Surf Forecasts:
How big are the waves at Castlerock today (13 Nov):
- Morning surf: Morning surf (13 Nov, local time) - 3ft (0.9m), 8s period with NNW swell.
- Afternoon surf: Afternoon surf (13 Nov, local time) - 2.5ft (0.7m), 6s period with NW swell.
- Evening surf: Evening surf (13 Nov, local time) - 2.5ft (0.8m), 6s period with NNW swell.
The current surf forecast for Castlerock at 8AM is: 1.0m 9s primary swell from a North-northwest direction and 0.4m 9s secondary swell from a North-northwest direction (forecast issued at 11:00pm November 12). The wind direction is predicted to be cross-shore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Nov) | 3ft (0.9m) | 8s |
| Afternoon (13 Nov) | 2.5ft (0.7m) | 6s |
| Evening (13 Nov) | 2.5ft (0.8m) | 6s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 6mm), mostly falling on Sat night. Very mild (max 10°C on Sat night, min 5°C on Fri night). Winds increasing (light winds from the W on Thu night, near gales from the NNW by Sun afternoon). | ||||||||||||||||||||
Friday 13 | Saturday 14 | Sun 15 | ||||||||||||||||||
9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | |
Swell Height Map |  | |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | NNW 7 | NNW 12 | NNW 6 | NNW 9 | NNW 8 | NNW 8 | NW 6 | NW 6 | NNW 6 | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 | NW 9 | NW 9 | NW 10 | NNW 9 | NW 9 | N 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 198 | 140 | 88 | 169 | 113 | 88 | 32 | 42 | 49 | 44 | 53 | 56 | 60 | 67 | 79 | 128 | 137 | 113 | 84 | 188 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off |
High Tide | 7:19PM1.46m | 7:43AM1.62m | 7:50PM1.36m | 8:21AM1.52m | 8:23PM1.26m | |||||||||||||||
Low Tide | 1:32AM0.32m | 2:16PM0.46m | 2:05AM0.39m | 3:00PM0.58m | 2:43AM0.47m | |||||||||||||||
 | | |  |  | | | | | | | |  | | | |  | | | | |
 | — | — | — | 7:54 | — | — | — | — | — | — | — | 7:56 | — | — | — | — | — | — | — | 7:58 |
 | — | — | — | — | — | — | 4:27 | — | — | — | — | — | — | — | 4:24 | — | — | — | — | 4:22 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | 1 |
Temp °C | 9 | 8 | 8 | 7 | 7 | 8 | 8 | 8 | 7 | 5 | 5 | 6 | 6 | 8 | 9 | 9 | 9 | 9 | 10 | 9 |
Feels °C | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 2 | -1 | -1 | 0 | -1 | 2 | 3 | 2 | 2 | 3 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | N 12 | NNW 6 | NNW 6 | NNW 9 | NNW 8 | NNW 8 | NW 6 | NW 6 | NNW 6 | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 | NW 9 | NW 9 | NW 10 | NNW 9 | NW 9 | NNW 9 |
| kJ | 76 | 123 | 88 | 169 | 113 | 88 | 32 | 42 | 49 | 44 | 53 | 56 | 60 | 67 | 79 | 128 | 137 | 113 | 84 | 73 |
Swell 2 Height (m) Direction Period (s) | — | NNW 12 | NNW 10 | NNW 9 | NNW 8 | — | NNW 8 | N 9 | W 15 | W 15 | W 15 | W 14 | W 13 | W 13 | W 13 | W 12 | — | W 12 | NNW 18 | N 16 |
| kJ | — | 140 | 71 | 32 | 28 | — | 14 | 6 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | — | 3 | 30 | 188 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | NW 8 | — | — | — | — | — | — | — | — | — | — | — | W 11 | ESE 4 |
| kJ | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 |
Wind waves Height (m) Direction Period (s) | NNW 7 | — | — | — | — | — | — | — | — | SSW 2 | S 2 | S 2 | S 3 | S 3 | SSE 3 | SSE 3 | SSE 3 | SSE 4 | SSE 4 | S 3 |
| kJ | 198 | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 3 | 5 | 3 | 3 | 9 | 13 | 7 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 151 | 114 | 27 | 9 | 9 | 27 | 156 | 27 | 27 | 14 | 8 | 0 | 0 | 0 | 0 | 194 | 185 | 83 | 0 | 0 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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