Surf Forecasts:
How big are the waves at Castlerock today (07 Aug):
- Morning surf: Morning surf (07 Aug, local time) - 2.5ft (0.7m), 8s period with WNW swell.
- Afternoon surf: Afternoon surf (07 Aug, local time) - 4ft (1.2m), 10s period with NW swell.
- Evening surf: Evening surf (07 Aug, local time) - 4.5ft (1.3m), 10s period with WNW swell.
The current surf forecast for Castlerock at 4AM is: 0.4m 5s primary swell from a Northwest direction and 0.1m 9s secondary swell from a Northwest direction (forecast issued at 12:00am August 07). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 Aug) | 2.5ft (0.7m) | 8s |
| Afternoon (07 Aug) | 4ft (1.2m) | 10s |
| Evening (07 Aug) | 4.5ft (1.3m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Sat night. Very mild (max 18°C on Fri afternoon, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||||||||||
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 5 | NW 5 | WNW 5 | WNW 8 | NW 9 | NW 10 | NW 10 | WNW 10 | WNW 10 | NW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 6 | 7 | 11 | 54 | 186 | 309 | 356 | 327 | 256 | 220 | 164 | 161 | 117 | 117 | 115 | 120 | 113 | 106 | 106 | 120 | 128 | 138 | 118 | 112 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross | cross-on | cross |
High Tide | 00:27AM1.37m | 1:17PM1.21m | 2:09AM1.28m | 3:06PM1.28m | 3:46AM1.32m | 4:25PM1.45m | ||||||||||||||||||
Low Tide | 7:03AM0.58m | 7:32PM0.61m | 8:43AM0.59m | 9:35PM0.57m | 10:14AM0.50m | |||||||||||||||||||
 | |  |  |  | | |  | | | | |  | | |  | |  | | | | | | | |
 | — | 5:43 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:19 | — | — | — | — | — | — | — | 9:16 | — | — | — | — | — | — | — | 9:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | 1 | 2 | 2 | 1 | — | — | — |
Temp °C | 14 | 12 | 12 | 14 | 17 | 18 | 17 | 15 | 13 | 13 | 13 | 14 | 15 | 16 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 15 | 15 | 14 |
Feels °C | 12 | 9 | 9 | 9 | 13 | 15 | 14 | 13 | 10 | 10 | 10 | 10 | 10 | 12 | 15 | 15 | 12 | 11 | 12 | 11 | 11 | 13 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | NW 5 | NW 5 | WNW 5 | WNW 8 | NW 9 | NW 10 | NW 10 | WNW 10 | WNW 10 | NW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 |
| kJ | 6 | 7 | 11 | 54 | 186 | 309 | 356 | 327 | 256 | 220 | 164 | 161 | 117 | 117 | 115 | 120 | 113 | 106 | 106 | 120 | 128 | 138 | 118 | 112 |
Swell 2 Height (m) Direction Period (s) | NNW 6 | NW 9 | NW 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 9 | — | — | — | — | — | — |
| kJ | 3 | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | NW 10 | W 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SW 2 | SW 2 | SW 3 | WSW 3 | W 3 | — | — | — | — | — | — | S 2 | S 3 | S 3 | S 3 | — | — | — | — | — | — | — | — |
| kJ | — | 1 | 1 | 2 | 3 | 5 | — | — | — | — | — | — | 1 | 2 | 2 | 1 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 184 | 155 | 122 | 323 | 9 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 25 | 0 | 0 | 9 | 9 | 0 | 9 | 9 | 9 | 27 | 9 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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