Surf Forecasts:
How big are the waves at Castlerock today (28 Jul):
- Afternoon surf: Afternoon surf (28 Jul, local time) - 3ft (0.9m), 10s period with NW swell.
- Evening surf: Evening surf (28 Jul, local time) - 2.5ft (0.8m), 10s period with WNW swell.
The current surf forecast for Castlerock at 12AM is: 0.7m 10s primary swell from a Northwest direction and 0.3m 10s secondary swell from a North-northwest direction (forecast issued at 06:00pm July 27). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Jul) | - | - |
| Afternoon (28 Jul) | 3ft (0.9m) | 10s |
| Evening (28 Jul) | 2.5ft (0.8m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 23mm), heaviest during Mon night. Very mild (max 19°C on Tue morning, min 10°C on Thu morning). Winds increasing (calm on Tue night, strong winds from the NW by Thu morning). | |||||||||||||||||||
Mon 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||||
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 10 | NW 10 | NW 10 | NW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NW 8 | WNW 8 | WNW 8 | NNW 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 142 | 139 | 94 | 90 | 75 | 55 | 55 | 82 | 52 | 52 | 70 | 92 | 68 | 50 | 52 | 58 | 45 | 44 | 90 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | glassy | cross-on | cross | cross-off | on | cross-off |
High Tide | 6:12PM1.55m | 6:18AM1.42m | 6:45PM1.66m | 6:48AM1.49m | 7:16PM1.75m | ||||||||||||||
Low Tide | 00:44AM0.41m | 12:41PM0.27m | 1:18AM0.35m | 1:12PM0.18m | |||||||||||||||
 | |  | | |  | | | | |  |  | | | | |  |  |  | |
 | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — |
 | — | 9:39 | — | — | — | — | — | — | — | 9:38 | — | — | — | — | — | — | — | 9:37 | — |
mm | — | — | 1 | 3 | 3 | 1 | 1 | — | 1 | 1 | — | — | — | 1 | 3 | 2 | 2 | — | — |
Temp °C | 17 | 17 | 16 | 16 | 17 | 18 | 18 | 19 | 19 | 17 | 17 | 16 | 16 | 14 | 14 | 13 | 15 | 15 | 14 |
Feels °C | 16 | 17 | 16 | 16 | 16 | 16 | 15 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 12 | 14 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | NW 10 | NW 10 | NW 10 | NW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NW 8 | WNW 8 | WNW 8 | NNW 10 |
| kJ | 142 | 139 | 94 | 90 | 75 | 55 | 55 | 82 | 52 | 52 | 70 | 92 | 68 | 50 | 52 | 58 | 45 | 44 | 90 |
Swell 2 Height (m) Direction Period (s) | NNW 10 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | N 9 | N 9 | N 9 | N 8 | N 9 | N 9 | N 9 | N 9 | — | NNW 11 | NNW 11 | WNW 8 |
| kJ | 18 | 19 | 19 | 17 | 16 | 8 | 8 | 6 | 6 | 6 | 6 | 6 | 6 | 1 | 1 | — | 25 | 44 | 24 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SE 5 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SW 2 | — | SSW 2 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 9 | 0 | 0 | 0 | 9 | 9 | 9 | 42 | 8 | 0 | 0 | 0 | 8 | 27 | 27 | 0 | 27 | 0 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
Header Global | |||||||||||||||||||
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