4m 10s secondary swell from a East direction (forecast issued at 07:00pm May 30). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 3.5ft (1.1m) | 7s |
| Afternoon (31 May) | 3.5ft (1.1m) | 8s |
| Evening (31 May) | 3.5ft (1.1m) | 8s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Sun afternoon. Very mild (max 19°C on Tue afternoon, min 7°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 30 | Sunday 31 | Monday 1 | Tue 2 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ENE 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | E 8 | E 8 | E 8 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | |
672 | 475 | 355 | 268 | 186 | 127 | 92 | 169 | 173 | 177 | 151 | 144 | 133 | 130 | 86 | 68 | 68 | 91 | 113 | 91 | 91 | 68 | 50 | 51 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | off | cross-off | cross | on | on | on | cross-on | cross | cross-off | off | off | off | glassy | cross-on | |
High Tide | 11:28PM3.30m | 12:06PM2.95m | 00:08AM3.31m | 12:47PM2.94m | 00:49AM3.29m | 1:28PM2.91m | ||||||||||||||||||
Low Tide | 5:18PM0.84m | 5:55AM0.47m | 5:58PM0.84m | 6:36AM0.47m | 6:39PM0.86m | 7:17AM0.49m | ||||||||||||||||||
 |  |  |  | |  | | |  | |  | | | | | | | | | | | | | | |
 | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:05 | — | — | — |
 | — | 8:13 | — | — | — | — | — | — | — | 8:14 | — | — | — | — | — | — | — | 8:15 | — | — | — | — | — | 8:15 |
— | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | |
Temp °C | 9 | 10 | 9 | 8 | 7 | 11 | 16 | 15 | 14 | 13 | 11 | 10 | 9 | 10 | 9 | 10 | 11 | 12 | 11 | 11 | 12 | 13 | 18 | 19 |
2 | 5 | 5 | 4 | 3 | 8 | 13 | 12 | 10 | 11 | 9 | 8 | 6 | 7 | 5 | 6 | 8 | 9 | 7 | 8 | 9 | 11 | 16 | 15 | |
Swell 1 Height (m) Direction Period (s) | — | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | E 8 | E 8 | E 8 | E 9 | E 8 | E 8 | — | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
 kJ | — | 475 | 355 | 268 | 186 | 127 | 92 | 169 | 173 | 177 | 151 | 144 | 133 | — | 86 | 68 | 68 | 91 | 113 | 91 | 91 | 68 | 50 | 51 |
Swell 2 Height (m) Direction Period (s) | — | — | S 7 | E 10 | E 9 | E 9 | E 8 | — | — | E 14 | — | — | E 15 | — | — | — | E 5 | E 5 | SE 13 | E 13 | E 13 | SE 9 | SE 9 | SE 9 |
| kJ | — | — | 1 | 29 | 27 | 41 | 34 | — | — | 4 | — | — | 4 | — | — | — | 21 | 11 | 7 | 3 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 7 | S 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 13 | SE 9 | — | E 13 |
| kJ | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | — | 3 |
Wind waves Height (m) Direction Period (s) | ENE 8 | — | — | — | — | — | WNW 3 | — | — | — | — | — | — | E 8 | E 5 | E 5 | — | — | — | — | — | — | — | S 2 |
| kJ | 672 | — | — | — | — | — | 2 | — | — | — | — | — | — | 130 | 44 | 37 | — | — | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 625 | 618 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | 0 | 0 | 5 | 55 | 98 | 331 | 39 | 14 | 0 | 0 | 0 | 0 | 0 | 126 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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