Surf Forecasts:
How big are the waves at Castlerock today (12 Aug):
- Morning surf: Morning surf (12 Aug, local time) - 0.5ft (0.2m), 11s period with W swell.
- Afternoon surf: Afternoon surf (12 Aug, local time) - 0.5ft (0.1m), 11s period with W swell.
- Evening surf: Evening surf (12 Aug, local time) - 0.5ft (0.1m), 10s period with W swell.
The current surf forecast for Castlerock at 10AM is: 0.1m 11s primary swell from a West direction and 0.1m 6s secondary swell from a Northwest direction (forecast issued at 06:00am August 12). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Aug) | 0.5ft (0.2m) | 11s |
| Afternoon (12 Aug) | 0.5ft (0.1m) | 11s |
| Evening (12 Aug) | 0.5ft (0.1m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Thu afternoon. Warm (max 23°C on Wed afternoon, min 13°C on Fri night). Wind will be generally light. | |||||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||||||||
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) | W 11 | W 11 | W 11 | W 11 | W 10 | W 10 | W 10 | W 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | W 10 | W 10 | W 9 | W 9 | NW 3 | NW 3 | NW 4 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 10 | 9 | 2 | 2 | 2 | 2 | 2 | 11 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 8 | 7 | 7 | 6 | 5 | 6 | 7 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | glassy | glassy | glassy | off | cross-off | glassy | glassy | cross-on | glassy | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 6:29AM1.60m | 6:54PM2.02m | 7:08AM1.65m | 7:34PM2.10m | 7:45AM1.66m | 8:12PM2.10m | |||||||||||||||||
Low Tide | 12:44PM0.06m | 1:33AM0.07m | 1:22PM-0.03m | 2:11AM0.06m | 1:58PM-0.07m | ||||||||||||||||||
 |  |  | | |  |  | | | | | | |  | | |  | | | | | |  | |
 | 5:54 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | — | 9:07 | — | — | — | — | — | — | — | 9:06 | — | — | — | — | — | — | — | 9:04 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 1 | — | — | — | — | — | — |
Temp °C | 17 | 16 | 19 | 22 | 23 | 23 | 22 | 20 | 19 | 19 | 21 | 22 | 23 | 21 | 18 | 17 | 16 | 14 | 15 | 16 | 16 | 15 | 14 |
Feels °C | 14 | 13 | 17 | 20 | 22 | 23 | 22 | 21 | 21 | 21 | 22 | 22 | 24 | 23 | 19 | 18 | 15 | 12 | 13 | 13 | 12 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | W 11 | W 11 | W 11 | W 11 | W 10 | W 10 | ESE 3 | E 4 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 | W 9 |
| kJ | 10 | 9 | 2 | 2 | 2 | 2 | 1 | 1 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 8 | 7 | 7 | 6 | 2 | 2 | 1 |
Swell 2 Height (m) Direction Period (s) | NW 7 | NW 6 | NW 6 | — | — | — | W 10 | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 2 | 2 | — | — | — | 2 | 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | N 7 | N 6 | N 7 | N 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SE 2 | SE 2 | SSE 2 | SSE 2 | — | — | — | — | — | — | — | — | — | — | — | NW 3 | NW 3 | NW 3 | NW 3 | NW 3 | NW 3 | NW 4 |
| kJ | — | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 2 | 5 | 6 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 40 | 40 | 56 | 56 | 40 | 42 | 40 | 40 | 40 | 40 | 40 | 42 | 42 | 40 | 40 | 42 | 83 | 157 | 398 | 144 | 772 | 398 | 434 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||||
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