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) - 2.5ft (0.7m), 5s period with NW swell.
The current surf forecast for Castlerock at 6PM is: 0.6m 4s primary swell from a Northwest direction and 0.1m 8s secondary swell from a West direction (forecast issued at 12:00pm August 28). The wind direction is predicted to be cross-onshore.
| 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) | 2.5ft (0.7m) | 5s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 6mm), mostly falling on Sun afternoon. Very mild (max 17°C on Fri morning, min 12°C on Sat night). Wind will be generally light. | |||||||||||||||||||||
Fri 28 | Saturday 29 | Sunday 30 | |||||||||||||||||||
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 | NNW 4 | NNW 3 | NW 4 | NW 5 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 7 | NNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 8 | 7 | 21 | 27 | 27 | 29 | 24 | 20 | 27 | 19 | 19 | 15 | 16 | 11 | 16 | 13 | 8 | 8 | 9 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | glassy | on | on | cross-on | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 7:18PM1.92m | 7:24AM1.66m | 7:47PM1.96m | 7:55AM1.69m | 8:18PM1.95m | ||||||||||||||||
Low Tide | 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 | 2 | 1 |
Temp °C | 16 | 17 | 16 | 16 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 12 | 14 | 17 | 17 | 16 | 14 |
Feels °C | 14 | 14 | 12 | 13 | 11 | 12 | 13 | 13 | 14 | 15 | 14 | 14 | 13 | 13 | 12 | 11 | 12 | 16 | 16 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | NNW 4 | NW 8 | NW 8 | W 8 | NW 5 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 7 | NNW 7 |
| kJ | 3 | 2 | 2 | 1 | 27 | 27 | 29 | 24 | 20 | 27 | 19 | 19 | 15 | 16 | 11 | 16 | 13 | 8 | 8 | 9 | 4 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | — | — | — | — | — | — | — | — | — | — | — | NW 7 | — | — | — | W 8 | W 11 | W 10 | E 3 | E 3 |
| kJ | 6 | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | 1 | 2 | 2 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | ENE 3 | NW 8 | — | — | — | — | — | — | — | — | — | — | — | W 9 | W 9 | W 8 | — | W 8 | W 6 | W 10 | W 9 |
| kJ | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 1 | — | 1 | 1 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | — | NNW 4 | NNW 3 | NW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 8 | 7 | 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 303 | 303 | 303 | 303 | 42 | 42 | 44 | 97 | 97 | 97 | 334 | 331 | 254 | 180 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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