Surf Forecasts:
How big are the waves at Castlerock today (13 Oct):
- Morning surf: Morning surf (13 Oct, local time) - 2ft (0.6m), 8s period with WNW swell.
- Afternoon surf: Afternoon surf (13 Oct, local time) - 5ft (1.6m), 9s period with WNW swell.
- Evening surf: Evening surf (13 Oct, local time) - 5ft (1.6m), 12s period with NW swell.
The current surf forecast for Castlerock at 7AM is: 1.0m 9s primary swell from a West direction (forecast issued at 12:00am October 13). An open ocean swell of 0.4m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Oct) | 2ft (0.6m) | 8s |
| Afternoon (13 Oct) | 5ft (1.6m) | 9s |
| Evening (13 Oct) | 5ft (1.6m) | 12s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 35mm), heaviest during Wed night. Very mild (max 18°C on Mon night, min 9°C on Tue night). Mainly strong winds. | ||||||||||||||||||||||||
Tuesday 13 | Wednesday 14 | Thursday 15 | ||||||||||||||||||||||
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 | 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 11 | W 9 | WNW 8 | W 9 | WNW 9 | WNW 10 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 13 | WNW 13 | WNW 14 | NW 16 | NW 16 | NW 15 | NW 14 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 14 | 12 | 146 | 51 | 215 | 464 | 434 | 772 | 700 | 455 | 355 | 398 | 382 | 458 | 1057 | 1571 | 1852 | 1609 | 1187 | 1150 | 1423 | 1729 | 1561 | 1374 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | off | off | off | off | off | off | off | off | glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 7:56AM1.74m | 8:12PM1.66m | 8:26AM1.68m | 8:40PM1.51m | 8:57AM1.59m | 9:08PM1.37m | ||||||||||||||||||
Low Tide | 2:00AM0.17m | 2:15PM0.17m | 2:24AM0.25m | 2:48PM0.29m | 2:49AM0.35m | 3:23PM0.43m | ||||||||||||||||||
 |  |  |  |  |  |  | | | | | | | |  | |  | | |  | | | | | |
 | — | — | 7:50 | — | — | — | — | — | — | — | 7:52 | — | — | — | — | — | — | — | 7:54 | — | — | — | — | — |
 | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:29 | — | — |
mm | — | 6 | — | — | 1 | — | — | — | — | — | — | — | — | — | 1 | 4 | 6 | 7 | 7 | 3 | — | — | — | — |
Temp °C | 18 | 14 | 13 | 12 | 13 | 12 | 12 | 11 | 10 | 9 | 10 | 13 | 15 | 16 | 15 | 14 | 14 | 12 | 11 | 11 | 12 | 12 | 11 | 10 |
Feels °C | 14 | 8 | 7 | 5 | 5 | 3 | 6 | 7 | 5 | 4 | 4 | 7 | 7 | 8 | 8 | 13 | 14 | 11 | 9 | 7 | 7 | 7 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | WNW 12 | SE 4 | SE 4 | WNW 8 | — | NW 14 | WNW 10 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 13 | WNW 13 | WNW 14 | NW 16 | NW 16 | NW 15 | NW 14 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 |
| kJ | 14 | 5 | 4 | 51 | — | 66 | 434 | 772 | 700 | 455 | 355 | 398 | 382 | 458 | 1057 | 1571 | 1852 | 1609 | 1187 | 1150 | 1423 | 1729 | 1561 | 1374 |
Swell 2 Height (m) Direction Period (s) | W 9 | W 9 | — | SE 4 | — | — | NW 13 | NW 12 | — | — | NW 15 | — | — | — | — | S 4 | — | — | — | — | — | — | — | — |
| kJ | 2 | 6 | — | 1 | — | — | 166 | 306 | — | — | 37 | — | — | — | — | 8 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | N 7 | WNW 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 3 | WSW 3 | W 9 | W 4 | W 9 | WNW 9 | — | — | SSW 2 | S 2 | SSE 3 | SSE 3 | SSE 4 | S 4 | S 4 | — | — | — | — | — | WSW 3 | — | — | — |
| kJ | 6 | 5 | 146 | 12 | 215 | 464 | — | — | 1 | 1 | 3 | 9 | 19 | 14 | 10 | — | — | — | — | — | 3 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 287 | 707 | 433 | 341 | 772 | 772 | 347 | 9 | 0 | 0 | 348 | 629 | 688 | 690 | 492 | 0 | 0 | 67 | 9 | 27 | 9 | 254 | 9 | 9 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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