Surf Forecasts:
How big are the waves at Castlerock today (11 Jun):
- Afternoon surf: Afternoon surf (11 Jun, local time) - 2.5ft (0.8m), 9s period with WNW swell.
- Evening surf: Evening surf (11 Jun, local time) - 3.5ft (1.0m), 8s period with WNW swell.
The current surf forecast for Castlerock at 10PM is: 1.0m 8s primary swell from a West-northwest direction (forecast issued at 06:00pm June 11). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Jun) | - | - |
| Afternoon (11 Jun) | 2.5ft (0.8m) | 9s |
| Evening (11 Jun) | 3.5ft (1.0m) | 8s |
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 15°C on Thu afternoon, min 10°C on Sat night). Winds increasing (light winds from the SW on Thu night, strong winds from the WSW by Fri afternoon). | ||||||||||||||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
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 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | WNW 8 | WNW 10 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | NW 12 | NW 11 | NW 11 | NW 7 | NW 8 | NW 7 | NNW 7 | NNW 8 | NNW 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 94 | 147 | 131 | 105 | 84 | 80 | 46 | 101 | 159 | 399 | 1186 | 1320 | 1277 | 1080 | 972 | 872 | 702 | 615 | 165 | 164 | 122 | 90 | 138 | 119 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 3:51PM1.35m | 4:10AM1.64m | 4:44PM1.49m | 5:04AM1.70m | 5:33PM1.64m | 5:55AM1.74m | ||||||||||||||||||
Low Tide | 9:46PM0.43m | 10:42AM0.30m | 10:50PM0.33m | 11:31AM0.22m | 11:49PM0.23m | 12:18PM0.17m | ||||||||||||||||||
 | |  |  |  | |  | | | | |  | | | | | | | | | | | | | |
 | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:46 | — | — | — |
 | — | — | 10:05 | — | — | — | — | — | — | — | 10:06 | — | — | — | — | — | — | — | 10:07 | — | — | — | — | 10:07 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 12 | 11 | 11 | 13 | 14 | 14 | 14 | 13 | 12 | 11 | 11 | 11 | 12 | 13 | 13 | 12 | 11 | 11 | 10 | 11 | 11 | 11 |
Feels °C | 11 | 10 | 7 | 6 | 8 | 10 | 8 | 7 | 6 | 5 | 4 | 3 | 3 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 8 | — | WNW 8 | WNW 8 | WNW 8 | WNW 9 | WNW 11 | WNW 13 | NW 12 | — | — | — | WNW 12 | — | — | — | — | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 |
| kJ | 94 | 147 | — | 105 | 84 | 80 | 30 | 12 | 64 | 140 | — | — | — | 1080 | — | — | — | — | 130 | 69 | 56 | 55 | 34 | 16 |
Swell 2 Height (m) Direction Period (s) | ESE 3 | — | — | — | — | W 9 | NW 12 | WNW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 9 | — | — |
| kJ | 1 | — | — | — | — | 60 | 5 | 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | 32 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 15 | W 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 4 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 3 | — | WNW 8 | — | — | — | WNW 7 | WNW 7 | WNW 8 | WNW 10 | WNW 12 | WNW 12 | WNW 12 | — | WNW 12 | NW 12 | NW 11 | NW 11 | NW 7 | NW 8 | NW 7 | NNW 7 | NNW 8 | NNW 8 |
| kJ | 5 | — | 131 | — | — | — | 46 | 101 | 159 | 399 | 1186 | 1320 | 1277 | — | 972 | 872 | 702 | 615 | 165 | 164 | 122 | 90 | 138 | 119 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 336 | 387 | 347 | 187 | 9 | 9 | 803 | 780 | 772 | 772 | 364 | 364 | 387 | 364 | 387 | 407 | 528 | 407 | 187 | 187 | 251 | 54 | 71 | 97 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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