Surf Forecasts:
How big are the waves at Castlerock today (12 Nov):
- Morning surf: Morning surf (12 Nov, local time) - 6ft (1.8m), 8s period with NNW swell.
- Afternoon surf: Afternoon surf (12 Nov, local time) - 6ft (1.8m), 8s period with NNW swell.
- Evening surf: Evening surf (12 Nov, local time) - 4.5ft (1.4m), 7s period with NNW swell.
The current surf forecast for Castlerock at 7PM is: 1.7m 7s primary swell from a North-northwest direction and 0.4m 13s secondary swell from a North-northwest direction (forecast issued at 11:00am November 12). The wind direction is predicted to be onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Nov) | 6ft (1.8m) | 8s |
| Afternoon (12 Nov) | 6ft (1.8m) | 8s |
| Evening (12 Nov) | 4.5ft (1.4m) | 7s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Sat night. Mild temperatures (max 9°C on Thu morning, min 4°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||||||
Thu 12 | Friday 13 | Saturday 14 | Sun 15 | |||||||||||||||||||||
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 | 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 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 12 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NW 6 | NW 6 | NNW 6 | NNW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NNW 9 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 16 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 346 | 406 | 385 | 319 | 191 | 140 | 216 | 169 | 116 | 88 | 39 | 37 | 52 | 59 | 79 | 84 | 88 | 100 | 145 | 200 | 196 | 154 | 106 | 280 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | 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 | 7:09AM1.69m | 7:19PM1.46m | 7:43AM1.62m | 7:50PM1.36m | 8:21AM1.52m | 8:23PM1.26m | ||||||||||||||||||
Low Tide | 1:38PM0.35m | 1:32AM0.32m | 2:16PM0.46m | 2:05AM0.39m | 3:00PM0.58m | 2:43AM0.47m | ||||||||||||||||||
 |  |  |  | | | |  | | | | | | | | | | | | | | |  | | |
 | 7:52 | — | — | — | — | — | — | 7:54 | — | — | — | — | — | — | — | 7:56 | — | — | — | — | — | — | — | 7:58 |
 | — | — | 4:28 | — | — | — | — | — | — | — | 4:27 | — | — | — | — | — | — | — | 4:24 | — | — | — | — | 4:22 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 9 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 8 | 8 | 8 | 6 | 4 | 6 | 7 | 6 | 8 | 9 | 8 | 9 | 8 | 8 | 9 |
Feels °C | 1 | 1 | 0 | 1 | 1 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 0 | -2 | -1 | 0 | -1 | 3 | 3 | 2 | 2 | 1 | 2 | 5 |
Swell 1 Height (m) Direction Period (s) | — | N 14 | NNW 13 | NNW 13 | NNW 7 | NNW 7 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NW 6 | NW 6 | NNW 6 | NNW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NNW 9 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 |
| kJ | — | 15 | 59 | 56 | 191 | 111 | 216 | 169 | 116 | 88 | 39 | 37 | 52 | 59 | 79 | 84 | 88 | 100 | 145 | 200 | 196 | 154 | 106 | 106 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | N 12 | NNW 12 | NNW 9 | NNW 9 | — | — | NNW 8 | N 9 | W 15 | W 15 | W 15 | W 14 | W 13 | W 13 | W 13 | W 12 | — | — | NNW 17 | NNW 16 |
| kJ | — | — | — | — | 76 | 140 | 50 | 42 | — | — | 24 | 6 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | — | — | 59 | 280 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NW 8 | — | — | — | — | — | — | — | — | — | — | — | W 13 | W 13 |
| kJ | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 |
Wind waves Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 7 | — | — | — | — | — | — | — | — | SW 2 | SSW 2 | SSW 2 | S 2 | S 3 | SSE 3 | SSE 3 | SSE 3 | SSE 3 | SSE 3 | SSE 4 | SE 4 |
| kJ | 346 | 406 | 385 | 319 | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 2 | 3 | 4 | 3 | 5 | 9 | 9 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 399 | 399 | 336 | 114 | 114 | 114 | 18 | 18 | 0 | 54 | 142 | 27 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 185 | 0 | 0 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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