Surf Forecasts:
How big are the waves at Castlerock today (13 Aug):
- Morning surf: Morning surf (13 Aug, local time) - 0.5ft (0.2m), 11s period with WNW swell.
- Afternoon surf: Afternoon surf (13 Aug, local time) - 0.5ft (0.2m), 10s period with WNW swell.
- Evening surf: Evening surf (13 Aug, local time) - 0.5ft (0.2m), 10s period with WNW swell.
The current surf forecast for Castlerock at 5AM is: 0.2m 11s primary swell from a West-northwest direction (forecast issued at 12:00am August 13). The wind direction is predicted to be glassy.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Aug) | 0.5ft (0.2m) | 11s |
| Afternoon (13 Aug) | 0.5ft (0.2m) | 10s |
| Evening (13 Aug) | 0.5ft (0.2m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Thu afternoon. Warm (max 23°C on Thu morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||||||||||
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) | W 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | W 10 | W 10 | W 9 | NW 3 | NW 3 | NW 4 | NW 5 | NW 5 | NW 5 | NW 6 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 11 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 8 | 7 | 7 | 4 | 5 | 5 | 7 | 9 | 17 | 20 | 88 | 82 | 109 | 93 | 93 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | off | off | cross-off | glassy | glassy | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:08AM1.65m | 7:34PM2.10m | 7:45AM1.66m | 8:12PM2.10m | 8:20AM1.64m | 8:48PM2.02m | ||||||||||||||||||
Low Tide | 1:33AM0.07m | 1:22PM-0.03m | 2:11AM0.06m | 1:58PM-0.07m | 2:47AM0.09m | 2:34PM-0.04m | ||||||||||||||||||
 | |  | |  | | | |  | |  | |  | | | |  | | | | | | |  | |
 | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:06 | — | — | — | — | — | — | — | 9:04 | — | — | — | — | — | — | — | 9:01 | — |
mm | — | — | — | — | 1 | 2 | 3 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 19 | 21 | 23 | 22 | 20 | 19 | 17 | 16 | 14 | 15 | 16 | 16 | 16 | 15 | 13 | 12 | 12 | 13 | 15 | 15 | 14 | 13 |
Feels °C | 21 | 21 | 20 | 21 | 23 | 23 | 22 | 21 | 18 | 15 | 12 | 13 | 13 | 12 | 13 | 13 | 10 | 9 | 9 | 9 | 11 | 11 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | W 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | WNW 9 | NW 6 | — | — | — | NW 8 | NW 8 |
| kJ | 11 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 8 | 7 | 7 | 2 | 2 | 2 | 1 | 2 | 8 | 20 | — | — | — | 93 | 93 |
Swell 2 Height (m) Direction Period (s) | E 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 9 | — | — | — | — | — |
| kJ | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 16 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NW 3 | NW 4 | NW 4 | NW 3 | NW 3 | NW 4 | NW 5 | NW 5 | NW 5 | — | NW 9 | NW 8 | NW 8 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 2 | 3 | 3 | 4 | 5 | 5 | 7 | 9 | 17 | — | 88 | 82 | 109 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 40 | 40 | 40 | 40 | 42 | 42 | 40 | 40 | 42 | 187 | 157 | 398 | 398 | 528 | 434 | 131 | 300 | 187 | 187 | 187 | 833 | 862 | 863 | 9 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Castlerock surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest