Surf Forecasts:
How big are the waves at Costellos today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 1ft (0.3m), 9s period with SE swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 1ft (0.3m), 9s period with SE swell.
- Evening surf: Evening surf (18 Aug, local time) - 3ft (0.9m), 9s period with SE swell.
The current surf forecast for Costellos at 4AM is: 0.3m 9s primary swell from a Southeast direction and 0.4m 4s secondary swell from a Southeast direction (forecast issued at 07:00pm August 17). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 1ft (0.3m) | 9s |
| Afternoon (18 Aug) | 1ft (0.3m) | 9s |
| Evening (18 Aug) | 3ft (0.9m) | 9s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 19°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 5 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SE 7 | SE 9 | SE 7 | SE 7 | SE 7 | SE 7 | ESE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 16 | 12 | 13 | 13 | 12 | 12 | 12 | 12 | 64 | 126 | 97 | 86 | 52 | 93 | 50 | 49 | 55 | 46 | 29 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | on | on | cross | glassy | glassy | glassy | cross | glassy | cross | glassy | cross-off |
High Tide | 3:20PM3.38m | 3:47AM3.10m | 4:07PM3.23m | 4:39AM2.89m | 4:56PM3.09m | ||||||||||||||
Low Tide | 9:37PM0.49m | 9:52AM0.68m | 10:28PM0.64m | 10:40AM0.88m | |||||||||||||||
 |  |  | | | | |  | |  | | | | | | | | | | |
 | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | 7:43 | — | — | — | — | — | — | — | 7:40 | — | — | — | — | — | — | — | 7:38 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 19 | 19 | 19 | 24 | 27 | 27 | 25 | 23 |
Feels °C | 23 | 20 | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 21 | 22 | 21 | 21 | 21 | 25 | 27 | 27 | 26 | 22 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SSE 4 | SE 4 | SE 4 | SE 5 | SE 5 | SE 5 | SE 9 | SE 9 | SE 8 | SE 8 | SE 7 | SE 9 | SE 7 | SE 7 | SE 9 | SE 7 | ESE 7 |
| kJ | 12 | 12 | 6 | 4 | 7 | 8 | 12 | 12 | 64 | 126 | 97 | 86 | 52 | 93 | 50 | 49 | 19 | 46 | 29 |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | SE 9 | ESE 5 | E 4 | — | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | SSE 3 |
| kJ | 2 | 2 | 13 | 13 | 12 | 12 | 11 | 12 | 8 | 6 | — | 22 | 29 | 21 | 21 | 21 | 21 | 18 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SE 5 | — | — | — | — | — | — | — | — | — | SE 8 |
| kJ | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — | — | — | 18 |
Wind waves Height (m) Direction Period (s) | SSE 4 | SSE 4 | — | — | — | — | E 4 | E 4 | — | — | — | — | — | — | — | — | SE 7 | S 3 | S 3 |
| kJ | 16 | 9 | — | — | — | — | 5 | 5 | — | — | — | — | — | — | — | — | 55 | 6 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 301 | 186 | 186 | 186 | 186 | 186 | 168 | 182 | 182 | 38 | 14 | 0 | 0 | 0 | 14 | 0 | 3 | 0 | 0 |
Best forecast wave conditions in New Hampshire | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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