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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 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 (30 May):
- Morning surf: Morning surf (30 May, local time) - 10ft (3.0m), 7s period with ENE swell.
- Afternoon surf: Afternoon surf (30 May, local time) - 10ft (3.0m), 8s period with ENE swell.
- Evening surf: Evening surf (30 May, local time) - 8ft (2.4m), 8s period with ENE swell.
The current surf forecast for Costellos at 3PM is: 3.0m 8s primary swell from a East-northeast direction (forecast issued at 07:00am May 30). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 May) | 10ft (3.0m) | 7s |
| Afternoon (30 May) | 10ft (3.0m) | 8s |
| Evening (30 May) | 8ft (2.4m) | 8s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 21mm), heaviest during Sat morning. Very mild (max 16°C on Sun afternoon, min 6°C on Sat morning). Winds decreasing (near gales from the NE on Sat morning, calm by Sun morning). | ||||||||||||||||||||||||
Saturday 30 | Sunday 31 | Monday 1 | Tue 2 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ESE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | E 8 | E 9 | E 8 | E 8 | E 8 | E 7 | E 8 | E 8 | E 8 | E 8 | |
534 | 1071 | 1342 | 1375 | 929 | 634 | 730 | 363 | 275 | 223 | 235 | 234 | 169 | 167 | 140 | 151 | 140 | 140 | 86 | 210 | 193 | 191 | 173 | 116 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | cross-off | off | off | off | cross | cross-on | cross-on | cross-on | cross-on | glassy | off | off | |
High Tide | 11:25AM2.94m | 11:28PM3.30m | 12:06PM2.95m | 00:08AM3.31m | 12:47PM2.94m | 00:49AM3.29m | ||||||||||||||||||
Low Tide | 5:14AM0.50m | 5:18PM0.84m | 5:55AM0.47m | 5:58PM0.84m | 6:36AM0.47m | 6:39PM0.86m | ||||||||||||||||||
 |  | |  |  |  |  | |  | | | | | |  | | | | | |  | | | | |
 | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | 5:05 |
 | — | — | — | — | — | 8:13 | — | — | — | — | — | — | — | 8:14 | — | — | — | — | — | — | — | 8:15 | — | 8:15 |
6 | 8 | 7 | 4 | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | — | — | — | — | — | — | |
Temp °C | 9 | 7 | 6 | 8 | 10 | 10 | 9 | 8 | 8 | 10 | 15 | 15 | 16 | 13 | 12 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 11 | 11 |
-1 | -4 | -4 | -1 | 3 | 4 | 5 | 5 | 4 | 7 | 13 | 12 | 12 | 11 | 9 | 9 | 9 | 8 | 6 | 4 | 8 | 9 | 8 | 8 | |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | E 8 | E 9 | E 8 | E 8 | E 8 | E 7 | E 8 | E 8 | E 8 | E 8 |
 kJ | — | — | — | — | — | 634 | 466 | 363 | 275 | 223 | 235 | 234 | 169 | 167 | 140 | 151 | 140 | 140 | 86 | 210 | 193 | 191 | 173 | 116 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 7 | E 9 | E 9 | — | — | E 15 | E 15 | E 14 | SSW 3 | WSW 3 | W 3 | — | — | — | — | — | S 7 |
| kJ | — | — | — | — | — | — | — | 1 | 15 | 13 | — | — | 4 | 4 | 4 | 1 | 1 | 1 | — | — | — | — | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 13 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | ESE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | — | ENE 8 | — | — | NW 2 | — | — | S 3 | SSW 3 | WSW 2 | WNW 2 | W 3 | NE 3 | E 5 | — | — | — | — | — |
| kJ | 534 | 1071 | 1342 | 1375 | 929 | — | 730 | — | — | 1 | — | — | 1 | 3 | 1 | 1 | 3 | 5 | 46 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 69 | 83 | 192 | 625 | 625 | 911 | 0 | 0 | 0 | 0 | 0 | 55 | 5 | 0 | 0 | 0 | 5 | 44 | 144 | 186 | 39 | 0 | 0 | 0 |
Best forecast wave conditions in New Hampshire | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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