Surf Forecasts:
How big are the waves at Castlerock today (12 Jun):
- 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 11PM is: 1.6m 12s primary swell from a West-northwest direction and 0.9m 4s secondary swell from a West direction (forecast issued at 06:00pm June 12). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Jun) | - | - |
| 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 ForecastMostly dry. Very mild (max 17°C on Mon morning, min 10°C on Sat night). Winds decreasing (fresh winds from the W on Fri afternoon, calm by Sun night). | ||||||||||||||||||||||||
Fri 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
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 | 10 AM | 1 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | WNW 8 | WNW 10 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | NW 12 | NW 12 | NW 11 | NW 11 | WNW 11 | NW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 5 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 159 | 334 | 722 | 1237 | 1299 | 1022 | 902 | 794 | 702 | 558 | 281 | 107 | 83 | 83 | 114 | 108 | 75 | 49 | 33 | 21 | 17 | 9 | 9 | 3 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | on | on | on | glassy | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:44PM1.49m | 5:04AM1.70m | 5:33PM1.64m | 5:55AM1.74m | 6:21PM1.77m | 6:44AM1.74m | ||||||||||||||||||
Low Tide | 10:50PM0.33m | 11:31AM0.22m | 11:49PM0.23m | 12:18PM0.17m | 00:46AM0.15m | |||||||||||||||||||
 | | |  |  |  | | | | |  |  | | | | | | | | | | | | | |
 | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:46 | — | — | — | — | — | — | — | 4:46 | — | — | — |
 | — | — | 10:06 | — | — | — | — | — | — | — | 10:07 | — | — | — | — | — | — | — | 10:07 | — | — | — | — | 10:07 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 12 | 12 | 11 | 11 | 12 | 13 | 13 | 12 | 11 | 11 | 11 | 10 | 11 | 12 | 12 | 12 | 11 | 11 | 10 | 11 | 14 | 17 |
Feels °C | 7 | 5 | 4 | 5 | 4 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 6 | 8 | 9 | 9 | 10 | 10 | 9 | 7 | 8 | 11 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 13 | NW 12 | WNW 12 | — | — | WNW 12 | — | — | — | — | NNW 7 | NW 7 | NNW 7 | WNW 10 | NNW 7 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 5 |
| kJ | 64 | 144 | 722 | — | — | 1022 | — | — | — | — | 75 | 107 | 83 | 38 | 114 | 108 | 75 | 49 | 33 | 21 | 17 | 9 | 9 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WNW 10 | WNW 10 | NNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | N 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 95 | 56 | 20 | 29 | 16 | 16 | 16 | 14 | 7 | 7 | 6 | 6 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | N 10 | — | — | — | — | — | — | — | — | — | W 9 | NW 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | 1 | 2 |
Wind waves Height (m) Direction Period (s) | WNW 8 | WNW 10 | W 4 | WNW 12 | WNW 12 | — | NW 12 | NW 12 | NW 11 | NW 11 | WNW 11 | — | — | NNW 7 | — | — | — | — | — | — | — | — | — | — |
| kJ | 159 | 334 | 28 | 1237 | 1299 | — | 902 | 794 | 702 | 558 | 281 | — | — | 83 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 780 | 331 | 339 | 364 | 339 | 387 | 387 | 409 | 398 | 382 | 187 | 187 | 144 | 114 | 126 | 97 | 131 | 107 | 16 | 40 | 40 | 40 | 40 | 40 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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