Surf Forecasts:
How big are the waves at Castlerock today (28 Aug):
- Morning surf: Morning surf (28 Aug, local time) - 0.5ft (0.2m), 8s period with WNW swell.
- Afternoon surf: Afternoon surf (28 Aug, local time) - 1.5ft (0.5m), 4s period with NW swell.
- Evening surf: Evening surf (28 Aug, local time) - 2ft (0.6m), 5s period with NNW swell.
The current surf forecast for Castlerock at 6AM is: 0.2m 8s primary swell from a West-northwest direction and 0.3m 4s secondary swell from a North-northwest direction (forecast issued at 12:00am August 28). An open ocean swell of 0.2m 3s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Aug) | 0.5ft (0.2m) | 8s |
| Afternoon (28 Aug) | 1.5ft (0.5m) | 4s |
| Evening (28 Aug) | 2ft (0.6m) | 5s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Sun afternoon. Very mild (max 17°C on Thu night, min 12°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | ||||||||||||||||||||||
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 | 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 8 | WNW 8 | WNW 8 | WNW 8 | NW 4 | NW 4 | NNW 4 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 7 | NNW 7 | NNW 6 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 7 | 7 | 6 | 6 | 5 | 6 | 13 | 15 | 17 | 21 | 20 | 21 | 21 | 21 | 21 | 23 | 22 | 21 | 21 | 22 | 13 | 9 | 9 | 4 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | on | on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | glassy |
High Tide | 6:54AM1.61m | 7:18PM1.92m | 7:24AM1.66m | 7:47PM1.96m | 7:55AM1.69m | 8:18PM1.95m | ||||||||||||||||||
Low Tide | 1:22AM0.22m | 1:12PM0.06m | 1:49AM0.17m | 1:39PM0.03m | 2:16AM0.15m | 2:06PM0.03m | ||||||||||||||||||
 | |  | |  | | |  | | |  | | | | | | |  | | | |  | |  | |
 | — | 6:24 | — | — | — | — | — | — | — | 6:26 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:30 | — | — | — | — | — | — | — | 8:28 | — | — | — | — | — | — | — | 8:25 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 |
Temp °C | 16 | 15 | 16 | 16 | 17 | 16 | 16 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 12 | 14 | 16 | 17 | 16 | 14 |
Feels °C | 16 | 16 | 16 | 15 | 14 | 13 | 14 | 12 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 10 | 12 | 14 | 16 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | NNW 4 | NNW 4 | NNW 4 | NW 8 | NW 7 | NW 7 | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 7 | NNW 7 | NNW 6 |
| kJ | 7 | 3 | 3 | 3 | 2 | 2 | 2 | 15 | 17 | 21 | 20 | 21 | 21 | 21 | 21 | 23 | 22 | 21 | 21 | 22 | 13 | 9 | 9 | 4 |
Swell 2 Height (m) Direction Period (s) | N 4 | ENE 3 | ENE 3 | WNW 8 | — | NW 8 | NW 8 | W 7 | W 7 | — | — | — | — | — | — | NW 7 | — | W 9 | W 8 | W 8 | W 10 | W 10 | W 10 | W 9 |
| kJ | 1 | 1 | 1 | 6 | — | 2 | 2 | 1 | 1 | — | — | — | — | — | — | 2 | — | 2 | 1 | 1 | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | WNW 8 | WNW 8 | ENE 3 | NW 8 | — | — | — | — | — | — | — | — | — | — | — | W 9 | — | — | W 10 | — | — | — | W 12 |
| kJ | — | 7 | 6 | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 2 | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | ENE 3 | — | — | — | NW 4 | NW 4 | NNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ESE 3 | ESE 4 |
| kJ | 2 | — | — | — | 5 | 6 | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 254 | 303 | 303 | 284 | 282 | 273 | 282 | 270 | 282 | 282 | 79 | 40 | 97 | 97 | 42 | 42 | 42 | 42 | 40 | 40 | 40 | 40 | 40 | 40 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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