Surf Forecasts:
How big are the waves at Castlerock today (29 Jul):
- Morning surf: Morning surf (29 Jul, local time) - 2ft (0.6m), 8s period with WNW swell.
- Afternoon surf: Afternoon surf (29 Jul, local time) - 2ft (0.6m), 8s period with WNW swell.
- Evening surf: Evening surf (29 Jul, local time) - 2ft (0.6m), 8s period with WNW swell.
The current surf forecast for Castlerock at 12AM is: 0.7m 9s primary swell from a West-northwest direction and 0.2m 9s secondary swell from a North direction (forecast issued at 06:00pm July 28). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Jul) | 2ft (0.6m) | 8s |
| Afternoon (29 Jul) | 2ft (0.6m) | 8s |
| Evening (29 Jul) | 2ft (0.6m) | 8s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 14mm), heaviest on Wed morning. Very mild (max 18°C on Tue afternoon, min 11°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the WNW by Thu morning). | |||||||||||||||||||
Tue 28 | Wednesday 29 | Thursday 30 | |||||||||||||||||
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) | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | NW 8 | WNW 8 | WNW 8 | WNW 8 | NW 8 | NNW 9 | NNW 9 | NW 6 | NW 7 | NW 7 | NW 6 | NW 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 61 | 61 | 70 | 70 | 49 | 48 | 48 | 55 | 45 | 44 | 41 | 28 | 26 | 25 | 71 | 116 | 124 | 62 | 33 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | glassy | glassy | glassy | off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross | cross | cross-off |
High Tide | 6:45PM1.66m | 6:48AM1.49m | 7:16PM1.75m | 7:17AM1.54m | 7:47PM1.82m | ||||||||||||||
Low Tide | 1:18AM0.35m | 1:12PM0.18m | 1:50AM0.31m | 1:41PM0.12m | |||||||||||||||
 | |  |  | | | | |  |  |  | | | |  |  | | | | |
 | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — |
 | — | 9:38 | — | — | — | — | — | — | — | 9:37 | — | — | — | — | — | — | — | 9:35 | — |
mm | 2 | 2 | 1 | — | — | 1 | 2 | 4 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 16 | 16 | 14 | 14 | 13 | 13 | 15 | 16 | 14 | 12 | 11 | 12 | 13 | 14 | 14 | 14 | 13 |
Feels °C | 17 | 16 | 14 | 15 | 14 | 15 | 13 | 13 | 14 | 15 | 12 | 10 | 8 | 7 | 6 | 8 | 7 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | NW 8 | WNW 8 | WNW 8 | WNW 8 | NW 8 | WNW 8 | NNW 9 | NNW 8 | N 8 | — | WNW 7 | NW 6 |
| kJ | 61 | 61 | 70 | 70 | 49 | 48 | 48 | 55 | 45 | 44 | 41 | 28 | 22 | 25 | 14 | 5 | — | 5 | 33 |
Swell 2 Height (m) Direction Period (s) | N 9 | N 9 | N 8 | N 9 | N 9 | N 9 | N 8 | N 8 | NNW 11 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | WNW 8 | — | — | — | — | WNW 7 |
| kJ | 6 | 6 | 6 | 6 | 6 | 1 | 1 | 1 | 11 | 19 | 28 | 26 | 26 | 22 | — | — | — | — | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 2 | NW 6 | NW 7 | NW 7 | NW 6 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 71 | 116 | 124 | 62 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 9 | 0 | 0 | 0 | 8 | 14 | 14 | 8 | 8 | 54 | 0 | 8 | 16 | 334 | 349 | 382 | 414 | 54 | 42 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
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