Surf Forecasts:
How big are the waves at Castlerock today (21 Jun):
- Morning surf: Morning surf (21 Jun, local time) - 2ft (0.6m), 7s period with NW swell.
- Afternoon surf: Afternoon surf (21 Jun, local time) - 2ft (0.6m), 7s period with NW swell.
- Evening surf: Evening surf (21 Jun, local time) - 2ft (0.6m), 7s period with NW swell.
The current surf forecast for Castlerock at 8PM is: 0.6m 7s primary swell from a Northwest direction (forecast issued at 12:00pm June 21). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jun) | 2ft (0.6m) | 7s |
| Afternoon (21 Jun) | 2ft (0.6m) | 7s |
| Evening (21 Jun) | 2ft (0.6m) | 7s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 19°C on Mon afternoon, min 13°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||||||
Sun 21 | Monday 22 | Tuesday 23 | Wed 24 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | |
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||||
Wave Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 6 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | W 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 30 | 30 | 31 | 33 | 35 | 36 | 35 | 27 | 18 | 17 | 17 | 17 | 17 | 12 | 7 | 7 | 7 | 6 | 4 | 4 | 4 | 4 | 3 | 1 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | glassy | off | glassy | off | cross-off | cross-off | cross-off | off | off | glassy | glassy | on | on | on | on | on | glassy | glassy |
High Tide | 11:36AM1.18m | 00:28AM1.57m | 12:47PM1.13m | 1:37AM1.46m | 2:09PM1.14m | 2:45AM1.39m | ||||||||||||||||||
Low Tide | 5:50PM0.37m | 7:15AM0.53m | 6:52PM0.47m | 8:15AM0.56m | 8:02PM0.54m | |||||||||||||||||||
 | |  | | |  | |  | | | | | |  | | | | | | | | | | | |
 | 4:46 | — | — | — | — | — | 4:46 | — | — | — | — | — | — | — | 4:46 | — | — | — | — | — | — | — | 4:47 | — |
 | — | — | — | — | 10:10 | — | — | — | — | — | — | — | 10:10 | — | — | — | — | — | — | — | 10:10 | — | — | 10:10 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 15 | 16 | 16 | 15 | 15 | 15 | 15 | 16 | 19 | 19 | 19 | 18 | 18 | 17 | 19 | 18 | 19 | 15 | 13 | 13 | 13 | 14 |
Feels °C | 12 | 12 | 12 | 13 | 14 | 13 | 13 | 13 | 14 | 16 | 20 | 20 | 19 | 18 | 18 | 18 | 21 | 17 | 19 | 14 | 12 | 13 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 6 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | NW 6 |
| kJ | 30 | 30 | 31 | 33 | 35 | 36 | 35 | 27 | 18 | 17 | 17 | 17 | 17 | 12 | 7 | 7 | 7 | 6 | 4 | 4 | 4 | 4 | 3 | 1 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | N 9 | N 9 | N 9 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | N 9 | — | — | W 10 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 9 | W 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 40 | 40 | 40 | 40 | 16 | 16 | 16 | 40 | 40 | 40 | 40 | 40 | 40 | 41 | 83 | 56 | 83 | 576 | 831 | 444 | 430 | 570 | 340 | 336 |
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