Surf Forecasts:
How big are the waves at Castlerock today (03 Aug):
- Morning surf: Morning surf (03 Aug, local time) - 1.5ft (0.4m), 7s period with NW swell.
- Afternoon surf: Afternoon surf (03 Aug, local time) - 1ft (0.3m), 9s period with NNW swell.
- Evening surf: Evening surf (03 Aug, local time) - 2ft (0.6m), 4s period with ENE swell.
The current surf forecast for Castlerock at 4AM is: 0.4m 7s primary swell from a Northwest direction and 0.3m 8s secondary swell from a North-northwest direction (forecast issued at 12:00am August 03). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Aug) | 1.5ft (0.4m) | 7s |
| Afternoon (03 Aug) | 1ft (0.3m) | 9s |
| Evening (03 Aug) | 2ft (0.6m) | 4s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 12mm), heaviest on Tue afternoon. Very mild (max 19°C on Tue afternoon, min 13°C on Mon morning). Winds increasing (light winds from the SE on Sun night, fresh winds from the W by Wed morning). | ||||||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||||||||||
1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | E 4 | E 4 | ENE 4 | N 8 | N 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 10 | NW 7 | NW 6 | WNW 7 | WNW 7 | WNW 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 45 | 19 | 19 | 17 | 15 | 15 | 12 | 14 | 6 | 6 | 7 | 6 | 12 | 6 | 13 | 12 | 12 | 12 | 9 | 9 | 6 | 34 | 70 | 83 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | cross | cross-on | cross | cross-on |
High Tide | 9:26AM1.52m | 9:54PM1.75m | 10:04AM1.45m | 10:33PM1.64m | 10:49AM1.36m | |||||||||||||||||||
Low Tide | 3:47AM0.32m | 3:32PM0.20m | 4:19AM0.37m | 4:06PM0.30m | 4:58AM0.43m | 4:51PM0.41m | ||||||||||||||||||
 | |  |  |  | | | |  | | | | |  |  |  |  | | | | | | | | |
 | — | 5:37 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:41 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:27 | — | — | — | — | — | — | — | 9:24 | — | — | — | — | — | — | — | 9:22 | — |
mm | — | — | — | 1 | — | — | — | — | 1 | 1 | 1 | — | — | 1 | 2 | 1 | — | — | — | 1 | 1 | — | 1 | — |
Temp °C | 14 | 14 | 14 | 13 | 15 | 18 | 17 | 15 | 16 | 16 | 15 | 16 | 17 | 19 | 18 | 17 | 15 | 14 | 14 | 14 | 16 | 15 | 15 | 14 |
Feels °C | 12 | 13 | 13 | 11 | 11 | 14 | 13 | 13 | 12 | 12 | 12 | 15 | 17 | 18 | 18 | 17 | 13 | 11 | 10 | 10 | 11 | 11 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NNW 9 | NNW 9 | ENE 4 | N 8 | NNW 8 | NNW 8 | E 4 | ESE 4 | ESE 4 | E 4 | NNW 8 | NNW 8 | NNW 7 | NW 7 | NW 6 | NW 9 | W 10 | N 9 |
| kJ | 45 | 19 | 19 | 17 | 11 | 7 | 8 | 7 | 21 | 6 | 7 | 6 | 9 | 5 | 6 | 6 | 12 | 12 | 5 | 8 | 6 | 3 | 2 | 1 |
Swell 2 Height (m) Direction Period (s) | N 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NW 7 | NW 6 | N 8 | NW 6 | NW 6 | N 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | E 4 | E 3 | NNW 10 | NNW 10 | NW 10 | W 10 | N 10 | — |
| kJ | 5 | 12 | 14 | 15 | 15 | 15 | 7 | 2 | 6 | 2 | 2 | 1 | 12 | 6 | 13 | 12 | 1 | 1 | 9 | 9 | 4 | 2 | 2 | — |
Swell 3 Height (m) Direction Period (s) | — | W 10 | W 10 | — | W 10 | W 10 | — | — | NW 7 | — | — | — | — | NW 7 | NW 7 | NW 7 | W 7 | W 11 | — | — | N 7 | N 8 | — | — |
| kJ | — | 2 | 2 | — | 2 | 2 | — | — | 2 | — | — | — | — | 2 | 2 | 2 | 1 | 2 | — | — | 1 | 1 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 3 | E 4 | E 4 | ENE 4 | — | E 4 | ESE 4 | ESE 4 | — | — | — | — | — | — | — | — | WSW 2 | WNW 7 | WNW 7 | WNW 7 |
| kJ | — | — | — | — | 5 | 14 | 12 | 14 | — | 27 | 27 | 14 | — | — | — | — | — | — | — | — | 1 | 34 | 70 | 83 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 8 | 40 | 40 | 40 | 41 | 40 | 40 | 66 | 40 | 91 | 40 | 41 | 41 | 41 | 44 | 44 | 266 | 270 | 270 | 282 | 341 | 365 | 366 | 772 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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