Surf Forecasts:
How big are the waves at Castlerock today (15 Oct):
- Morning surf: Morning surf (15 Oct, local time) - 6.5ft (2.0m), 15s period with NW swell.
- Afternoon surf: Afternoon surf (15 Oct, local time) - 7ft (2.1m), 14s period with NW swell.
- Evening surf: Evening surf (15 Oct, local time) - 6.5ft (2.0m), 13s period with NW swell.
The current surf forecast for Castlerock at 10AM is: 2.0m 14s primary swell from a Northwest direction (forecast issued at 06:00am October 15). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Oct) | 6.5ft (2.0m) | 15s |
| Afternoon (15 Oct) | 7ft (2.1m) | 14s |
| Evening (15 Oct) | 6.5ft (2.0m) | 13s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Very mild (max 13°C on Thu afternoon, min 8°C on Thu night). Winds decreasing (fresh winds from the NNW on Fri afternoon, light winds from the NE by Sat afternoon). | |||||||||||||||||||||||
Thursday 15 | Friday 16 | Saturday 17 | |||||||||||||||||||||
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 16 | NW 15 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 9 | NNW 9 | NW 13 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 2133 | 1692 | 1624 | 1618 | 1401 | 1319 | 1259 | 970 | 869 | 798 | 696 | 683 | 505 | 441 | 334 | 258 | 216 | 234 | 416 | 314 | 263 | 250 | 180 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross-off |
High Tide | 8:57AM1.59m | 9:08PM1.37m | 9:31AM1.46m | 9:39PM1.23m | 10:14AM1.32m | ||||||||||||||||||
Low Tide | 2:49AM0.35m | 3:23PM0.43m | 3:17AM0.45m | 4:05PM0.58m | 3:50AM0.56m | 5:08PM0.73m | |||||||||||||||||
 | |  | |  |  | | |  | |  | | | | | | | | |  | | | | |
 | — | 7:54 | — | — | — | — | — | — | — | 7:56 | — | — | — | — | — | — | — | 7:58 | — | — | — | — | — |
 | — | — | — | — | 6:29 | — | — | — | — | — | — | — | 6:25 | — | — | — | — | — | — | — | 6:23 | — | — |
mm | 3 | 2 | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 11 | 11 | 12 | 13 | 11 | 10 | 9 | 9 | 8 | 10 | 11 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 10 | 10 | 10 | 9 |
Feels °C | 8 | 7 | 7 | 7 | 8 | 7 | 6 | 5 | 5 | 3 | 6 | 5 | 5 | 5 | 6 | 5 | 6 | 6 | 7 | 8 | 8 | 9 | 6 |
Swell 1 Height (m) Direction Period (s) | NW 16 | NW 15 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | WNW 12 | WNW 12 | NW 12 | NW 9 | NNW 9 | NNW 7 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 |
| kJ | 2133 | 1692 | 1624 | 1618 | 1401 | 1319 | 1259 | 970 | 869 | 798 | 696 | 683 | 127 | 127 | 135 | 258 | 216 | 96 | 416 | 314 | 263 | 250 | 180 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 15 | NNW 14 | NW 11 | NW 11 | NW 13 | N 13 | NNW 9 | NNW 8 | N 9 | N 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 42 | 63 | 133 | 133 | 234 | 30 | 16 | 14 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 14 | NNW 13 | N 13 | N 9 | N 13 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 94 | 59 | 55 | 2 | 14 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | WSW 3 | — | — | — | — | — | — | — | NW 11 | NW 10 | NW 10 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 3 | — | — | — | — | — | — | — | 505 | 441 | 334 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 0 | 71 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 339 | 339 | 439 | 599 | 325 | 236 | 72 | 71 | 71 | 70 | 52 | 25 | 0 | 0 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||||
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