Surf Forecasts:
How big are the waves at Castlerock today (15 Nov):
- Morning surf: Morning surf (15 Nov, local time) - 4.5ft (1.3m), 10s period with NNW swell.
- Afternoon surf: Afternoon surf (15 Nov, local time) - 8ft (2.5m), 8s period with NNW swell.
- Evening surf: Evening surf (15 Nov, local time) - 7.5ft (2.3m), 9s period with NNW swell.
The current surf forecast for Castlerock at 10AM is: 1.4m 10s primary swell from a North-northwest direction and 0.6m 15s secondary swell from a North direction, 0.1m 12s secondary swell from a West direction (forecast issued at 05:00am November 15). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Nov) | 4.5ft (1.3m) | 10s |
| Afternoon (15 Nov) | 8ft (2.5m) | 8s |
| Evening (15 Nov) | 7.5ft (2.3m) | 9s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 31mm), heaviest during Mon night. Mild temperatures (max 9°C on Sun morning, min 4°C on Mon night). Winds increasing (light winds from the NNE on Mon morning, near gales from the ESE by Mon night). | ||||||||||||||||||||||||||
Sunday 15 | Monday 16 | Tuesday 17 | Wed 18 | |||||||||||||||||||||||
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 | 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 | NNW 9 | NNW 10 | NNW 9 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | N 12 | N 12 | N 11 | NNW 11 | NNW 11 | N 10 | W 12 | W 12 | WNW 14 | WNW 14 | ENE 6 | WNW 15 |
Wave Graph  | ||||||||||||||||||||||||||
 kJ | 83 | 106 | 332 | 333 | 899 | 840 | 859 | 878 | 606 | 335 | 232 | 137 | 92 | 55 | 25 | 12 | 10 | 11 | 11 | 8 | 3 | 12 | 41 | 79 | 143 | 167 |
Wind (km/h) | ||||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | on | on | on | cross-on | cross-on | on | on | on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross |
High Tide | 9:05AM1.42m | 9:02PM1.17m | 10:02AM1.33m | 9:56PM1.08m | 11:19AM1.29m | 11:26PM1.02m | ||||||||||||||||||||
Low Tide | 2:43AM0.47m | 3:57PM0.68m | 3:34AM0.54m | 5:11PM0.74m | 4:44AM0.60m | 6:34PM0.73m | ||||||||||||||||||||
 | |  |  | |  | | |  | |  | |  | | | |  | | | | | | | | | | |
 | — | 7:58 | — | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 8:02 | — | — | — | — | — | — | — | 8:03 |
 | — | — | — | — | 4:22 | — | — | — | — | — | — | — | 4:22 | — | — | — | — | — | — | — | 4:20 | — | — | — | — | 4:19 |
mm | 1 | 1 | 3 | — | — | — | — | 1 | — | — | — | — | — | — | — | 2 | 6 | 1 | 4 | 2 | 4 | 4 | 3 | 1 | — | — |
Temp °C | 9 | 9 | 9 | 8 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 6 | 5 | 6 | 4 | 4 | 5 | 6 | 5 | 6 | 7 | 8 | 8 | 8 | 7 |
Feels °C | 5 | 7 | 3 | -1 | -4 | -4 | -4 | -4 | -2 | -2 | 1 | 1 | 0 | -4 | -4 | -7 | -8 | -5 | -3 | -2 | 1 | 2 | 5 | 5 | 5 | 2 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NNW 9 | N 16 | N 15 | NNW 15 | N 14 | — | — | W 10 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 11 | NNW 11 | N 10 | N 10 | W 12 | WNW 14 | WNW 14 | WNW 14 | WNW 15 |
| kJ | 83 | 106 | 174 | 209 | 42 | 101 | — | — | 2 | 335 | 232 | 137 | 92 | 55 | 23 | 12 | 7 | 11 | 11 | 8 | 2 | 12 | 41 | 79 | 118 | 167 |
Swell 2 Height (m) Direction Period (s) | W 9 | NNW 16 | W 12 | W 12 | — | — | — | — | — | NNW 13 | N 13 | NNW 13 | NNW 13 | NNW 12 | N 12 | N 12 | N 11 | — | — | W 13 | W 12 | N 10 | N 10 | N 9 | N 9 | N 9 |
| kJ | 1 | 53 | 3 | 3 | — | — | — | — | — | 33 | 30 | 33 | 33 | 31 | 25 | 11 | 10 | — | — | 3 | 3 | 2 | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | N 18 | SSE 3 | — | — | — | — | — | — | — | W 10 | WNW 10 | W 10 | W 10 | W 10 | W 10 | W 10 | — | — | — | — | — | — | — | — | — | — |
| kJ | 7 | 1 | — | — | — | — | — | — | — | 8 | 11 | 8 | 8 | 2 | 2 | 2 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | NNW 3 | NNW 10 | NNW 9 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | — | — | — | — | E 3 | E 5 | ESE 6 | E 7 | E 7 | E 6 | E 6 | E 7 | E 7 | E 6 | ENE 6 | ENE 6 | ENE 6 |
| kJ | 3 | 1 | 332 | 333 | 899 | 840 | 859 | 878 | 606 | — | — | — | — | 5 | 61 | 266 | 521 | 384 | 321 | 284 | 349 | 360 | 247 | 155 | 143 | 100 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||||
Distance (km) | 0 | 9 | 254 | 309 | 309 | 341 | 300 | 300 | 144 | 114 | 9 | 0 | 2 | 328 | 385 | 436 | 442 | 150 | 101 | 91 | 40 | 40 | 16 | 0 | 0 | 40 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||||
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