Surf Forecasts:
How big are the waves at Costellos today (17 Aug):
- Afternoon surf: Afternoon surf (17 Aug, local time) - 0.5ft (0.2m), 9s period with ESE swell.
- Evening surf: Evening surf (17 Aug, local time) - 2.5ft (0.8m), 4s period with S swell.
The current surf forecast for Costellos at 12AM is: 1.1m 5s primary swell from a South direction and 0.1m 9s secondary swell from a Southeast direction (forecast issued at 07:00pm August 16). The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | - | - |
| Afternoon (17 Aug) | 0.5ft (0.2m) | 9s |
| Evening (17 Aug) | 2.5ft (0.8m) | 4s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 14mm), heaviest on Mon morning. Warm (max 27°C on Wed afternoon, min 18°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | |||||||||||||||||
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 | S 4 | S 5 | S 5 | S 5 | S 5 | S 5 | S 5 | SSE 5 | SSE 5 | SSE 5 | SSE 5 | SE 5 | SE 5 | SE 6 | ESE 6 | SE 8 | SE 8 | SE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 12 | 12 | 52 | 60 | 48 | 43 | 44 | 45 | 51 | 48 | 39 | 33 | 32 | 29 | 31 | 37 | 166 | 129 | 120 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | on | cross-on | cross | cross | cross-on | cross-on | cross-on | on | glassy |
High Tide | 2:34PM3.49m | 2:58AM3.32m | 3:20PM3.38m | 3:47AM3.10m | 4:07PM3.23m | ||||||||||||||
Low Tide | 8:47PM0.35m | 9:06AM0.47m | 9:37PM0.49m | 9:52AM0.68m | 10:28PM0.64m | ||||||||||||||
 |  | | |  |  | | | | | | | | |  | | |  |  | |
 | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — |
 | 7:44 | — | — | — | — | — | — | — | 7:43 | — | — | — | — | — | — | — | 7:40 | — | — |
mm | — | — | — | — | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — |
Temp °C | 21 | 22 | 21 | 20 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 20 | 19 | 19 |
Feels °C | 20 | 21 | 18 | 18 | 18 | 18 | 18 | 19 | 21 | 22 | 23 | 22 | 20 | 20 | 19 | 19 | 21 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | ESE 8 | ESE 8 | SE 8 | SE 8 | SE 9 | SE 9 | SSE 5 | SSE 5 | SE 5 | SE 5 | SE 6 | ESE 6 | SE 8 | SE 8 | SE 8 |
| kJ | 12 | 12 | 3 | 3 | 7 | 7 | 11 | 11 | 12 | 12 | 39 | 33 | 32 | 29 | 31 | 37 | 166 | 129 | 120 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SE 8 | SE 9 | SE 9 | ESE 9 | ESE 9 | SE 8 | SE 8 | NE 4 | ENE 4 | ENE 4 |
| kJ | — | — | — | — | — | — | — | — | — | 2 | 13 | 3 | 8 | 7 | 11 | 23 | 14 | 8 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | S 4 | S 5 | S 5 | S 5 | S 5 | S 5 | S 5 | SSE 5 | SSE 5 | — | — | — | — | NNE 2 | NE 4 | — | — | — |
| kJ | — | 12 | 52 | 60 | 48 | 43 | 44 | 45 | 51 | 48 | — | — | — | — | 1 | 10 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 2786 | 1693 | 1908 | 1908 | 862 | 367 | 301 | 273 | 198 | 198 | 162 | 162 | 168 | 168 | 186 | 168 | 39 | 118 | 0 |
Best forecast wave conditions in New Hampshire | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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