Surf Forecasts:
How big are the waves at Castlerock today (30 Oct):
- Morning surf: Morning surf (30 Oct, local time) - 1.5ft (0.4m), 14s period with WNW swell.
- Afternoon surf: Afternoon surf (30 Oct, local time) - 1.5ft (0.4m), 13s period with WNW swell.
- Evening surf: Evening surf (30 Oct, local time) - 1.5ft (0.4m), 16s period with NW swell.
The current surf forecast for Castlerock at 7PM is: 0.4m 12s primary swell from a West-northwest direction (forecast issued at 11:00am October 30). An open ocean swell of 0.3m 4s is not directed at the surf break, a second open ocean swell of 0.3m 4s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Oct) | 1.5ft (0.4m) | 14s |
| Afternoon (30 Oct) | 1.5ft (0.4m) | 13s |
| Evening (30 Oct) | 1.5ft (0.4m) | 16s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 6mm), mostly falling on Sat afternoon. Very mild (max 14°C on Fri morning, min 8°C on Sun night). Winds decreasing (fresh winds from the SSE on Fri morning, light winds from the NE by Sun night). | |||||||||||||||||||||
Fri 30 | Saturday 31 | Sunday 1 | |||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | WNW 14 | WNW 13 | WNW 13 | WNW 12 | NW 16 | NW 15 | NW 14 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 71 | 69 | 66 | 60 | 85 | 255 | 293 | 352 | 342 | 380 | 380 | 374 | 411 | 265 | 260 | 265 | 273 | 265 | 240 | 169 | 161 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on |
High Tide | 8:15AM1.72m | 8:38PM1.43m | 9:10AM1.61m | 9:34PM1.24m | 10:23AM1.50m | ||||||||||||||||
Low Tide | 2:46PM0.32m | 2:46AM0.38m | 4:00PM0.47m | 3:50AM0.49m | 5:37PM0.57m | ||||||||||||||||
 |  | |  | |  | | |  | |  | |  | | | | | | | | | |
 | 7:26 | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:30 | — | — | — | — | — |
 | — | — | 4:53 | — | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — | — | 4:50 | — | — |
mm | — | — | — | — | — | 1 | 1 | 1 | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 13 | 11 | 10 | 10 | 10 | 9 | 10 | 9 | 9 | 9 | 9 | 9 |
Feels °C | 6 | 9 | 9 | 9 | 10 | 9 | 9 | 9 | 9 | 11 | 9 | 6 | 6 | 6 | 5 | 7 | 5 | 5 | 5 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | WNW 14 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | NW 15 | NW 14 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 |
| kJ | 71 | 69 | 66 | 60 | 55 | 255 | 293 | 352 | 342 | 380 | 380 | 374 | 411 | 265 | 260 | 265 | 273 | 265 | 240 | 169 | 161 |
Swell 2 Height (m) Direction Period (s) | N 12 | N 12 | N 12 | ESE 4 | NW 16 | ESE 4 | N 10 | E 10 | E 9 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 3 | 3 | 4 | 85 | 3 | 2 | 7 | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | NW 8 | N 8 | — | NW 16 | N 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 1 | — | 40 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | SSE 4 | SSE 4 | SSE 4 | SE 4 | — | ESE 4 | SE 4 | — | — | — | — | — | NNW 4 | NNW 4 | NNW 4 | NNW 4 | NNW 4 | NNW 4 | N 4 | N 5 |
| kJ | 26 | 21 | 15 | 3 | 3 | — | 1 | 2 | — | — | — | — | — | 7 | 7 | 6 | 5 | 12 | 14 | 18 | 27 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 121 | 311 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 72 | 131 | 131 | 114 | 114 | 71 | 71 | 71 | 71 | 72 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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