Surf Forecasts:
How big are the waves at Castlerock today (24 Oct):
- Afternoon surf: Afternoon surf (24 Oct, local time) - 6ft (1.8m), 12s period with WNW swell.
- Evening surf: Evening surf (24 Oct, local time) - 15ft (4.5m), 15s period with WNW swell.
The current surf forecast for Castlerock at 11PM is: 5.0m 16s primary swell from a West-northwest direction (forecast issued at 06:00pm October 24). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Oct) | - | - |
| Afternoon (24 Oct) | 6ft (1.8m) | 12s |
| Evening (24 Oct) | 15ft (4.5m) | 15s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 33mm), heaviest during Sat afternoon. Very mild (max 16°C on Mon afternoon, min 8°C on Sun night). Winds decreasing (severe gales from the W on Sat night, light winds from the S by Sun night). | |||||||||||||||||||
Sat 24 | Sunday 25 | Monday 26 | |||||||||||||||||
4 PM | 7 PM | 10 PM | 1 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 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 12 | WNW 12 | WNW 15 | NW 16 | NW 16 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NNW 11 | NW 10 | NW 10 | NW 10 | WNW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 897 | 1277 | 9533 | 19400 | 17481 | 14060 | 12340 | 10288 | 7828 | 5222 | 3368 | 2146 | 1419 | 932 | 397 | 377 | 160 | 110 | 99 |
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 | cross-off | off | cross-off | cross-off | cross-off | off | off | off |
High Tide | 5:40PM1.85m | 5:59AM1.67m | 6:14PM1.93m | 6:34AM1.76m | 6:50PM1.95m | ||||||||||||||
Low Tide | 00:10AM0.12m | 12:07PM0.13m | 00:40AM0.06m | 12:43PM0.07m | |||||||||||||||
 |  | | | | |  | | |  | |  | | |  |  | | | | |
 | — | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 8:17 | — | — | — | — | — |
 | 6:07 | — | — | — | — | — | — | — | 5:05 | — | — | — | — | — | — | — | 6:02 | — | — |
mm | 6 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | 3 | 6 | 1 | 2 | 1 |
Temp °C | 10 | 9 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 10 | 10 | 9 | 8 | 8 | 9 | 13 | 15 | 16 | 15 |
Feels °C | -2 | -4 | -5 | -6 | -5 | -6 | -5 | -4 | -2 | 0 | 2 | 4 | 3 | 3 | 1 | 6 | 11 | 12 | 9 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | WNW 12 | — | — | — | — | — | — | — | — | NW 12 | NW 12 | NW 11 | NW 11 | NNW 11 | NW 10 | NW 10 | NW 10 | WNW 11 |
| kJ | 20 | 1277 | — | — | — | — | — | — | — | — | 3368 | 2146 | 1419 | 932 | 397 | 377 | 160 | 110 | 99 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 11 | NNW 10 | NNW 10 | NNW 10 | ESE 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 215 | 114 | 102 | 71 | 11 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 32 |
Wind waves Height (m) Direction Period (s) | WNW 12 | SW 4 | WNW 15 | NW 16 | NW 16 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | — | — | — | — | SE 3 | SE 5 | ESE 6 | SE 3 | S 3 |
| kJ | 897 | 58 | 9533 | 19400 | 17481 | 14060 | 12340 | 10288 | 7828 | 5222 | — | — | — | — | 6 | 49 | 94 | 16 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1081 | 411 | 349 | 382 | 1081 | 1034 | 1081 | 1092 | 772 | 380 | 387 | 18 | 0 | 2 | 251 | 194 | 9 | 282 | 390 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
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