Surf Forecasts:
How big are the waves at Castlerock today (01 Sep):
- Morning surf: Morning surf (01 Sep, local time) - 1.5ft (0.5m), 8s period with WNW swell.
- Afternoon surf: Afternoon surf (01 Sep, local time) - 2.5ft (0.8m), 9s period with WNW swell.
- Evening surf: Evening surf (01 Sep, local time) - 2.5ft (0.7m), 8s period with NW swell.
The current surf forecast for Castlerock at 3PM is: 0.8m 9s primary swell from a West-northwest direction and 0.1m 6s secondary swell from a North direction, 0.6m 4s secondary swell from a West direction (forecast issued at 06:00am September 01). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Sep) | 1.5ft (0.5m) | 8s |
| Afternoon (01 Sep) | 2.5ft (0.8m) | 9s |
| Evening (01 Sep) | 2.5ft (0.7m) | 8s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 14mm), heaviest on Tue afternoon. Very mild (max 18°C on Tue morning, min 12°C on Thu night). Winds increasing (calm on Tue night, fresh winds from the WSW by Thu night). | |||||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||||||||
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) | WNW 6 | WNW 7 | WNW 8 | WNW 9 | WNW 9 | WNW 8 | NW 8 | NW 8 | NW 8 | NW 8 | WNW 8 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | WNW 11 | WNW 11 | WNW 10 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 15 | 16 | 37 | 86 | 84 | 88 | 67 | 51 | 58 | 31 | 24 | 31 | 61 | 37 | 37 | 23 | 21 | 20 | 18 | 18 | 44 | 101 | 160 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | glassy | off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:01AM1.64m | 9:24PM1.77m | 9:39AM1.55m | 10:03PM1.61m | 10:22AM1.44m | ||||||||||||||||||
Low Tide | 3:10AM0.21m | 3:05PM0.16m | 3:40AM0.30m | 3:42PM0.28m | 4:16AM0.41m | 4:29PM0.43m | |||||||||||||||||
 |  | | |  |  |  | | | | | | |  | | |  | | | | | | | |
 | 6:31 | — | — | — | — | — | — | — | 6:33 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — |
 | — | — | — | — | — | 8:21 | — | — | — | — | — | — | — | 8:17 | — | — | — | — | — | — | — | 8:15 | — |
mm | — | — | — | — | 3 | 2 | 2 | — | — | — | — | 1 | 1 | — | — | — | — | — | 2 | — | — | 2 | 1 |
Temp °C | 13 | 15 | 15 | 18 | 16 | 15 | 14 | 13 | 13 | 13 | 15 | 15 | 15 | 18 | 17 | 17 | 16 | 15 | 16 | 18 | 17 | 14 | 13 |
Feels °C | 10 | 11 | 10 | 13 | 12 | 14 | 13 | 14 | 12 | 12 | 13 | 13 | 13 | 17 | 15 | 15 | 14 | 14 | 14 | 15 | 12 | 10 | 9 |
Swell 1 Height (m) Direction Period (s) | WNW 6 | WNW 7 | WNW 8 | WNW 9 | WNW 9 | WNW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NNW 7 | NW 6 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | WNW 11 | WNW 11 | WNW 10 |
| kJ | 14 | 16 | 37 | 86 | 84 | 88 | 67 | 51 | 58 | 31 | 17 | 10 | 61 | 37 | 37 | 23 | 21 | 20 | 18 | 18 | 44 | 101 | 160 |
Swell 2 Height (m) Direction Period (s) | NNW 6 | NNW 6 | NNW 6 | N 6 | — | — | — | — | — | NNW 7 | WNW 8 | NNW 9 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | N 9 | N 9 | N 9 |
| kJ | 15 | 7 | 4 | 1 | — | — | — | — | — | 17 | 24 | 31 | 11 | 11 | 11 | 10 | 15 | 16 | 17 | 8 | 6 | 6 | 2 |
Swell 3 Height (m) Direction Period (s) | W 9 | W 9 | — | — | — | — | — | — | — | — | NNW 9 | NW 8 | — | ESE 4 | — | — | — | — | — | — | — | — | — |
| kJ | 6 | 1 | — | — | — | — | — | — | — | — | 8 | 16 | — | 2 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 2 | SW 3 | WSW 3 | W 3 | W 4 | — | — | — | — | — | — | — | ESE 2 | — | — | WSW 3 | WSW 3 | — | — | W 2 | W 3 | W 3 | SW 3 |
| kJ | 1 | 3 | 3 | 8 | 9 | — | — | — | — | — | — | — | 1 | — | — | 1 | 1 | — | — | 2 | 3 | 5 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 187 | 187 | 187 | 409 | 187 | 9 | 9 | 8 | 8 | 14 | 16 | 8 | 0 | 14 | 27 | 52 | 52 | 42 | 341 | 378 | 387 | 9 | 9 |
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