Surf Forecasts:
How big are the waves at Castlerock today (26 Aug):
- Morning surf: Morning surf (26 Aug, local time) - 2ft (0.6m), 4s period with E swell.
- Afternoon surf: Afternoon surf (26 Aug, local time) - 1.5ft (0.5m), 4s period with E swell.
- Evening surf: Evening surf (26 Aug, local time) - 0.5ft (0.1m), 10s period with NW swell.
The current surf forecast for Castlerock at 5AM is: 0.6m 4s primary swell from a East direction and 0.2m 8s secondary swell from a West-northwest direction, 0.1m 9s secondary swell from a West direction (forecast issued at 12:00am August 26). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 Aug) | 2ft (0.6m) | 4s |
| Afternoon (26 Aug) | 1.5ft (0.5m) | 4s |
| Evening (26 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 Tue night. Very mild (max 19°C on Thu afternoon, min 14°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||||||||||
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) | W 9 | E 4 | E 4 | E 4 | E 4 | E 4 | ENE 4 | WNW 10 | WNW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | NW 4 | NW 4 | NNW 5 | NNW 5 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 3 | 9 | 16 | 12 | 10 | 7 | 5 | 10 | 19 | 24 | 23 | 22 | 21 | 20 | 15 | 15 | 7 | 7 | 6 | 6 | 7 | 15 | 19 | 16 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-off | cross | cross-off | cross-on | cross-on | cross | cross-off | cross-off | cross | cross | cross-on | on | on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 5:58AM1.43m | 6:23PM1.72m | 6:26AM1.53m | 6:51PM1.84m | 6:54AM1.61m | 7:18PM1.92m | ||||||||||||||||||
Low Tide | 00:25AM0.38m | 12:17PM0.22m | 00:54AM0.29m | 12:45PM0.12m | 1:22AM0.22m | 1:12PM0.06m | ||||||||||||||||||
 | |  |  | | | |  |  | |  | | | | |  | | | | | | | | | |
 | — | 6:20 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:36 | — | — | — | — | — | — | — | 8:32 | — | — | — | — | — | — | — | 8:30 | — |
mm | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 14 | 15 | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 16 | 18 | 19 | 18 | 17 | 16 | 16 | 15 | 16 | 16 | 16 | 15 | 14 |
Feels °C | 10 | 11 | 11 | 12 | 14 | 13 | 15 | 14 | 15 | 15 | 13 | 16 | 17 | 18 | 18 | 17 | 16 | 17 | 15 | 15 | 14 | 14 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | NW 8 | WNW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NE 3 | WNW 10 | NW 10 | ENE 4 | NW 9 | NW 9 | NW 9 | WNW 9 | WNW 9 | NE 4 | NNW 4 | NNW 4 | WNW 8 | NW 8 | NW 8 | NW 7 | NNW 5 |
| kJ | 3 | 6 | 2 | 2 | 2 | 2 | 2 | 3 | 19 | 24 | 4 | 22 | 21 | 20 | 15 | 15 | 3 | 3 | 3 | 6 | 2 | 2 | 2 | 16 |
Swell 2 Height (m) Direction Period (s) | W 9 | W 9 | W 9 | W 9 | W 9 | — | NW 11 | WNW 10 | — | N 4 | NW 10 | ENE 4 | — | — | — | — | N 4 | ENE 4 | WNW 8 | — | NW 8 | — | NW 8 | W 8 |
| kJ | 2 | 1 | 2 | 2 | 2 | — | 5 | 10 | — | 1 | 23 | 2 | — | — | — | — | 3 | 2 | 6 | — | 2 | — | 2 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 7 | N 7 | NW 7 | N 4 | — | — | — | — | — | WNW 8 | WNW 8 | ENE 3 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 2 | 1 | 2 | 1 | — | — | — | — | — | 7 | 7 | 1 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ENE 3 | E 4 | E 4 | E 4 | E 4 | E 4 | ENE 4 | ENE 3 | ENE 3 | ENE 4 | — | — | ENE 3 | ENE 3 | NE 3 | NE 3 | — | — | — | NW 4 | NW 4 | NW 4 | NNW 5 | — |
| kJ | 2 | 9 | 16 | 12 | 10 | 7 | 5 | 2 | 2 | 4 | — | — | 2 | 2 | 3 | 4 | — | — | — | 3 | 7 | 15 | 19 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 40 | 40 | 97 | 145 | 254 | 97 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 254 | 321 | 283 | 273 | 284 | 282 | 300 | 266 | 97 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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