Surf Forecasts:
How big are the waves at Castlerock today (01 Aug):
- Morning surf: Morning surf (01 Aug, local time) - 3ft (0.9m), 7s period with NW swell.
- Afternoon surf: Afternoon surf (01 Aug, local time) - 3ft (0.9m), 7s period with NW swell.
- Evening surf: Evening surf (01 Aug, local time) - 2.5ft (0.8m), 7s period with NW swell.
The current surf forecast for Castlerock at 9PM is: 0.8m 7s primary swell from a Northwest direction and 0.1m 9s secondary swell from a North direction (forecast issued at 12:00pm August 01). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Aug) | 3ft (0.9m) | 7s |
| Afternoon (01 Aug) | 3ft (0.9m) | 7s |
| Evening (01 Aug) | 2.5ft (0.8m) | 7s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 11mm), heaviest on Mon morning. Very mild (max 16°C on Sat afternoon, min 11°C on Sat night). Wind will be generally light. | |||||||||||||||||||||
Sat 1 | Sunday 2 | Monday 3 | |||||||||||||||||||
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 | NW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NNW 8 | NW 7 | NW 7 | NW 7 | NW 7 | NNW 9 | NNW 9 | NNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 63 | 67 | 77 | 77 | 55 | 45 | 63 | 78 | 78 | 78 | 65 | 48 | 46 | 37 | 19 | 19 | 16 | 16 | 16 | 16 | 15 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross | cross-off | cross-off | cross-off | glassy | cross-on | cross-on | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross-off |
High Tide | 8:18AM1.57m | 8:48PM1.86m | 8:51AM1.56m | 9:20PM1.82m | 9:26AM1.52m | 9:54PM1.75m | |||||||||||||||
Low Tide | 2:36PM0.10m | 3:18AM0.30m | 3:03PM0.14m | 3:47AM0.32m | 3:32PM0.20m | ||||||||||||||||
 |  | | |  | | | |  | | | | |  | |  | | | | | | |
 | 5:33 | — | — | — | — | — | 5:35 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — |
 | — | — | — | 9:30 | — | — | — | — | — | — | — | 9:29 | — | — | — | — | — | — | — | 9:27 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 3 | 2 | — | — | 1 |
Temp °C | 15 | 15 | 16 | 15 | 13 | 12 | 11 | 11 | 13 | 15 | 16 | 16 | 15 | 14 | 12 | 12 | 12 | 13 | 13 | 14 | 15 |
Feels °C | 10 | 10 | 11 | 11 | 11 | 10 | 10 | 10 | 12 | 13 | 14 | 14 | 13 | 12 | 10 | 10 | 9 | 10 | 9 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | N 7 | — | — | — | NW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NNW 8 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NNW 9 | NNW 9 |
| kJ | 1 | — | — | — | 55 | 45 | 63 | 78 | 78 | 78 | 65 | 48 | 46 | 37 | 19 | 19 | 16 | 11 | 7 | 16 | 15 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | N 9 | NNW 9 | NNW 9 | N 9 | N 9 | — | — | N 8 | N 8 | N 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NW 7 | NW 6 |
| kJ | — | — | — | — | 2 | 8 | 8 | 2 | 2 | — | — | 5 | 5 | 5 | 12 | 14 | 15 | 16 | 16 | 7 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | N 7 | — | — | — | — | — | — | — | — | — | — | W 10 | — | — | W 10 | W 9 | — |
| kJ | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 2 | 2 | — |
Wind waves Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 7 | — | — | — | — | — | — | — | — | ENE 2 | — | — | — | — | ENE 3 | ENE 3 | ENE 4 | ENE 4 |
| kJ | 63 | 67 | 77 | 77 | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | 4 | 5 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 391 | 409 | 409 | 393 | 27 | 8 | 0 | 0 | 0 | 2 | 8 | 8 | 8 | 16 | 40 | 40 | 40 | 40 | 97 | 97 | 40 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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