Surf Forecasts:
How big are the waves at Castlerock today (11 Jun):
- Morning surf: Morning surf (11 Jun, local time) - 3ft (0.9m), 9s period with NW swell.
- Afternoon surf: Afternoon surf (11 Jun, local time) - 2.5ft (0.8m), 9s period with WNW swell.
- Evening surf: Evening surf (11 Jun, local time) - 2.5ft (0.8m), 8s period with WNW swell.
The current surf forecast for Castlerock at 8AM is: 0.9m 9s primary swell from a Northwest direction (forecast issued at 12:00am June 11). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Jun) | 3ft (0.9m) | 9s |
| Afternoon (11 Jun) | 2.5ft (0.8m) | 9s |
| Evening (11 Jun) | 2.5ft (0.8m) | 8s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 12mm), heaviest on Wed night. Very mild (max 15°C on Fri morning, min 9°C on Wed night). Winds increasing (light winds from the WSW on Wed night, fresh winds from the W by Fri afternoon). | ||||||||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
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) | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 9 | WNW 7 | WNW 8 | WNW 10 | WNW 12 | WNW 12 | WNW 12 | NW 12 | WNW 12 | WNW 11 | WNW 11 | NW 11 | NW 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 120 | 138 | 120 | 99 | 81 | 94 | 90 | 128 | 105 | 84 | 32 | 31 | 76 | 159 | 305 | 636 | 1135 | 1158 | 1029 | 939 | 645 | 713 | 415 | 281 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross |
High Tide | 3:11AM1.56m | 3:51PM1.35m | 4:10AM1.64m | 4:44PM1.49m | 5:04AM1.70m | 5:33PM1.64m | ||||||||||||||||||
Low Tide | 9:49AM0.38m | 9:46PM0.43m | 10:42AM0.30m | 10:50PM0.33m | 11:31AM0.22m | |||||||||||||||||||
 |  |  | | | |  |  |  | | | | | | |  | |  | | | | | | | |
 | — | 4:47 | — | — | — | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:47 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 10:05 | — | — | — | — | — | — | — | 10:06 | — | — | — | — | — | — | — | 10:07 |
mm | — | 1 | 5 | 4 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 9 | 9 | 9 | 10 | 13 | 14 | 14 | 13 | 11 | 11 | 12 | 14 | 15 | 14 | 13 | 12 | 12 | 11 | 12 | 13 | 14 | 13 | 12 | 11 |
Feels °C | 6 | 5 | 4 | 6 | 10 | 12 | 10 | 8 | 7 | 7 | 8 | 9 | 9 | 7 | 6 | 6 | 5 | 4 | 5 | 6 | 7 | 6 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | WNW 9 | WNW 8 | — | WNW 8 | WNW 8 | NW 6 | NW 6 | WNW 9 | WNW 13 | NW 12 | WNW 12 | WNW 12 | WNW 12 | NW 12 | — | — | NW 11 | NW 11 | NW 10 |
| kJ | 120 | 138 | 120 | 99 | 81 | 94 | 90 | — | 105 | 84 | 32 | 31 | 17 | 64 | 149 | 636 | 1135 | 1158 | 1029 | — | — | 476 | 415 | 281 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | WNW 9 | WNW 9 | WNW 13 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 29 | 26 | 18 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NW 12 | W 12 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 6 | 3 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 3 | SSE 3 | WNW 3 | W 3 | WNW 8 | — | SW 2 | WSW 2 | WSW 3 | WNW 7 | WNW 8 | WNW 10 | W 4 | — | — | — | WNW 12 | WNW 11 | WNW 11 | — | — |
| kJ | — | — | — | 2 | 2 | 3 | 5 | 128 | — | 1 | 1 | 2 | 76 | 159 | 305 | 22 | — | — | — | 939 | 645 | 713 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 2 | 0 | 0 | 9 | 336 | 387 | 347 | 187 | 9 | 9 | 803 | 772 | 378 | 772 | 387 | 387 | 300 | 300 | 300 | 251 | 251 | 187 | 251 |
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