Surf Forecasts:
How big are the waves at Castlerock today (09 Aug):
- Morning surf: Morning surf (09 Aug, local time) - 3ft (0.9m), 9s period with NW swell.
- Afternoon surf: Afternoon surf (09 Aug, local time) - 3ft (0.9m), 9s period with NW swell.
- Evening surf: Evening surf (09 Aug, local time) - 3ft (0.9m), 9s period with NW swell.
The current surf forecast for Castlerock at 3PM is: 0.9m 9s primary swell from a Northwest direction (forecast issued at 12:00pm August 09). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Aug) | 3ft (0.9m) | 9s |
| Afternoon (09 Aug) | 3ft (0.9m) | 9s |
| Evening (09 Aug) | 3ft (0.9m) | 9s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Sun morning. Warm (max 20°C on Tue afternoon, min 12°C on Sun night). Wind will be generally light. | |||||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | |||||||||||||||||||
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 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NNW 10 | NNW 9 | NNW 9 | N 9 | NNW 8 | NW 7 | NNW 8 | NW 7 | NNW 7 | N 8 | W 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 131 | 154 | 141 | 135 | 132 | 129 | 84 | 80 | 63 | 61 | 96 | 62 | 42 | 40 | 24 | 15 | 13 | 8 | 5 | 5 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-off | cross-on | on | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:25PM1.45m | 4:54AM1.42m | 5:23PM1.67m | 5:45AM1.53m | 6:11PM1.87m | ||||||||||||||||
Low Tide | 10:14AM0.50m | 11:03PM0.42m | 11:16AM0.35m | 00:03AM0.26m | 12:04PM0.20m | ||||||||||||||||
 | |  |  |  | | |  | | | | |  |  | | | | | | | | |
 | 5:48 | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | — | — | — | 9:15 | — | — | — | — | — | — | — | 9:13 | — | — | — | — | — | — | — | 9:10 | — |
mm | 2 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 14 | 15 | 13 | 12 | 12 | 12 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 15 | 19 | 20 | 20 | 19 |
Feels °C | 12 | 12 | 10 | 11 | 10 | 9 | 10 | 10 | 12 | 12 | 12 | 13 | 11 | 11 | 10 | 10 | 12 | 16 | 17 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NNW 10 | NNW 9 | NNW 9 | N 9 | NNW 8 | NNW 9 | NNW 8 | NNW 8 | NNW 7 | WNW 7 | NW 7 |
| kJ | 131 | 154 | 141 | 135 | 132 | 129 | 84 | 80 | 63 | 61 | 96 | 62 | 42 | 40 | 24 | 15 | 13 | 6 | 5 | 5 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | N 12 | NNW 11 | N 10 | WNW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | WNW 7 | NW 7 | WNW 7 | N 8 | N 8 |
| kJ | — | — | — | — | — | — | — | 3 | 23 | 51 | 24 | 14 | 15 | 14 | 14 | 14 | 5 | 8 | 5 | 5 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 10 | W 10 | — | W 9 | — | — | W 13 | W 13 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | 2 | — | — | 3 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 3 | ESE 3 | ESE 4 | ESE 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 5 | 3 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 0 | 27 | 9 | 9 | 1268 | 9 | 9 | 9 | 0 | 9 | 42 | 110 | 40 | 8 | 14 | 40 | 40 | 40 | 56 | 79 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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