Surf Forecasts:
How big are the waves at Castlerock today (08 Oct):
- Morning surf: Morning surf (08 Oct, local time) - 5ft (1.5m), 11s period with NW swell.
- Afternoon surf: Afternoon surf (08 Oct, local time) - 3.5ft (1.1m), 11s period with NW swell.
- Evening surf: Evening surf (08 Oct, local time) - 3ft (0.9m), 10s period with NW swell.
The current surf forecast for Castlerock at 3AM is: 1.8m 11s primary swell from a Northwest direction (forecast issued at 12:00am October 08). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Oct) | 5ft (1.5m) | 11s |
| Afternoon (08 Oct) | 3.5ft (1.1m) | 11s |
| Evening (08 Oct) | 3ft (0.9m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 25mm), heaviest during Thu afternoon. Very mild (max 15°C on Thu night, min 8°C on Thu afternoon). Winds increasing (light winds from the W on Wed night, strong winds from the WNW by Fri night). | ||||||||||||||||||||||||
Thursday 8 | Friday 9 | Saturday 10 | ||||||||||||||||||||||
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) | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | WNW 9 | WNW 9 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 10 | NW 11 | NW 12 | NW 12 | NW 12 | NW 13 | NW 12 | NW 12 | NW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 952 | 836 | 579 | 422 | 371 | 254 | 187 | 117 | 254 | 336 | 358 | 434 | 523 | 658 | 735 | 944 | 1652 | 2389 | 2693 | 2789 | 2746 | 2700 | 2386 | 2027 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross-on |
High Tide | 5:18AM1.47m | 5:37PM1.91m | 5:53AM1.59m | 6:11PM1.96m | 6:26AM1.68m | 6:43PM1.95m | ||||||||||||||||||
Low Tide | 11:39PM0.21m | 11:25AM0.18m | 00:13AM0.13m | 12:02PM0.08m | 00:42AM0.08m | 12:36PM0.04m | ||||||||||||||||||
 |  |  |  |  |  |  | | |  | | |  |  | | | | | | | | | | | |
 | — | — | 7:41 | — | — | — | — | — | — | — | 7:43 | — | — | — | — | — | — | — | 7:45 | — | — | — | — | — |
 | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:40 | — | — |
mm | — | — | — | — | — | 4 | 5 | 2 | 3 | 2 | 4 | — | — | 1 | — | — | 1 | — | — | 1 | 1 | — | — | — |
Temp °C | 11 | 10 | 10 | 10 | 10 | 8 | 11 | 13 | 15 | 15 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 11 | 11 | 11 |
Feels °C | 5 | 5 | 6 | 7 | 5 | 2 | 5 | 10 | 9 | 11 | 6 | 5 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 4 |
Swell 1 Height (m) Direction Period (s) | — | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | SE 4 | WNW 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 12 |
| kJ | — | 836 | 579 | 422 | 371 | 254 | 187 | 117 | 1 | 336 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2027 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 3 | — | NW 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 3 | — | 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 11 | — | — | — | — | SSE 2 | SSE 3 | SW 2 | WNW 9 | — | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 10 | NW 11 | NW 12 | NW 12 | NW 12 | NW 13 | NW 12 | NW 12 | — |
| kJ | 952 | — | — | — | — | 1 | 3 | 1 | 254 | — | 358 | 434 | 523 | 658 | 735 | 944 | 1652 | 2389 | 2693 | 2789 | 2746 | 2700 | 2386 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 349 | 187 | 27 | 0 | 9 | 292 | 305 | 9 | 405 | 323 | 408 | 341 | 968 | 1035 | 1092 | 772 | 839 | 380 | 587 | 771 | 772 | 772 | 387 | 387 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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