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) - 2.5ft (0.7m), 4s period with E swell.
- Evening surf: Evening surf (03 Aug, local time) - 3ft (0.9m), 4s period with ENE swell.
The current surf forecast for Castlerock at 2PM is: 0.3m 9s primary swell from a North-northwest direction and 0.3m 7s secondary swell from a Northwest direction, 0.6m 4s secondary swell from a East direction (forecast issued at 06:00am 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) | 2.5ft (0.7m) | 4s |
| Evening (03 Aug) | 3ft (0.9m) | 4s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 30mm), heaviest during Tue afternoon. Very mild (max 18°C on Tue afternoon, min 13°C on Mon morning). Winds increasing (light winds from the SSE on Tue afternoon, fresh winds from the NW by Wed afternoon). | |||||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||||||||
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 7 | NW 7 | NW 7 | NW 7 | E 4 | E 4 | ENE 5 | NNW 8 | N 8 | N 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 10 | NNW 10 | NW 10 | WNW 7 | NW 8 | NW 8 | NW 7 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 19 | 19 | 17 | 15 | 22 | 24 | 35 | 7 | 6 | 6 | 13 | 12 | 11 | 12 | 27 | 46 | 54 | 68 | 84 | 70 | 116 | 145 | 222 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross | cross-on | cross | cross-on | 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 | — | — | 2 | 3 | — | — | — | 1 | 4 | 3 | 1 | — | 3 | 7 | 2 | — | — | — | — | 1 | 1 | 1 | — |
Temp °C | 14 | 14 | 13 | 13 | 15 | 16 | 16 | 15 | 15 | 15 | 16 | 17 | 18 | 17 | 16 | 15 | 14 | 14 | 15 | 16 | 15 | 14 | 14 |
Feels °C | 13 | 13 | 11 | 10 | 12 | 15 | 14 | 11 | 11 | 12 | 15 | 17 | 18 | 17 | 15 | 14 | 11 | 11 | 13 | 13 | 10 | 8 | 9 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NNW 9 | ENE 5 | ENE 4 | N 8 | E 4 | E 4 | E 4 | NNW 8 | NNW 8 | NNW 9 | NNW 10 | NNW 10 | NW 10 | NNW 10 | NW 10 | — | — |
| kJ | 19 | 19 | 17 | 11 | 7 | 7 | 7 | 24 | 11 | 6 | 7 | 4 | 3 | 12 | 27 | 46 | 54 | 68 | 84 | 41 | 27 | — | — |
Swell 2 Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | WNW 7 | NNW 8 | N 8 | NW 6 | NNW 8 | NNW 8 | NNW 8 | E 4 | E 4 | E 4 | — | — | — | — | — | — | — |
| kJ | 12 | 14 | 15 | 15 | 15 | 8 | 4 | 7 | 6 | 2 | 13 | 12 | 11 | 3 | 3 | 1 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | W 10 | — | W 10 | W 10 | — | — | NW 6 | NW 6 | — | — | — | — | NW 7 | — | — | W 10 | — | — | — | — | — | — |
| kJ | — | 2 | — | 2 | 2 | — | — | 2 | 2 | — | — | — | — | 2 | — | — | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | E 3 | E 4 | E 4 | ENE 5 | — | SE 3 | E 4 | ESE 4 | — | — | — | — | — | — | — | — | WNW 7 | NW 8 | NW 8 | NW 7 |
| kJ | — | — | — | 5 | 22 | 24 | 35 | — | 2 | 11 | 8 | — | — | — | — | — | — | — | — | 70 | 116 | 145 | 222 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 40 | 40 | 40 | 107 | 40 | 40 | 40 | 40 | 56 | 56 | 40 | 40 | 40 | 54 | 40 | 27 | 27 | 9 | 9 | 359 | 1289 | 772 | 751 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||||
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