Surf Forecasts:
How big are the waves at Castlerock today (24 Aug):
- Morning surf: Morning surf (24 Aug, local time) - 3.5ft (1.0m), 11s period with NW swell.
- Afternoon surf: Afternoon surf (24 Aug, local time) - 3ft (0.9m), 11s period with NW swell.
- Evening surf: Evening surf (24 Aug, local time) - 2.5ft (0.7m), 11s period with NW swell.
The current surf forecast for Castlerock at 3PM is: 0.9m 11s primary swell from a Northwest direction (forecast issued at 06:00am August 24). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Aug) | 3.5ft (1.0m) | 11s |
| Afternoon (24 Aug) | 3ft (0.9m) | 11s |
| Evening (24 Aug) | 2.5ft (0.7m) | 11s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Tue night. Warm (max 20°C on Mon afternoon, min 13°C on Mon morning). Wind will be generally light. | |||||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||||||||
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 11 | NW 12 | NW 11 | NW 11 | NW 11 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | W 9 | W 9 | W 9 | E 4 | E 4 | E 4 | ENE 4 | ENE 4 | NW 11 | WNW 10 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 198 | 303 | 268 | 194 | 163 | 141 | 99 | 76 | 63 | 40 | 32 | 18 | 16 | 6 | 6 | 3 | 10 | 16 | 24 | 27 | 15 | 5 | 10 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross | cross-off | cross | cross |
High Tide | 4:59AM1.20m | 5:25PM1.44m | 5:30AM1.32m | 5:55PM1.59m | 5:58AM1.43m | 6:23PM1.72m | |||||||||||||||||
Low Tide | 11:10AM0.50m | 11:53PM0.49m | 11:46AM0.35m | 00:25AM0.38m | 12:17PM0.22m | ||||||||||||||||||
 |  | | | | | |  |  |  | | | | | | | |  |  | | | | | |
 | 6:16 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — |
 | — | — | — | — | — | 8:40 | — | — | — | — | — | — | — | 8:37 | — | — | — | — | — | — | — | 8:36 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 13 | 12 | 13 | 17 | 20 | 18 | 16 | 15 | 13 | 13 | 14 | 16 | 17 | 17 | 15 | 15 | 14 | 13 | 14 | 15 | 17 | 18 | 17 |
Feels °C | 11 | 10 | 11 | 15 | 18 | 15 | 14 | 13 | 10 | 10 | 10 | 12 | 13 | 15 | 13 | 11 | 10 | 9 | 10 | 11 | 15 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 12 | NW 11 | NW 11 | NW 11 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | ENE 3 | W 9 | NW 8 | WNW 8 | NW 8 | NW 8 | NW 8 | NW 7 | ENE 4 | ENE 4 |
| kJ | 198 | 303 | 268 | 194 | 163 | 141 | 99 | 76 | 63 | 40 | 32 | 18 | 16 | 1 | 6 | 3 | 6 | 2 | 2 | 2 | 2 | 10 | 6 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 9 | NW 8 | W 9 | W 9 | W 9 | W 9 | W 9 | — | NW 7 | WNW 10 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 3 | 2 | 2 | 2 | 2 | 2 | — | 2 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 8 | — | — | — | — | — | — | — | NW 11 | NW 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | 5 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ESE 3 | ESE 3 | ESE 4 | ESE 4 | — | ESE 3 | ESE 3 | E 4 | E 4 | ESE 3 | E 3 | E 3 | E 4 | E 4 | E 4 | ENE 4 | ENE 4 | — | — |
| kJ | — | — | — | — | 2 | 4 | 3 | 2 | — | 1 | 3 | 6 | 7 | 2 | 1 | 1 | 10 | 16 | 24 | 27 | 15 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 2 | 16 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 97 | 97 | 251 | 251 | 40 | 40 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||||
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