Surf Forecasts:
How big are the waves at Castlerock today (14 Oct):
- Morning surf: Morning surf (14 Oct, local time) - 4.5ft (1.3m), 12s period with NW swell.
- Afternoon surf: Afternoon surf (14 Oct, local time) - 4ft (1.2m), 13s period with NW swell.
- Evening surf: Evening surf (14 Oct, local time) - 5.5ft (1.7m), 15s period with WNW swell.
The current surf forecast for Castlerock at 9PM is: 1.7m 15s primary swell from a West-northwest direction (forecast issued at 12:00pm October 14). An open ocean swell of 0.1m 7s is not directed at the surf break, a second open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Oct) | 4.5ft (1.3m) | 12s |
| Afternoon (14 Oct) | 4ft (1.2m) | 13s |
| Evening (14 Oct) | 5.5ft (1.7m) | 15s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 30mm), heaviest during Wed night. Very mild (max 16°C on Wed afternoon, min 9°C on Thu night). Mainly strong winds. | |||||||||||||||||||||
Wed 14 | Thursday 15 | Friday 16 | |||||||||||||||||||
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 12 | NW 13 | WNW 13 | WNW 14 | NW 16 | NW 17 | NW 16 | NW 15 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NNW 11 | NNW 11 | NNW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 361 | 418 | 563 | 1057 | 1591 | 2408 | 2133 | 1692 | 1624 | 1641 | 1527 | 1339 | 1279 | 1083 | 976 | 944 | 851 | 726 | 645 | 513 | 378 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | on |
High Tide | 8:26AM1.68m | 8:40PM1.51m | 8:57AM1.59m | 9:08PM1.37m | 9:31AM1.46m | 9:39PM1.23m | |||||||||||||||
Low Tide | 2:48PM0.29m | 2:49AM0.35m | 3:23PM0.43m | 3:17AM0.45m | 4:05PM0.58m | ||||||||||||||||
 | | |  | |  | | |  | | |  | |  |  | |  | | | | | |
 | 7:52 | — | — | — | — | — | — | 7:54 | — | — | — | — | — | — | — | 7:56 | — | — | — | — | — |
 | — | — | 6:30 | — | — | — | — | — | — | — | 6:29 | — | — | — | — | — | — | — | 6:25 | — | — |
mm | — | — | — | 1 | 5 | 6 | 8 | 5 | 1 | — | — | — | — | — | — | 1 | 1 | 1 | 1 | — | — |
Temp °C | 13 | 15 | 16 | 16 | 14 | 12 | 11 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 9 | 9 | 10 | 11 | 12 | 11 | 11 |
Feels °C | 6 | 6 | 8 | 9 | 13 | 10 | 9 | 9 | 7 | 7 | 7 | 7 | 6 | 5 | 5 | 5 | 6 | 5 | 5 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | NW 12 | NW 13 | WNW 13 | WNW 14 | NW 16 | NW 17 | NW 16 | NW 15 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | WNW 11 | WNW 12 | NNW 10 |
| kJ | 361 | 418 | 563 | 1057 | 1591 | 2408 | 2133 | 1692 | 1624 | 1641 | 1527 | 1339 | 1279 | 1083 | 976 | 944 | 851 | 726 | 97 | 119 | 378 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SE 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 15 | WNW 12 |
| kJ | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 43 | 127 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 96 |
Wind waves Height (m) Direction Period (s) | SSE 3 | SSE 4 | S 4 | S 4 | S 4 | — | — | — | — | — | W 3 | — | — | — | — | — | — | — | NNW 11 | NNW 11 | — |
| kJ | 8 | 15 | 13 | 9 | 7 | — | — | — | — | — | 5 | — | — | — | — | — | — | — | 645 | 513 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 492 | 690 | 688 | 688 | 0 | 78 | 27 | 0 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 339 | 339 | 440 | 613 | 349 | 300 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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