Surf Forecasts:
How big are the waves at Castlerock today (09 Oct):
- Morning surf: Morning surf (09 Oct, local time) - 5ft (1.6m), 10s period with WNW swell.
- Afternoon surf: Afternoon surf (09 Oct, local time) - 6ft (1.9m), 9s period with WNW swell.
- Evening surf: Evening surf (09 Oct, local time) - 8ft (2.5m), 10s period with WNW swell.
The current surf forecast for Castlerock at 10AM is: 1.5m 10s primary swell from a West-northwest direction (forecast issued at 06:00am October 09). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Oct) | 5ft (1.6m) | 10s |
| Afternoon (09 Oct) | 6ft (1.9m) | 9s |
| Evening (09 Oct) | 8ft (2.5m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Fri morning. Very mild (max 12°C on Fri morning, min 9°C on Sun morning). Winds decreasing (strong winds from the WNW on Fri night, light winds from the W by Sat night). | |||||||||||||||||||||||
Friday 9 | Saturday 10 | Sunday 11 | |||||||||||||||||||||
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 | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 10 | WNW 11 | NW 12 | NW 12 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 10 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 192 | 485 | 412 | 449 | 643 | 766 | 1597 | 2547 | 3154 | 3959 | 4343 | 3959 | 3162 | 2513 | 1935 | 1521 | 1142 | 836 | 572 | 400 | 255 | 188 | 108 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:53AM1.59m | 6:11PM1.96m | 6:26AM1.68m | 6:43PM1.95m | 6:57AM1.74m | 7:14PM1.89m | |||||||||||||||||
Low Tide | 12:02PM0.08m | 00:42AM0.08m | 12:36PM0.04m | 1:09AM0.08m | 1:10PM0.04m | ||||||||||||||||||
 |  |  |  |  |  | | |  | | |  | | | | | | | | | | | | |
 | — | 7:43 | — | — | — | — | — | — | — | 7:45 | — | — | — | — | — | — | — | 7:47 | — | — | — | — | — |
 | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:38 | — | — |
mm | 3 | 1 | — | 1 | — | — | 1 | 1 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 13 | 11 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 10 | 12 | 11 | 12 |
Feels °C | 10 | 6 | 4 | 3 | 3 | 2 | 1 | -1 | -1 | -1 | -1 | 1 | 3 | 4 | 4 | 6 | 7 | 8 | 5 | 5 | 7 | 4 | 5 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 10 |
| kJ | 192 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1935 | 1521 | 1142 | 836 | 572 | 400 | 255 | 188 | 108 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 10 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 35 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 3 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 10 | WNW 11 | NW 12 | NW 12 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | — | — | — | — | — | — | SE 2 | SE 3 | SE 4 |
| kJ | 8 | 485 | 412 | 449 | 643 | 766 | 1597 | 2547 | 3154 | 3959 | 4343 | 3959 | 3162 | 2513 | — | — | — | — | — | — | 1 | 8 | 26 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 378 | 9 | 328 | 341 | 366 | 1034 | 1174 | 1035 | 772 | 408 | 380 | 772 | 772 | 772 | 387 | 387 | 71 | 18 | 9 | 0 | 0 | 2 | 2 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||||
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