Surf Forecasts:
How big are the waves at Castlerock today (09 Oct):
- 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 (2.4m), 10s period with WNW swell.
The current surf forecast for Castlerock at 10PM is: 2.5m 11s primary swell from a West-northwest direction (forecast issued at 06:00pm October 09). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Oct) | - | - |
| Afternoon (09 Oct) | 6ft (1.9m) | 9s |
| Evening (09 Oct) | 8ft (2.4m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Fri night. Very mild (max 16°C on Mon morning, min 9°C on Sat night). Winds decreasing (strong winds from the WNW on Fri night, light winds from the SSW by Sat night). | |||||||||||||||||||
Fri 9 | Saturday 10 | Sunday 11 | |||||||||||||||||
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 9 | WNW 10 | WNW 11 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 643 | 750 | 1498 | 2547 | 3010 | 3423 | 3529 | 3368 | 2920 | 2408 | 1935 | 1627 | 1193 | 878 | 664 | 424 | 286 | 188 | 101 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 6:11PM1.96m | 6:26AM1.68m | 6:43PM1.95m | 6:57AM1.74m | 7:14PM1.89m | ||||||||||||||
Low Tide | 00:42AM0.08m | 12:36PM0.04m | 1:09AM0.08m | 1:10PM0.04m | |||||||||||||||
 |  |  | |  | |  |  |  | | | | | | | | | |  | |
 | — | — | — | — | — | 7:45 | — | — | — | — | — | — | — | 7:47 | — | — | — | — | — |
 | 6:44 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:38 | — | — |
mm | — | — | 1 | 1 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 11 | 12 | 11 | 11 | 11 | 10 | 9 | 9 | 11 | 12 | 12 | 13 |
Feels °C | 3 | 2 | 1 | 1 | 0 | -1 | 0 | 2 | 3 | 2 | 5 | 6 | 7 | 6 | 6 | 6 | 6 | 6 | 6 |
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 |
| kJ | — | — | — | — | — | — | — | — | — | — | 1935 | 1627 | 1193 | 878 | 664 | 424 | 286 | 188 | 101 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 9 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 35 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 9 | WNW 10 | WNW 11 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | — | — | — | — | — | — | SE 3 | SE 3 | SE 4 |
| kJ | 643 | 750 | 1498 | 2547 | 3010 | 3423 | 3529 | 3368 | 2920 | 2408 | — | — | — | — | — | — | 3 | 9 | 26 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1092 | 1092 | 772 | 839 | 794 | 772 | 772 | 772 | 772 | 387 | 384 | 71 | 9 | 0 | 0 | 2 | 2 | 283 | 118 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
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