Surf Forecasts:
How big are the waves at Castlerock today (22 Oct):
- Morning surf: Morning surf (22 Oct, local time) - 3.5ft (1.1m), 12s period with NW swell.
- Afternoon surf: Afternoon surf (22 Oct, local time) - 3.5ft (1.0m), 12s period with NW swell.
- Evening surf: Evening surf (22 Oct, local time) - 3ft (0.9m), 11s period with NW swell.
The current surf forecast for Castlerock at 3PM is: 1.0m 12s primary swell from a Northwest direction and 0.6m 7s secondary swell from a North-northwest direction (forecast issued at 12:00pm October 22). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Oct) | 3.5ft (1.1m) | 12s |
| Afternoon (22 Oct) | 3.5ft (1.0m) | 12s |
| Evening (22 Oct) | 3ft (0.9m) | 11s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 34mm), heaviest during Sat afternoon. Very mild (max 13°C on Sat afternoon, min 7°C on Thu night). Winds increasing (calm on Thu night, gales from the W by Sat night). | |||||||||||||||||||||
Thu 22 | Friday 23 | Saturday 24 | |||||||||||||||||||
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) | NW 12 | NW 12 | NW 12 | WNW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 13 | NW 12 | NW 13 | NW 13 | NW 13 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | WNW 12 | WNW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 361 | 273 | 268 | 219 | 176 | 172 | 176 | 176 | 851 | 1169 | 1497 | 609 | 1155 | 1135 | 1152 | 1086 | 732 | 519 | 361 | 976 | 3207 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | off | off | off | off | cross-off | cross-off | cross-off |
High Tide | 4:37PM1.60m | 4:53AM1.40m | 5:08PM1.74m | 5:26AM1.54m | 5:40PM1.85m | ||||||||||||||||
Low Tide | 10:22AM0.42m | 11:11PM0.35m | 10:59AM0.31m | 11:41PM0.22m | 11:33AM0.21m | ||||||||||||||||
 |  | |  |  | |  | |  |  | |  | | | | | | | |  | | |
 | 8:08 | — | — | — | — | — | — | 8:11 | — | — | — | — | — | — | — | 8:12 | — | — | — | — | — |
 | — | — | 6:12 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:07 | — | — |
mm | — | — | — | — | — | — | 2 | 5 | 6 | 2 | — | — | — | — | — | — | 1 | 5 | 9 | 1 | — |
Temp °C | 8 | 10 | 10 | 9 | 8 | 9 | 9 | 7 | 7 | 9 | 10 | 9 | 8 | 7 | 8 | 7 | 8 | 11 | 13 | 8 | 10 |
Feels °C | 4 | 6 | 6 | 5 | 4 | 7 | 7 | 1 | -2 | -2 | 0 | 1 | 2 | 2 | 3 | 1 | -2 | 1 | 5 | -4 | -3 |
Swell 1 Height (m) Direction Period (s) | NW 12 | NW 12 | NW 12 | WNW 11 | NW 11 | NW 11 | NW 11 | NW 11 | — | — | — | NW 13 | NW 13 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | WNW 12 | — |
| kJ | 361 | 273 | 268 | 219 | 176 | 172 | 176 | 176 | — | — | — | 609 | 1155 | 1135 | 1152 | 1086 | 732 | 519 | 361 | 976 | — |
Swell 2 Height (m) Direction Period (s) | NNW 8 | NNW 7 | NNW 7 | NNW 6 | NNW 7 | NNW 7 | NNW 6 | NW 14 | — | — | — | — | — | — | — | — | — | — | ESE 6 | SE 5 | — |
| kJ | 54 | 43 | 32 | 16 | 15 | 9 | 4 | 47 | — | — | — | — | — | — | — | — | — | — | 40 | 7 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | E 3 | E 3 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 2 | NW 13 | NW 12 | NW 13 | NW 6 | — | — | — | — | SE 3 | SSE 5 | S 3 | WSW 4 | WNW 13 |
| kJ | — | — | — | — | — | — | — | 2 | 851 | 1169 | 1497 | 181 | — | — | — | — | 12 | 74 | 5 | 58 | 3207 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 0 | 0 | 0 | 0 | 0 | 8 | 74 | 349 | 339 | 339 | 429 | 380 | 9 | 0 | 0 | 270 | 850 | 1034 | 1081 | 707 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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