Surf Forecasts:
How big are the waves at Castlerock today (09 Sep):
- Morning surf: Morning surf (09 Sep, local time) - 5ft (1.6m), 9s period with NNW swell.
- Afternoon surf: Afternoon surf (09 Sep, local time) - 3.5ft (1.0m), 8s period with NNW swell.
- Evening surf: Evening surf (09 Sep, local time) - 2ft (0.6m), 8s period with NNW swell.
The current surf forecast for Castlerock at 3PM is: 1.0m 8s primary swell from a North-northwest direction and 0.6m 8s secondary swell from a West-northwest direction (forecast issued at 12:00pm September 09). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Sep) | 5ft (1.6m) | 9s |
| Afternoon (09 Sep) | 3.5ft (1.0m) | 8s |
| Evening (09 Sep) | 2ft (0.6m) | 8s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Fri night. Very mild (max 18°C on Thu afternoon, min 12°C on Wed night). Winds increasing (calm on Wed afternoon, fresh winds from the SSW by Fri night). | |||||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | |||||||||||||||||||
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) | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NW 8 | NW 7 | WNW 7 | WNW 8 | WNW 9 | WNW 9 | WNW 12 | WNW 8 | WNW 6 | WNW 6 | NW 6 | NW 8 | NW 8 | NW 9 | NW 12 | NW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 346 | 202 | 96 | 56 | 35 | 28 | 14 | 21 | 19 | 26 | 26 | 27 | 36 | 33 | 58 | 59 | 109 | 135 | 123 | 200 | 528 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | glassy | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | off | off | off |
High Tide | 5:58PM1.94m | 6:13AM1.60m | 6:36PM2.05m | 6:48AM1.67m | 7:11PM2.08m | ||||||||||||||||
Low Tide | 11:48AM0.16m | 00:37AM0.11m | 12:25PM0.03m | 1:11AM0.05m | 12:59PM-0.04m | ||||||||||||||||
 |  | | |  | | | | |  | |  |  |  | | | | | | | | |
 | 6:46 | — | — | — | — | — | 6:48 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — |
 | — | — | — | 8:00 | — | — | — | — | — | — | — | 7:58 | — | — | — | — | — | — | — | 7:54 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 15 | 15 | 14 | 14 | 12 | 12 | 12 | 14 | 15 | 18 | 16 | 14 | 14 | 12 | 14 | 14 | 15 | 16 | 16 | 15 |
Feels °C | 10 | 12 | 13 | 13 | 11 | 8 | 8 | 7 | 9 | 11 | 15 | 12 | 10 | 9 | 8 | 10 | 10 | 12 | 14 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NW 8 | NW 7 | WNW 7 | WNW 8 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 12 | WNW 11 | NW 6 | NW 8 | NW 8 | NW 9 | NW 9 | NW 12 |
| kJ | 346 | 202 | 96 | 56 | 35 | 28 | 14 | 21 | 19 | 26 | 26 | 26 | 36 | 27 | 11 | 59 | 109 | 135 | 123 | 132 | 528 |
Swell 2 Height (m) Direction Period (s) | — | WNW 9 | WNW 8 | WNW 8 | WNW 8 | NNW 7 | WNW 8 | NNW 7 | NW 7 | SE 4 | WNW 11 | WNW 12 | WNW 12 | — | — | WNW 10 | W 10 | — | NW 12 | NW 12 | — |
| kJ | — | 68 | 46 | 45 | 12 | 18 | 11 | 5 | 2 | 3 | 12 | 27 | 27 | — | — | 10 | 8 | — | 68 | 200 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | NW 8 | — | NNW 7 | W 12 | N 7 | NW 7 | ESE 4 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 9 | — | 5 | 3 | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SSE 3 | SSE 3 | SSW 3 | SW 3 | WSW 3 | W 3 | WNW 6 | WNW 6 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 3 | 5 | 2 | 2 | 3 | 3 | 33 | 58 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 9 | 27 | 0 | 8 | 14 | 56 | 404 | 391 | 404 | 398 | 380 | 300 | 300 | 302 | 172 | 162 | 9 | 0 | 0 | 0 |
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