Surf Forecasts:
How big are the waves at Castlerock today (12 Jun):
- Morning surf: Morning surf (12 Jun, local time) - 2.5ft (0.7m), 6s period with WNW swell.
- Afternoon surf: Afternoon surf (12 Jun, local time) - 3.5ft (1.1m), 8s period with WNW swell.
- Evening surf: Evening surf (12 Jun, local time) - 4.5ft (1.3m), 12s period with WNW swell.
The current surf forecast for Castlerock at 4PM is: 1.2m 8s primary swell from a West-northwest direction and 0.4m 13s secondary swell from a West-northwest direction (forecast issued at 12:00pm June 12). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Jun) | 2.5ft (0.7m) | 6s |
| Afternoon (12 Jun) | 3.5ft (1.1m) | 8s |
| Evening (12 Jun) | 4.5ft (1.3m) | 12s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Fri morning. Very mild (max 14°C on Fri morning, min 10°C on Sat night). Winds decreasing (strong winds from the W on Fri night, calm by Sun night). | ||||||||||||||||||||||||
Fri 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | WNW 6 | WNW 7 | WNW 8 | WNW 10 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | NW 12 | NW 12 | NW 11 | NW 11 | WNW 11 | NW 10 | NW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 5 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 36 | 101 | 155 | 334 | 722 | 1323 | 1302 | 1098 | 902 | 794 | 715 | 572 | 218 | 302 | 88 | 78 | 108 | 149 | 113 | 79 | 57 | 10 | 10 | 9 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | glassy | glassy | off | off |
High Tide | 4:44PM1.49m | 5:04AM1.70m | 5:33PM1.64m | 5:55AM1.74m | 6:21PM1.77m | 6:44AM1.74m | ||||||||||||||||||
Low Tide | 10:42AM0.30m | 10:50PM0.33m | 11:31AM0.22m | 11:49PM0.23m | 12:18PM0.17m | 00:46AM0.15m | ||||||||||||||||||
 |  |  | | |  | | |  | | | | |  | | | | | | | |  | | | |
 | 4:47 | — | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:46 | — | — | — | — | — | — | — | 4:46 | — |
 | — | — | — | — | 10:06 | — | — | — | — | — | — | — | 10:07 | — | — | — | — | — | — | — | 10:07 | — | — | 10:07 |
mm | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 12 | 11 | 11 | 11 | 10 | 11 | 12 | 12 | 12 | 11 | 11 | 11 | 11 |
Feels °C | 8 | 7 | 7 | 5 | 5 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 6 | 7 | 8 | 9 | 9 | 10 | 10 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 13 | NW 12 | WNW 12 | — | — | — | — | — | — | — | WNW 11 | NW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | NNW 8 | NNW 7 | NNW 5 | NNW 5 | NNW 5 |
| kJ | 30 | 17 | 64 | 144 | 722 | — | — | — | — | — | — | — | 218 | 302 | 56 | 38 | 29 | 16 | 16 | 79 | 57 | 8 | 8 | 9 |
Swell 2 Height (m) Direction Period (s) | NW 14 | WNW 13 | — | — | — | — | — | — | — | — | — | — | — | — | N 10 | NNW 10 | NNW 9 | — | — | WNW 9 | WNW 8 | NNW 7 | NNW 7 | WNW 8 |
| kJ | 8 | 18 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 19 | 34 | — | — | 16 | 7 | 10 | 10 | 6 |
Swell 3 Height (m) Direction Period (s) | W 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 8 | WNW 8 | WNW 8 | N 7 |
| kJ | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 14 | 7 | 7 | 1 |
Wind waves Height (m) Direction Period (s) | WNW 6 | WNW 7 | WNW 8 | WNW 10 | W 4 | WNW 12 | WNW 12 | WNW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NNW 7 | — | NW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | — | — | — | — | — |
| kJ | 36 | 101 | 155 | 334 | 20 | 1323 | 1302 | 1098 | 902 | 794 | 715 | 572 | 81 | — | 88 | 78 | 108 | 149 | 113 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 780 | 780 | 780 | 331 | 339 | 364 | 364 | 387 | 387 | 409 | 398 | 404 | 187 | 187 | 131 | 131 | 97 | 97 | 144 | 107 | 0 | 40 | 40 | 40 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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