Surf Forecasts:
How big are the waves at Castlerock today (26 Oct):
- Morning surf: Morning surf (26 Oct, local time) - 4.5ft (1.3m), 11s period with NNW swell.
- Afternoon surf: Afternoon surf (26 Oct, local time) - 3ft (0.9m), 10s period with NNW swell.
- Evening surf: Evening surf (26 Oct, local time) - 2ft (0.6m), 11s period with WNW swell.
The current surf forecast for Castlerock at 11AM is: 1.4m 10s primary swell from a Northwest direction and 0.9m 11s secondary swell from a West-northwest direction (forecast issued at 05:00am October 26). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 Oct) | 4.5ft (1.3m) | 11s |
| Afternoon (26 Oct) | 3ft (0.9m) | 10s |
| Evening (26 Oct) | 2ft (0.6m) | 11s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 23mm), heaviest during Mon morning. Very mild (max 16°C on Mon afternoon, min 9°C on Mon night). Winds decreasing (strong winds from the SW on Mon night, light winds from the SSE by Wed afternoon). | |||||||||||||||||||||||
Monday 26 | Tuesday 27 | Wednesday 28 | |||||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NW 11 | NW 11 | NNW 11 | NW 10 | NNW 10 | NW 10 | WNW 11 | NW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 14 | WNW 14 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 1395 | 932 | 397 | 377 | 154 | 110 | 75 | 144 | 180 | 256 | 703 | 2121 | 3167 | 4635 | 4274 | 3228 | 2354 | 1892 | 1381 | 1149 | 846 | 683 | 564 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | 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 |
High Tide | 5:34AM1.76m | 5:50PM1.95m | 6:10AM1.82m | 6:28PM1.90m | 6:48AM1.84m | 7:08PM1.79m | |||||||||||||||||
Low Tide | 11:43AM0.07m | 00:11AM0.05m | 12:21PM0.06m | 00:44AM0.08m | 1:02PM0.09m | ||||||||||||||||||
 | |  | | |  | | |  | |  |  | | | | | | | |  | |  | | |
 | — | 7:16 | — | — | — | — | — | — | — | 7:18 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — |
 | — | — | — | — | 5:02 | — | — | — | — | — | — | — | 5:00 | — | — | — | — | — | — | — | 4:59 | — | — |
mm | — | — | 1 | 5 | 2 | 1 | 1 | 5 | — | — | 3 | — | 1 | — | — | — | 1 | 3 | — | — | — | — | — |
Temp °C | 9 | 8 | 10 | 13 | 16 | 16 | 15 | 14 | 10 | 9 | 10 | 10 | 10 | 9 | 10 | 10 | 12 | 13 | 13 | 14 | 14 | 13 | 12 |
Feels °C | 5 | 3 | 2 | 7 | 13 | 12 | 10 | 6 | 1 | -1 | 1 | 1 | 2 | 2 | 3 | 3 | 5 | 6 | 8 | 10 | 11 | 10 | 9 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 11 | NNW 11 | NW 10 | ESE 6 | NW 10 | WNW 11 | NW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 14 | WNW 14 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 |
| kJ | 1395 | 932 | 397 | 377 | 56 | 110 | 75 | 144 | 180 | 256 | 703 | 2121 | 3167 | 4635 | 4274 | 3228 | 2354 | 1892 | 1381 | 1149 | 846 | 683 | 564 |
Swell 2 Height (m) Direction Period (s) | — | — | WNW 11 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | ESE 8 | NNW 8 | SE 4 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 215 | 157 | 154 | 78 | 47 | 26 | 22 | 7 | 4 | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | NW 11 | — | NNW 13 | — | NNW 8 | SE 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 121 | — | 17 | — | 14 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SE 3 | SE 4 | — | SE 3 | SE 4 | SE 4 | SSW 3 | S 4 | WSW 4 | W 4 | — | — | WSW 3 | SW 3 | SSW 3 | SW 3 | WSW 3 | — | SW 3 | — | — |
| kJ | — | — | 6 | 36 | — | 10 | 15 | 12 | 5 | 16 | 20 | 42 | — | — | 8 | 7 | 7 | 5 | 7 | — | 2 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 0 | 2 | 340 | 340 | 0 | 282 | 390 | 390 | 1057 | 780 | 1088 | 685 | 1115 | 772 | 559 | 559 | 559 | 387 | 387 | 9 | 9 | 0 | 0 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||||
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