Surf Forecasts:
How big are the waves at Castlerock today (05 Aug):
- Morning surf: Morning surf (05 Aug, local time) - 4.5ft (1.3m), 6s period with NW swell.
- Afternoon surf: Afternoon surf (05 Aug, local time) - 7ft (2.1m), 8s period with NW swell.
- Evening surf: Evening surf (05 Aug, local time) - 8ft (2.4m), 9s period with NNW swell.
The current surf forecast for Castlerock at 9AM is: 1.3m 6s primary swell from a Northwest direction and 0.4m 10s secondary swell from a North-northwest direction (forecast issued at 12:00am August 05). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 Aug) | 4.5ft (1.3m) | 6s |
| Afternoon (05 Aug) | 7ft (2.1m) | 8s |
| Evening (05 Aug) | 8ft (2.4m) | 9s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Wed morning. Very mild (max 19°C on Fri afternoon, min 12°C on Wed night). Winds decreasing (strong winds from the WNW on Wed afternoon, calm by Fri afternoon). | ||||||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||||||||||
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) | NNW 9 | NNW 10 | WNW 6 | NW 6 | NW 8 | NW 8 | NW 9 | NNW 9 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 6 | NW 6 | NNW 6 | NW 6 | NW 5 | NW 5 | NW 5 | WNW 7 | NW 8 | NW 10 | NW 10 | NW 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 34 | 37 | 49 | 126 | 453 | 686 | 870 | 789 | 532 | 310 | 168 | 107 | 60 | 37 | 22 | 15 | 9 | 10 | 7 | 37 | 105 | 281 | 370 | 286 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | glassy | cross-off |
High Tide | 10:33PM1.64m | 10:49AM1.36m | 11:20PM1.51m | 11:47AM1.27m | 00:27AM1.37m | 1:17PM1.21m | ||||||||||||||||||
Low Tide | 4:58AM0.43m | 4:51PM0.41m | 5:49AM0.51m | 5:54PM0.53m | 7:03AM0.58m | 7:32PM0.61m | ||||||||||||||||||
 | |  |  | | | |  |  |  |  |  | | | | | | | | | | | | | |
 | — | 5:41 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:22 | — | — | — | — | — | — | — | 9:21 | — | — | — | — | — | — | — | 9:19 | — |
mm | — | — | — | 2 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 13 | 12 | 12 | 13 | 15 | 15 | 16 | 14 | 13 | 12 | 12 | 14 | 17 | 19 | 19 | 16 |
Feels °C | 10 | 9 | 9 | 7 | 6 | 5 | 6 | 6 | 7 | 7 | 7 | 9 | 11 | 11 | 14 | 11 | 10 | 9 | 9 | 10 | 13 | 16 | 18 | 15 |
Swell 1 Height (m) Direction Period (s) | NNW 9 | NNW 10 | NNW 10 | NNW 10 | — | — | — | — | — | — | NNW 7 | W 10 | NNW 6 | NW 6 | NNW 6 | NW 6 | NW 5 | NW 5 | NW 5 | WNW 7 | NW 8 | NW 10 | NW 10 | NW 10 |
| kJ | 34 | 37 | 38 | 38 | — | — | — | — | — | — | 168 | 2 | 60 | 37 | 22 | 15 | 9 | 10 | 7 | 37 | 105 | 281 | 370 | 286 |
Swell 2 Height (m) Direction Period (s) | — | W 10 | — | — | — | — | — | — | — | — | W 10 | — | W 10 | W 10 | W 10 | W 10 | NNW 6 | NW 9 | NW 9 | — | — | — | — | — |
| kJ | — | 2 | — | — | — | — | — | — | — | — | 2 | — | 2 | 2 | 2 | 2 | 3 | 3 | 3 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 10 | W 10 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 4 | WNW 5 | WNW 6 | NW 6 | NW 8 | NW 8 | NW 9 | NNW 9 | NNW 8 | NNW 7 | — | NNW 7 | — | — | — | — | — | — | — | SW 2 | WSW 3 | — | — | — |
| kJ | 12 | 25 | 49 | 126 | 453 | 686 | 870 | 789 | 532 | 310 | — | 107 | — | — | — | — | — | — | — | 2 | 1 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 270 | 292 | 321 | 356 | 366 | 772 | 365 | 300 | 751 | 569 | 187 | 162 | 282 | 282 | 282 | 184 | 172 | 155 | 122 | 187 | 9 | 0 | 0 | 0 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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