Surf Forecasts:
How big are the waves at Castlerock today (11 Nov):
- Morning surf: Morning surf (11 Nov, local time) - 0.5ft (0.2m), 9s period with WNW swell.
- Afternoon surf: Afternoon surf (11 Nov, local time) - 2.5ft (0.7m), 5s period with NNW swell.
- Evening surf: Evening surf (11 Nov, local time) - 3.5ft (1.0m), 5s period with NNW swell.
The current surf forecast for Castlerock at 4AM is: 0.3m 9s primary swell from a Northwest direction and 0.1m 15s secondary swell from a West direction, 0.2m 3s secondary swell from a North-northeast direction (forecast issued at 11:00pm November 10). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Nov) | 0.5ft (0.2m) | 9s |
| Afternoon (11 Nov) | 2.5ft (0.7m) | 5s |
| Evening (11 Nov) | 3.5ft (1.0m) | 5s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 10°C on Wed night, min 7°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the N by Wed night). | ||||||||||||||||||||
Wednesday 11 | Thursday 12 | Fri 13 | ||||||||||||||||||
9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | |
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | NW 9 | NW 9 | NW 9 | NW 9 | WNW 9 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | N 6 | N 6 | N 7 | NNW 7 | NNW 7 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 12 | 12 | 12 | 12 | 8 | 11 | 25 | 40 | 56 | 127 | 173 | 206 | 191 | 193 | 186 | 237 | 260 | 211 | 143 | 108 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | glassy | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross | cross |
High Tide | 6:19PM1.63m | 6:37AM1.73m | 6:49PM1.55m | 7:09AM1.69m | 7:19PM1.46m | |||||||||||||||
Low Tide | 00:33AM0.21m | 1:02PM0.26m | 1:02AM0.26m | 1:38PM0.35m | 1:32AM0.32m | |||||||||||||||
 |  |  | |  |  | | | | | | | | |  | | | | | | |
 | — | — | — | 7:50 | — | — | — | — | — | — | — | 7:52 | — | — | — | — | — | — | — | 7:54 |
 | — | — | — | — | — | — | 4:30 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | 4:27 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 8 | 7 | 7 | 7 | 7 | 9 | 9 | 8 | 10 | 8 | 7 | 7 | 7 | 9 | 9 | 8 | 8 | 8 | 7 | 7 |
Feels °C | 4 | 4 | 5 | 4 | 4 | 4 | 3 | 2 | 2 | -1 | -2 | -1 | 0 | 3 | 2 | 2 | 3 | 3 | 2 | 3 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 9 | NW 9 | NW 9 | NNW 6 | N 8 | NW 8 | NW 8 | NW 8 | — | — | — | — | N 14 | NNW 13 | NNW 12 | NNW 9 | NNW 9 | NNW 9 | NNW 9 |
| kJ | 12 | 12 | 12 | 12 | 8 | 5 | 3 | 2 | 2 | — | — | — | — | 14 | 33 | 52 | 260 | 211 | 143 | 108 |
Swell 2 Height (m) Direction Period (s) | — | — | W 15 | N 3 | WNW 9 | NW 8 | N 8 | — | — | — | — | — | — | — | — | — | NNW 12 | — | — | — |
| kJ | — | — | 5 | 1 | 7 | 3 | 5 | — | — | — | — | — | — | — | — | — | 30 | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 16 | W 16 | — | — | E 3 | — | N 8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 5 | 5 | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NNE 3 | — | — | NNW 5 | NNW 5 | NNW 5 | NNW 5 | N 6 | N 6 | N 7 | NNW 7 | NNW 7 | NNW 8 | NNW 9 | — | — | — | — |
| kJ | — | — | 1 | — | — | 11 | 25 | 40 | 56 | 127 | 173 | 206 | 191 | 193 | 186 | 237 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 40 | 40 | 40 | 40 | 41 | 180 | 180 | 253 | 260 | 297 | 303 | 336 | 131 | 131 | 151 | 107 | 107 | 107 | 9 | 9 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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