Surf Forecasts:
How big are the waves at Castlerock today (29 Aug):
- Morning surf: Morning surf (29 Aug, local time) - 1.5ft (0.5m), 6s period with NNW swell.
- Afternoon surf: Afternoon surf (29 Aug, local time) - 1.5ft (0.5m), 6s period with NNW swell.
- Evening surf: Evening surf (29 Aug, local time) - 1.5ft (0.4m), 6s period with NNW swell.
The current surf forecast for Castlerock at 8AM is: 0.5m 6s primary swell from a North-northwest direction (forecast issued at 12:00am August 29). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Aug) | 1.5ft (0.5m) | 6s |
| Afternoon (29 Aug) | 1.5ft (0.5m) | 6s |
| Evening (29 Aug) | 1.5ft (0.4m) | 6s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Sun afternoon. Very mild (max 16°C on Sat morning, min 13°C on Fri night). Winds increasing (calm on Sat morning, fresh winds from the WNW by Sun night). | ||||||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||||||||||
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) | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | W 9 | NW 4 | NW 5 | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 27 | 30 | 25 | 21 | 21 | 23 | 16 | 16 | 15 | 13 | 11 | 12 | 8 | 8 | 8 | 3 | 6 | 17 | 55 | 58 | 66 | 63 | 65 | 57 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | glassy | on | on | on | cross-on | glassy | off | cross-off | cross-off | off | cross-off | on | cross-on | cross | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off |
High Tide | 7:24AM1.66m | 7:47PM1.96m | 7:55AM1.69m | 8:18PM1.95m | 8:27AM1.68m | 8:50PM1.89m | ||||||||||||||||||
Low Tide | 1:49AM0.17m | 1:39PM0.03m | 2:16AM0.15m | 2:06PM0.03m | 2:42AM0.17m | 2:34PM0.08m | ||||||||||||||||||
 |  |  | | | | |  | |  |  | |  | | | | | |  | | | | | | |
 | — | 6:26 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:28 | — | — | — | — | — | — | — | 8:25 | — | — | — | — | — | — | — | 8:22 | — |
mm | — | — | — | — | — | — | — | 1 | — | 1 | 1 | 1 | 1 | 3 | 1 | — | — | 1 | — | — | — | — | — | — |
Temp °C | 14 | 13 | 14 | 15 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 15 | 15 | 16 | 14 |
Feels °C | 12 | 12 | 14 | 15 | 16 | 15 | 14 | 13 | 14 | 14 | 13 | 12 | 13 | 15 | 14 | 12 | 12 | 7 | 7 | 8 | 11 | 12 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | W 11 | W 11 | W 11 | NW 6 | NW 7 | NW 7 | NW 7 |
| kJ | 27 | 30 | 25 | 21 | 21 | 23 | 16 | 16 | 15 | 13 | 11 | 12 | 8 | 8 | 8 | 3 | 3 | 2 | 2 | 2 | 66 | 63 | 65 | 57 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 7 | — | — | NW 6 | W 8 | W 11 | W 10 | W 10 | W 9 | W 9 | — | — | — | W 11 | W 10 | W 10 | W 10 |
| kJ | — | — | — | — | — | — | — | 2 | — | — | 2 | 1 | 2 | 2 | 2 | 2 | 6 | — | — | — | 2 | 2 | 8 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 9 | W 9 | W 8 | W 8 | W 8 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 2 | 2 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 4 | NW 5 | NW 6 | — | WSW 3 | — | SW 2 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 17 | 55 | 58 | — | 1 | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 42 | 42 | 40 | 97 | 321 | 334 | 331 | 254 | 180 | 91 | 40 | 40 | 40 | 40 | 40 | 42 | 158 | 340 | 380 | 380 | 71 | 9 | 9 | 8 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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