Surf Forecasts:
How big are the waves at Castlerock today (10 Oct):
- Afternoon surf: Afternoon surf (10 Oct, local time) - 11ft (3.5m), 12s period with NW swell.
- Evening surf: Evening surf (10 Oct, local time) - 10ft (3.0m), 12s period with NW swell.
The current surf forecast for Castlerock at 11PM is: 2.5m 12s primary swell from a Northwest direction (forecast issued at 06:00pm October 10). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Oct) | - | - |
| Afternoon (10 Oct) | 11ft (3.5m) | 12s |
| Evening (10 Oct) | 10ft (3.0m) | 12s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Mon night. Very mild (max 18°C on Mon night, min 9°C on Sat night). Winds decreasing (strong winds from the WNW on Sat afternoon, light winds from the W by Sat night). | |||||||||||||||||||
Sat 10 | Sunday 11 | Monday 12 | |||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | WNW 9 | W 12 | WNW 12 | WNW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 2920 | 2346 | 1903 | 1495 | 1103 | 806 | 604 | 424 | 286 | 188 | 123 | 79 | 39 | 18 | 10 | 8 | 12 | 15 | 14 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off |
High Tide | 6:43PM1.95m | 6:57AM1.74m | 7:14PM1.89m | 7:27AM1.76m | 7:43PM1.79m | ||||||||||||||
Low Tide | 1:09AM0.08m | 1:10PM0.04m | 1:35AM0.11m | 1:43PM0.09m | |||||||||||||||
 |  | | |  | |  | | |  | | | |  | | | | | | |
 | — | — | — | — | — | 7:47 | — | — | — | — | — | — | — | 7:48 | — | — | — | — | — |
 | 6:40 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:36 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 12 | 11 | 11 | 11 | 10 | 9 | 9 | 11 | 12 | 11 | 12 | 13 | 13 | 13 | 13 | 14 | 15 | 16 | 16 |
Feels °C | 3 | 3 | 4 | 6 | 5 | 6 | 6 | 6 | 7 | 6 | 6 | 6 | 7 | 9 | 10 | 11 | 13 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | — | — | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 8 | ESE 5 | E 5 | WNW 9 | WNW 12 | WNW 12 |
| kJ | — | — | 1903 | 1495 | 1103 | 806 | 604 | 424 | 286 | 188 | 123 | 79 | 39 | 17 | 28 | 13 | 8 | 15 | 14 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | WNW 10 | — | WNW 9 | WNW 10 | NW 8 | WNW 9 | W 12 | NW 9 | NW 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | 22 | — | 8 | 18 | 10 | 8 | 12 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 15 | WNW 10 | NNW 8 | NW 8 | NW 8 | N 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 9 | 6 | 2 | 2 | 1 |
Wind waves Height (m) Direction Period (s) | NW 12 | NW 12 | — | — | — | — | — | — | SE 2 | SE 3 | ESE 4 | ESE 5 | ESE 5 | ESE 6 | ESE 6 | — | ESE 5 | SE 4 | SE 4 |
| kJ | 2920 | 2346 | — | — | — | — | — | — | 1 | 3 | 18 | 61 | 75 | 47 | 39 | — | 13 | 10 | 13 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 811 | 387 | 384 | 114 | 18 | 9 | 0 | 2 | 2 | 2 | 260 | 122 | 83 | 56 | 40 | 40 | 56 | 266 | 270 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
Header Global | |||||||||||||||||||
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