- Forecast
- Maps
- Live
- Weather State
- Spot Information
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 27 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
11.7° C
(Which is slightly warmer than usual)How big are the waves at Costellos today (27 May):
- Morning surf: Morning surf (27 May, local time) - 2ft (0.6m), 7s period with SE swell.
- Afternoon surf: Afternoon surf (27 May, local time) - 2ft (0.6m), 7s period with SSE swell.
- Evening surf: Evening surf (27 May, local time) - 1.5ft (0.5m), 7s period with SE swell.
The current surf forecast for Costellos at 10AM is: 0.6m 7s primary swell from a Southeast direction and 0.4m 4s secondary swell from a South direction (forecast issued at 07:00am May 27). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 May) | 2ft (0.6m) | 7s |
| Afternoon (27 May) | 2ft (0.6m) | 7s |
| Evening (27 May) | 1.5ft (0.5m) | 7s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 17mm), heaviest on Thu afternoon. Warm (max 27°C on Wed afternoon, min 7°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||||||
Wednesday 27 | Thursday 28 | Friday 29 | Sat 30 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SSE 7 | SE 7 | SE 7 | SSE 7 | SSE 7 | SE 7 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SSE 8 | E 9 | E 9 | NE 4 | NE 4 | ENE 6 | SE 8 | SSE 4 | S 4 | S 4 | SSE 5 | |
68 | 33 | 31 | 42 | 31 | 22 | 28 | 16 | 17 | 11 | 10 | 6 | 4 | 6 | 6 | 6 | 7 | 6 | 7 | 17 | 13 | 16 | 50 | 78 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | off | cross-off | glassy | cross-on | cross-on | cross | cross | off | |
High Tide | 9:11AM2.94m | 9:26PM3.20m | 9:59AM2.93m | 10:08PM3.24m | 10:43AM2.93m | 10:48PM3.27m | ||||||||||||||||||
Low Tide | 3:01AM0.66m | 3:12PM0.80m | 3:49AM0.60m | 3:56PM0.83m | 4:33AM0.55m | 4:37PM0.84m | ||||||||||||||||||
 |  |  | |  | |  | | | |  | | |  | |  | | | | | | |  | | |
 | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | 5:07 |
 | — | — | — | — | — | 8:09 | — | — | — | — | — | — | — | 8:10 | — | — | — | — | — | — | — | 8:12 | — | 8:13 |
— | — | — | — | — | — | — | — | — | — | 2 | 3 | 3 | 2 | — | — | — | — | — | — | — | 3 | 3 | 1 | |
Temp °C | 17 | 20 | 25 | 27 | 26 | 23 | 19 | 16 | 13 | 15 | 15 | 14 | 14 | 15 | 13 | 12 | 11 | 12 | 15 | 13 | 12 | 12 | 13 | 10 |
14 | 18 | 23 | 24 | 24 | 20 | 17 | 14 | 11 | 13 | 14 | 13 | 13 | 13 | 11 | 11 | 10 | 10 | 13 | 9 | 7 | 10 | 8 | 6 | |
Swell 1 Height (m) Direction Period (s) | SSE 7 | SE 7 | SE 7 | SSE 7 | SSE 7 | SE 7 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SSE 8 | SSE 8 | SSE 8 | NE 4 | NE 4 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | E 10 | SSE 5 |
 kJ | 68 | 33 | 31 | 42 | 31 | 22 | 28 | 16 | 17 | 11 | 10 | 6 | 4 | 6 | 6 | 6 | 7 | 4 | 7 | 7 | 12 | 6 | 16 | 78 |
Swell 2 Height (m) Direction Period (s) | E 15 | E 15 | S 4 | E 14 | E 14 | E 14 | E 13 | E 13 | NE 4 | E 13 | — | NE 4 | ENE 4 | ENE 4 | E 9 | E 9 | SSE 8 | SSE 8 | SSE 8 | E 8 | E 8 | E 8 | ENE 5 | E 9 |
| kJ | 4 | 4 | 5 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | — | 2 | 1 | 1 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 3 | 27 |
Swell 3 Height (m) Direction Period (s) | — | — | E 15 | — | E 14 | — | E 14 | E 14 | E 13 | E 13 | — | E 11 | SE 8 | E 9 | — | E 12 | E 9 | E 8 | E 8 | — | E 14 | SE 8 | E 15 | NE 5 |
| kJ | — | — | 4 | — | 4 | — | 4 | 4 | 4 | 3 | — | 2 | 3 | 2 | — | 3 | 6 | 6 | 5 | — | 4 | 3 | 4 | 1 |
Wind waves Height (m) Direction Period (s) | WSW 3 | SSW 4 | WSW 3 | WSW 3 | — | NNW 2 | NNE 3 | NE 3 | — | NE 4 | NE 4 | — | — | NE 4 | NE 4 | NE 4 | N 3 | — | — | SE 8 | SSE 4 | S 4 | S 4 | NW 2 |
| kJ | 3 | 8 | 2 | 2 | — | 1 | 2 | 3 | — | 2 | 2 | — | — | 2 | 2 | 4 | 2 | — | — | 17 | 13 | 16 | 50 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 14 | 14 | 38 | 0 | 38 | 38 | 395 | 163 | 162 | 182 | 186 | 186 | 186 | 186 | 227 | 232 | 227 | 227 | 227 | 232 | 227 | 493 | 493 | 493 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Costellos surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest