Surf Forecasts:
How big are the waves at Castlerock today (03 Sep):
- Morning surf: Morning surf (03 Sep, local time) - 1.5ft (0.5m), 7s period with NW swell.
- Afternoon surf: Afternoon surf (03 Sep, local time) - 1.5ft (0.5m), 6s period with NW swell.
- Evening surf: Evening surf (03 Sep, local time) - 2.5ft (0.8m), 9s period with WNW swell.
The current surf forecast for Castlerock at 5PM is: 0.6m 7s primary swell from a West-northwest direction and 0.2m 9s secondary swell from a North direction (forecast issued at 12:00pm September 03). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 Sep) | 1.5ft (0.5m) | 7s |
| Afternoon (03 Sep) | 1.5ft (0.5m) | 6s |
| Evening (03 Sep) | 2.5ft (0.8m) | 9s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Very mild (max 17°C on Thu morning, min 12°C on Fri night). Winds decreasing (strong winds from the W on Fri afternoon, light winds from the SSW by Sat afternoon). | |||||||||||||||||||||
Thu 3 | Friday 4 | Saturday 5 | |||||||||||||||||||
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 7 | NW 7 | NW 6 | WNW 7 | WNW 9 | WNW 11 | WNW 11 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 | NW 10 | NW 9 | NW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 23 | 22 | 19 | 35 | 96 | 180 | 242 | 763 | 1964 | 1547 | 1277 | 1366 | 1264 | 1111 | 897 | 617 | 487 | 348 | 268 | 212 | 156 |
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 | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | off | off | off |
High Tide | 10:22AM1.44m | 10:51PM1.42m | 11:21AM1.31m | 00:04AM1.23m | 1:05PM1.23m | ||||||||||||||||
Low Tide | 4:29PM0.43m | 5:07AM0.54m | 5:44PM0.59m | 6:33AM0.65m | 8:00PM0.66m | ||||||||||||||||
 | | | |  |  |  | |  | |  | |  | | | |  | | | | | |
 | 6:35 | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — |
 | — | — | — | 8:15 | — | — | — | — | — | — | — | 8:13 | — | — | — | — | — | — | — | 8:10 | — |
mm | — | — | — | — | — | 1 | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 17 | 16 | 15 | 15 | 14 | 13 | 14 | 14 | 15 | 15 | 14 | 13 | 13 | 13 | 12 | 13 | 15 | 17 | 16 | 14 |
Feels °C | 12 | 14 | 11 | 11 | 11 | 9 | 7 | 7 | 7 | 8 | 8 | 7 | 6 | 7 | 8 | 9 | 10 | 12 | 15 | 14 | 9 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 7 | NW 6 | WNW 7 | WNW 9 | WNW 11 | WNW 11 | WNW 12 | WNW 12 | — | — | — | — | — | NW 12 | NW 11 | NW 11 | NW 10 | NW 10 | NW 9 | NW 9 |
| kJ | 23 | 22 | 19 | 35 | 96 | 180 | 242 | 763 | 1964 | — | — | — | — | — | 897 | 617 | 487 | 348 | 268 | 212 | 156 |
Swell 2 Height (m) Direction Period (s) | NNW 9 | NNW 9 | N 9 | WNW 4 | N 9 | N 9 | N 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 17 | 8 | 6 | 1 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | N 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 2 | SW 2 | WSW 3 | SW 3 | SW 3 | SW 3 | SW 3 | SSW 3 | WNW 12 | WNW 12 | WNW 12 | NW 12 | NW 12 | NW 12 | — | — | WSW 2 | — | — | — | SSE 2 |
| kJ | 1 | 1 | 3 | 5 | 2 | 2 | 4 | 2 | 1640 | 1547 | 1277 | 1366 | 1264 | 1111 | — | — | 1 | — | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 42 | 341 | 387 | 387 | 9 | 253 | 300 | 380 | 555 | 780 | 771 | 380 | 380 | 380 | 162 | 9 | 9 | 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