Surf Forecasts:
How big are the waves at Castlerock today (25 Sep):
- Morning surf: Morning surf (25 Sep, local time) - 7ft (2.1m), 16s period with NW swell.
- Afternoon surf: Afternoon surf (25 Sep, local time) - 6ft (1.9m), 14s period with NW swell.
- Evening surf: Evening surf (25 Sep, local time) - 5ft (1.6m), 13s period with NW swell.
The current surf forecast for Castlerock at 2PM is: 1.9m 15s primary swell from a Northwest direction (forecast issued at 06:00am September 25). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Sep) | 7ft (2.1m) | 16s |
| Afternoon (25 Sep) | 6ft (1.9m) | 14s |
| Evening (25 Sep) | 5ft (1.6m) | 13s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Sun morning. Very mild (max 17°C on Sat afternoon, min 9°C on Sun night). Winds decreasing (fresh winds from the S on Sun morning, light winds from the SSW by Sun night). | |||||||||||||||||||||||
Friday 25 | Saturday 26 | Sunday 27 | |||||||||||||||||||||
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 16 | NW 16 | NW 16 | NW 15 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 12 | WNW 12 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 2386 | 2201 | 2119 | 1641 | 1407 | 1042 | 905 | 760 | 700 | 625 | 506 | 389 | 303 | 286 | 286 | 216 | 216 | 104 | 156 | 93 | 109 | 211 | 336 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:57AM1.55m | 6:16PM1.88m | 6:27AM1.66m | 6:46PM1.97m | 6:58AM1.73m | 7:17PM2.00m | |||||||||||||||||
Low Tide | 12:10PM0.13m | 00:47AM0.14m | 12:39PM0.06m | 1:14AM0.08m | 1:08PM0.02m | ||||||||||||||||||
 | |  | |  | |  | |  | | |  | | | | | | | |  | | | | |
 | — | 7:16 | — | — | — | — | — | — | — | 7:18 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — |
 | — | — | — | — | — | 7:19 | — | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:14 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 12 | 12 | 12 | 14 | 15 | 14 | 12 | 13 | 13 | 13 | 13 | 15 | 17 | 16 | 14 | 12 | 12 | 14 | 14 | 11 | 13 | 13 | 11 |
Feels °C | 8 | 8 | 8 | 9 | 10 | 9 | 6 | 7 | 7 | 8 | 7 | 10 | 12 | 11 | 10 | 7 | 6 | 8 | 7 | 7 | 9 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | NW 16 | NW 16 | NW 16 | NW 15 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 12 | WNW 12 |
| kJ | 2386 | 2201 | 2119 | 1641 | 1407 | 1042 | 905 | 760 | 700 | 625 | 506 | 389 | 303 | 286 | 286 | 216 | 216 | 104 | 156 | 93 | 109 | 211 | 336 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SE 4 | — | — | — | — | — | — | — | — | NW 10 | NNW 11 | NW 11 | NW 10 | NW 10 | NW 9 |
| kJ | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 84 | 78 | 57 | 50 | 24 | 13 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 4 | ESE 4 | SE 4 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 2 | S 3 | SSW 3 | SSW 3 | SSW 3 | SSW 3 | S 3 | S 2 | SSE 3 | SSE 3 | SSE 4 | SSE 4 | SW 3 | SW 2 | WSW 2 | — |
| kJ | — | — | — | — | — | — | — | 1 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 1 | 3 | 11 | 16 | 3 | 1 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 9 | 9 | 9 | 9 | 9 | 9 | 14 | 387 | 187 | 9 | 387 | 444 | 430 | 14 | 0 | 0 | 404 | 428 | 172 | 9 | 9 | 9 | 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