Surf Forecasts:
How big are the waves at Castlerock today (27 Oct):
- Morning surf: Morning surf (27 Oct, local time) - 7.5ft (2.3m), 14s period with WNW swell.
- Afternoon surf: Afternoon surf (27 Oct, local time) - 8ft (2.5m), 14s period with WNW swell.
- Evening surf: Evening surf (27 Oct, local time) - 10ft (3.0m), 13s period with NW swell.
The current surf forecast for Castlerock at 2AM is: 0.8m 12s primary swell from a West-northwest direction and 0.2m 8s secondary swell from a North-northwest direction (forecast issued at 05:00pm October 26). An open ocean swell of 0.6m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Oct) | 7.5ft (2.3m) | 14s |
| Afternoon (27 Oct) | 8ft (2.5m) | 14s |
| Evening (27 Oct) | 10ft (3.0m) | 13s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 19mm), heaviest on Mon night. Very mild (max 16°C on Mon afternoon, min 9°C on Mon night). Winds decreasing (strong winds from the SW on Mon night, light winds from the S by Wed afternoon). | |||||||||||||||||||
Mon 26 | Tuesday 27 | Wednesday 28 | |||||||||||||||||
3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | NNW 10 | NW 10 | WNW 11 | NW 12 | WNW 12 | WNW 12 | WNW 14 | WNW 14 | WNW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 154 | 110 | 101 | 144 | 222 | 426 | 2060 | 2727 | 2816 | 2323 | 2692 | 2456 | 1863 | 1565 | 1313 | 930 | 756 | 683 | 564 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-off | 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 |
High Tide | 5:50PM1.95m | 6:10AM1.82m | 6:28PM1.90m | 6:48AM1.84m | 7:08PM1.79m | ||||||||||||||
Low Tide | 00:11AM0.05m | 12:21PM0.06m | 00:44AM0.08m | 1:02PM0.09m | |||||||||||||||
 |  | | |  |  | |  | | | | | | |  |  | |  | | |
 | — | — | — | — | — | 7:18 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — |
 | 5:02 | — | — | — | — | — | — | — | 5:00 | — | — | — | — | — | — | — | 4:59 | — | — |
mm | 2 | 1 | 1 | 5 | — | — | 1 | — | 1 | 1 | 1 | — | 4 | 2 | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 14 | 10 | 9 | 9 | 10 | 10 | 9 | 9 | 10 | 12 | 12 | 12 | 14 | 14 | 13 | 13 |
Feels °C | 12 | 12 | 10 | 7 | 0 | -1 | -1 | 1 | 2 | 2 | 2 | 2 | 6 | 6 | 6 | 9 | 11 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NW 10 | WNW 11 | NW 12 | WNW 12 | WNW 12 | WNW 14 | WNW 14 | WNW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 |
| kJ | 154 | 110 | 101 | 144 | 222 | 426 | 2060 | 2727 | 2816 | 2323 | 2692 | 2456 | 1863 | 1565 | 1313 | 930 | 756 | 683 | 564 |
Swell 2 Height (m) Direction Period (s) | NW 11 | NNW 9 | NNW 9 | ESE 4 | NNW 8 | NNW 8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 121 | 69 | 47 | 7 | 7 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | E 4 | ESE 4 | NNW 9 | ESE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 8 | 6 | 16 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 6 | SSE 3 | S 3 | SSW 3 | S 4 | SSW 4 | WSW 4 | W 4 | SSW 3 | WSW 4 | — | SW 3 | SSW 3 | — | SW 3 | SW 3 | SW 3 | — | — |
| kJ | 44 | 3 | 2 | 3 | 12 | 25 | 36 | 44 | 2 | 16 | — | 5 | 6 | — | 9 | 6 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 390 | 270 | 390 | 390 | 415 | 1092 | 794 | 1115 | 1263 | 862 | 559 | 559 | 419 | 387 | 366 | 9 | 9 | 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