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 NW swell.
- Evening surf: Evening surf (29 Jul, local time) - 2ft (0.6m), 8s period with WNW swell.
The current surf forecast for Castlerock at 12PM is: 0.6m 8s primary swell from a Northwest direction and 0.1m 8s secondary swell from a North direction (forecast issued at 06:00am July 29). 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 10mm), heaviest on Wed afternoon. Very mild (max 16°C on Fri afternoon, min 10°C on Thu night). Winds increasing (calm on Wed morning, fresh winds from the WNW by Thu morning). | |||||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||||||||
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) | WNW 9 | WNW 8 | WNW 9 | NW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 6 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 6 | NNW 6 | NW 6 | NW 6 | WNW 7 | WNW 7 | WNW 7 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 49 | 48 | 49 | 55 | 45 | 44 | 42 | 39 | 32 | 37 | 49 | 147 | 200 | 134 | 96 | 67 | 42 | 22 | 18 | 9 | 15 | 18 | 18 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-off | glassy | glassy | glassy | off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross |
High Tide | 6:48AM1.49m | 7:16PM1.75m | 7:17AM1.54m | 7:47PM1.82m | 7:47AM1.57m | 8:17PM1.85m | |||||||||||||||||
Low Tide | 1:18AM0.35m | 1:12PM0.18m | 1:50AM0.31m | 1:41PM0.12m | 2:20AM0.29m | 2:09PM0.09m | |||||||||||||||||
 |  | |  |  | |  | | | |  | | | | | | |  | | | | | | |
 | 5:28 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | — | — | — | 9:37 | — | — | — | — | — | — | — | 9:35 | — | — | — | — | — | — | — | 9:32 | — |
mm | — | — | — | 1 | 7 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 15 | 15 | 15 | 14 | 13 | 13 | 14 | 12 | 11 | 11 | 13 | 15 | 15 | 15 | 13 | 11 | 11 | 10 | 14 | 15 | 16 | 15 | 13 |
Feels °C | 15 | 15 | 14 | 14 | 13 | 12 | 13 | 10 | 8 | 8 | 8 | 9 | 9 | 11 | 11 | 8 | 8 | 7 | 10 | 11 | 12 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 8 | WNW 9 | NW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | NNW 8 | — | — | NW 7 | NW 7 | NW 7 | NW 6 | NNW 6 | NW 6 | NW 6 | NNW 6 | WNW 7 | WNW 7 |
| kJ | 49 | 48 | 49 | 55 | 45 | 44 | 42 | 39 | 32 | 37 | 14 | — | — | 134 | 96 | 67 | 42 | 22 | 18 | 9 | 7 | 18 | 18 |
Swell 2 Height (m) Direction Period (s) | N 9 | N 9 | N 8 | N 8 | N 11 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | — | — | — | — | — | — | — | WNW 6 | W 7 | WNW 7 | N 8 | NNW 8 | NNW 8 |
| kJ | 6 | 1 | 1 | 1 | 2 | 10 | 17 | 27 | 26 | 24 | — | — | — | — | — | — | — | 6 | 1 | 9 | 1 | 13 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 7 | W 7 | N 8 | — | — | N 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 5 | — | — | 1 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | WNW 6 | NW 8 | NW 8 | — | — | — | — | — | — | — | WNW 7 | WNW 3 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 49 | 147 | 200 | — | — | — | — | — | — | — | 15 | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 42 | 14 | 8 | 8 | 14 | 8 | 8 | 0 | 8 | 0 | 400 | 400 | 772 | 833 | 0 | 0 | 14 | 42 | 42 | 42 | 42 | 2350 | 42 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||||
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