Surf Forecasts:
How big are the waves at Costellos today (20 Jul):
- Morning surf: Morning surf (20 Jul, local time) - 1ft (0.3m), 6s period with SE swell.
- Afternoon surf: Afternoon surf (20 Jul, local time) - 1.5ft (0.4m), 8s period with SSE swell.
- Evening surf: Evening surf (20 Jul, local time) - 3.5ft (1.0m), 4s period with S swell.
The current surf forecast for Costellos at 9PM is: 1.0m 4s primary swell from a South direction and 0.1m 12s secondary swell from a Southeast direction, 0.1m 12s secondary swell from a Southeast direction (forecast issued at 01:00pm July 20). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jul) | 1ft (0.3m) | 6s |
| Afternoon (20 Jul) | 1.5ft (0.4m) | 8s |
| Evening (20 Jul) | 3.5ft (1.0m) | 4s |
Table - waves today at Costellos. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 13mm), heaviest on Tue night. Warm (max 27°C on Wed afternoon, min 15°C on Wed night). Winds increasing (light winds from the SSW on Mon night, fresh winds from the S by Tue night). | |||||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 4 | S 4 | S 5 | S 5 | S 4 | S 4 | SSE 4 | SSE 5 | SSE 5 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 6 | SSE 7 | SSE 7 | SSE 8 | SSE 7 | SSE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 7 | 23 | 13 | 38 | 71 | 29 | 20 | 13 | 24 | 74 | 106 | 101 | 223 | 269 | 205 | 186 | 217 | 207 | 456 | 404 | 191 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross | off | off | off |
High Tide | 4:48PM3.25m | 5:15AM2.98m | 5:40PM3.14m | 6:12AM2.81m | 6:32PM3.05m | ||||||||||||||||
Low Tide | 10:31AM0.55m | 11:06PM0.64m | 11:21AM0.76m | 00:03AM0.74m | 12:13PM0.92m | ||||||||||||||||
 | | | |  | |  |  | | | |  |  |  | | |  | |  | | | |
 | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — |
 | — | — | — | 8:15 | — | — | — | — | — | — | — | 8:15 | — | — | — | — | — | — | — | 8:14 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 9 | 1 | — | — | — | — | 1 | — | — |
Temp °C | 24 | 26 | 26 | 23 | 21 | 18 | 17 | 18 | 22 | 23 | 22 | 19 | 21 | 21 | 21 | 22 | 26 | 27 | 27 | 25 | 21 |
Feels °C | 22 | 23 | 22 | 20 | 18 | 16 | 16 | 17 | 19 | 19 | 19 | 17 | 18 | 21 | 21 | 23 | 25 | 26 | 28 | 23 | 19 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SE 12 | SE 12 | SE 12 | E 12 | SE 8 | SE 8 | SE 8 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 6 | SSE 7 | — | SSE 8 | SSE 8 | SSE 7 |
| kJ | 7 | 6 | 6 | 6 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 149 | 116 | — | 253 | 294 | 191 |
Swell 2 Height (m) Direction Period (s) | SE 5 | SE 12 | SE 12 | SE 12 | SE 12 | E 12 | E 12 | S 7 | E 12 | — | — | — | — | — | — | SE 11 | ESE 8 | — | — | — | — |
| kJ | 1 | 6 | 6 | 6 | 6 | 3 | 3 | 1 | 3 | — | — | — | — | — | — | 5 | 22 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 12 | — | — | S 12 | SE 12 | S 7 | E 12 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 6 | 6 | — | — | 3 | 5 | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 8 | SSE 4 | S 4 | S 5 | S 5 | S 4 | S 4 | SSE 4 | SSE 5 | SSE 5 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 6 | SSE 7 | SSE 7 | SSE 8 | SSE 7 | — |
| kJ | — | 23 | 13 | 38 | 71 | 29 | 20 | 13 | 24 | 74 | 106 | 101 | 223 | 269 | 205 | 186 | 217 | 207 | 456 | 404 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 227 | 254 | 619 | 493 | 493 | 493 | 493 | 1290 | 1290 | 1290 | 1290 | 530 | 804 | 804 | 198 | 0 | 198 | 198 | 0 | 0 | 0 |
Best forecast wave conditions in New Hampshire | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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