Surf Forecasts:
How big are the waves at Castlerock today (17 Jun):
- Afternoon surf: Afternoon surf (17 Jun, local time) - 1ft (0.3m), 10s period with WNW swell.
- Evening surf: Evening surf (17 Jun, local time) - 1.5ft (0.4m), 10s period with WNW swell.
The current surf forecast for Castlerock at 9PM is: 0.4m 10s primary swell from a West-northwest direction (forecast issued at 06:00pm June 17). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Jun) | - | - |
| Afternoon (17 Jun) | 1ft (0.3m) | 10s |
| Evening (17 Jun) | 1.5ft (0.4m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 39mm), heaviest during Fri morning. Very mild (max 18°C on Wed afternoon, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | WNW 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 20 | 32 | 33 | 57 | 56 | 38 | 33 | 38 | 38 | 38 | 36 | 32 | 30 | 28 | 20 | 18 | 17 | 15 | 15 | 14 | 14 | 13 | 12 | 18 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | cross-off | off | cross-off | cross-on | cross-on | cross-on | cross-on | glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 8:46PM1.94m | 9:03AM1.50m | 9:36PM1.90m | 9:49AM1.38m | 10:29PM1.81m | 10:39AM1.27m | ||||||||||||||||||
Low Tide | 2:33PM0.12m | 3:30AM0.18m | 3:18PM0.14m | 4:25AM0.28m | 4:05PM0.19m | 5:20AM0.38m | ||||||||||||||||||
 | |  |  |  |  |  |  | | | |  | |  | | | | | |  | | | | | |
 | — | — | — | — | 4:46 | — | — | — | — | — | — | — | 4:46 | — | — | — | — | — | — | — | 4:46 | — | — | — |
 | — | — | 10:08 | — | — | — | — | — | — | — | 10:09 | — | — | — | — | — | — | — | 10:09 | — | — | — | — | 10:09 |
mm | — | — | — | — | — | 1 | 1 | — | 1 | — | 3 | 3 | 5 | 7 | 8 | 4 | 3 | — | 1 | 1 | 1 | — | — | — |
Temp °C | 18 | 18 | 15 | 13 | 11 | 12 | 13 | 14 | 15 | 16 | 15 | 16 | 15 | 13 | 12 | 12 | 12 | 13 | 13 | 12 | 11 | 11 | 14 | 16 |
Feels °C | 14 | 15 | 12 | 11 | 8 | 9 | 10 | 12 | 14 | 16 | 15 | 15 | 15 | 11 | 11 | 11 | 11 | 13 | 13 | 10 | 8 | 8 | 10 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | ESE 3 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | WNW 7 |
| kJ | 20 | 32 | 33 | 57 | 56 | 38 | 33 | 38 | 38 | 38 | 36 | 32 | 30 | 1 | 20 | 18 | 17 | 15 | 15 | 14 | 14 | 13 | 12 | 18 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | ESE 3 | — | — | — | SE 3 | NW 3 | ESE 6 | E 4 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 2 | 2 | 3 | 1 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 3 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SSE 2 | SE 3 | ESE 3 | — | — | — | ESE 3 | WNW 8 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | 1 | 28 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 42 | 42 | 42 | 8 | 8 | 14 | 14 | 14 | 14 | 14 | 14 | 42 | 40 | 144 | 16 | 40 | 40 | 40 | 40 | 42 | 42 | 162 | 298 | 398 |
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