Surf Forecasts:
How big are the waves at Castlerock today (06 Aug):
- Morning surf: Morning surf (06 Aug, local time) - 3.5ft (1.1m), 6s period with NNW swell.
- Afternoon surf: Afternoon surf (06 Aug, local time) - 2.5ft (0.7m), 6s period with NNW swell.
- Evening surf: Evening surf (06 Aug, local time) - 1.5ft (0.4m), 6s period with NNW swell.
The current surf forecast for Castlerock at 12AM is: 1.8m 8s primary swell from a North-northwest direction (forecast issued at 06:00pm August 05). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Aug) | 3.5ft (1.1m) | 6s |
| Afternoon (06 Aug) | 2.5ft (0.7m) | 6s |
| Evening (06 Aug) | 1.5ft (0.4m) | 6s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Wed afternoon. Very mild (max 18°C on Fri afternoon, min 12°C on Wed afternoon). Winds decreasing (fresh winds from the WNW on Wed afternoon, light winds from the SW by Thu afternoon). | |||||||||||||||||||
Wed 5 | Thursday 6 | Friday 7 | |||||||||||||||||
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) | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NW 5 | NW 5 | NW 5 | NW 9 | NW 8 | WNW 9 | WNW 10 | NW 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 771 | 651 | 521 | 310 | 208 | 142 | 78 | 47 | 30 | 18 | 6 | 6 | 9 | 7 | 19 | 100 | 231 | 314 | 275 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:20PM1.51m | 11:47AM1.27m | 00:27AM1.37m | 1:17PM1.21m | |||||||||||||||
Low Tide | 4:51PM0.41m | 5:49AM0.51m | 5:54PM0.53m | 7:03AM0.58m | 7:32PM0.61m | ||||||||||||||
 | |  |  |  |  |  | | | | | | | | | | | | | |
 | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — |
 | — | 9:22 | — | — | — | — | — | — | — | 9:21 | — | — | — | — | — | — | — | 9:19 | — |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 12 | 13 | 13 | 12 | 12 | 14 | 15 | 16 | 16 | 15 | 14 | 12 | 12 | 14 | 17 | 18 | 17 | 15 |
Feels °C | 7 | 5 | 7 | 8 | 7 | 8 | 11 | 12 | 13 | 14 | 13 | 11 | 9 | 9 | 10 | 13 | 15 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | W 10 | NNW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NW 5 | NW 5 | NW 5 | WNW 6 | NW 8 | WNW 9 | WNW 10 | NW 10 |
| kJ | — | — | — | — | 2 | 142 | 78 | 47 | 30 | 18 | 6 | 6 | 9 | 7 | 17 | 100 | 231 | 314 | 275 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 10 | W 10 | W 10 | W 10 | W 10 | WNW 5 | NNW 6 | NW 9 | NW 9 | NW 9 | — | — | — | — |
| kJ | — | — | — | — | — | 2 | 2 | 2 | 2 | 2 | 2 | 6 | 3 | 3 | 19 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 10 | NW 10 | W 10 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 2 | 4 | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 7 | — | — | — | — | — | — | — | — | — | SW 2 | WSW 3 | — | — | — |
| kJ | 771 | 651 | 521 | 310 | 208 | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 366 | 772 | 629 | 187 | 187 | 52 | 71 | 172 | 282 | 42 | 184 | 172 | 172 | 155 | 187 | 9 | 9 | 0 | 9 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
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