Surf Forecasts:
How big are the waves at Castlerock today (16 Aug):
- Morning surf: Morning surf (16 Aug, local time) - 2.5ft (0.7m), 8s period with NW swell.
- Afternoon surf: Afternoon surf (16 Aug, local time) - 2ft (0.6m), 8s period with NW swell.
- Evening surf: Evening surf (16 Aug, local time) - 1.5ft (0.4m), 7s period with NW swell.
The current surf forecast for Castlerock at 1PM is: 0.6m 8s primary swell from a Northwest direction (forecast issued at 06:00am August 16). The wind direction is predicted to be offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Aug) | 2.5ft (0.7m) | 8s |
| Afternoon (16 Aug) | 2ft (0.6m) | 8s |
| Evening (16 Aug) | 1.5ft (0.4m) | 7s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 13mm), heaviest on Mon afternoon. Very mild (max 17°C on Tue morning, min 12°C on Sun morning). Wind will be generally light. | |||||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||||||||
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 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | WNW 10 | WNW 10 | WNW 9 | NW 7 | NW 7 | NW 6 | WNW 6 | WNW 6 | W 8 | WNW 7 | WNW 6 | WNW 8 | NW 8 | WNW 9 | WNW 10 | WNW 10 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 64 | 63 | 58 | 35 | 34 | 27 | 19 | 18 | 18 | 17 | 8 | 7 | 6 | 4 | 3 | 29 | 21 | 12 | 56 | 74 | 133 | 204 | 288 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | off | off | glassy | cross-off | cross-off | off | off | off | cross-off | cross | cross | cross | cross | cross | cross-off | cross | cross-off |
High Tide | 8:54AM1.59m | 9:23PM1.87m | 9:28AM1.53m | 9:56PM1.68m | 10:01AM1.44m | ||||||||||||||||||
Low Tide | 3:21AM0.17m | 3:09PM0.05m | 3:52AM0.28m | 3:45PM0.18m | 4:23AM0.40m | 4:23PM0.35m | |||||||||||||||||
 |  | |  | | | |  | | | | | |  | | | | | | | | |  | |
 | 6:01 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | — | 8:59 | — | — | — | — | — | — | — | 8:57 | — | — | — | — | — | — | — | 8:54 | — |
mm | 1 | 2 | 1 | — | — | 1 | 1 | — | — | — | — | 1 | 2 | 6 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 16 | 15 | 15 | 14 | 16 | 15 | 14 | 14 | 15 | 17 | 16 | 15 | 13 |
Feels °C | 11 | 10 | 10 | 11 | 11 | 12 | 12 | 14 | 14 | 15 | 16 | 15 | 14 | 12 | 14 | 11 | 10 | 10 | 11 | 12 | 12 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 6 | WNW 6 | WNW 6 | NW 6 | WNW 7 | WNW 6 | — | NW 8 | WNW 10 | WNW 10 | WNW 10 |
| kJ | 64 | 63 | 58 | 35 | 34 | 27 | 19 | 13 | 7 | 7 | 7 | 7 | 6 | 4 | 3 | 1 | 21 | 12 | — | 74 | 38 | 204 | 288 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | N 8 | N 8 | WNW 9 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | W 9 | W 8 | W 8 | W 8 | N 7 | N 7 | — | — | — | — | — | — |
| kJ | — | — | — | — | 1 | 1 | 8 | 18 | 18 | 17 | 8 | 6 | 6 | 1 | 1 | 1 | 1 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | N 8 | N 8 | N 8 | N 8 | N 7 | N 7 | N 7 | N 7 | N 7 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 5 | 5 | 5 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 8 | WNW 3 | WNW 3 | WNW 8 | W 3 | WNW 9 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 29 | 3 | 3 | 56 | 1 | 133 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 0 | 0 | 8 | 16 | 40 | 40 | 40 | 40 | 14 | 42 | 42 | 42 | 40 | 40 | 336 | 350 | 339 | 336 | 187 | 187 | 1263 | 398 | 394 |
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