Surf Forecasts:
How big are the waves at Castlerock today (01 Sep):
- Morning surf: Morning surf (01 Sep, local time) - 1.5ft (0.5m), 8s period with WNW swell.
- Afternoon surf: Afternoon surf (01 Sep, local time) - 2.5ft (0.8m), 9s period with WNW swell.
- Evening surf: Evening surf (01 Sep, local time) - 2.5ft (0.7m), 8s period with NW swell.
The current surf forecast for Castlerock at 1AM is: 0.6m 6s primary swell from a Northwest direction and 0.2m 9s secondary swell from a West direction (forecast issued at 06:00pm August 31). An open ocean swell of 0.4m 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 (01 Sep) | 1.5ft (0.5m) | 8s |
| Afternoon (01 Sep) | 2.5ft (0.8m) | 9s |
| Evening (01 Sep) | 2.5ft (0.7m) | 8s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 6mm), mostly falling on Wed morning. Very mild (max 18°C on Wed afternoon, min 13°C on Mon night). Mainly fresh winds. | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||||
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 6 | NW 7 | NW 6 | NW 6 | NNW 6 | WNW 7 | WNW 8 | WNW 9 | WNW 9 | WNW 8 | NW 8 | NW 8 | NW 8 | NW 8 | WNW 8 | NW 6 | NNW 9 | NNW 8 | NNW 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 74 | 61 | 38 | 31 | 15 | 17 | 37 | 88 | 99 | 90 | 69 | 53 | 55 | 53 | 24 | 12 | 15 | 38 | 37 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | glassy | glassy | cross-off | cross-off | cross-off | off | cross-off | off |
High Tide | 8:50PM1.89m | 9:01AM1.64m | 9:24PM1.77m | 9:39AM1.55m | |||||||||||||||
Low Tide | 2:34PM0.08m | 3:10AM0.21m | 3:05PM0.16m | 3:40AM0.30m | 3:42PM0.28m | ||||||||||||||
 | |  | | | | | |  |  |  | | | | | | | | | |
 | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:33 | — | — | — | — | — | — |
 | — | 8:22 | — | — | — | — | — | — | — | 8:21 | — | — | — | — | — | — | — | 8:17 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | 1 | 2 | 1 | — | — |
Temp °C | 15 | 15 | 14 | 13 | 13 | 14 | 16 | 17 | 16 | 15 | 15 | 14 | 14 | 14 | 13 | 14 | 15 | 18 | 17 |
Feels °C | 10 | 12 | 10 | 9 | 10 | 10 | 11 | 12 | 12 | 12 | 14 | 15 | 14 | 13 | 10 | 11 | 13 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | W 10 | NW 7 | NW 6 | NW 6 | NNW 6 | WNW 7 | WNW 8 | WNW 9 | WNW 9 | WNW 8 | NW 8 | NW 8 | NW 8 | NW 8 | WNW 8 | NW 6 | NW 6 | NNW 8 | NNW 8 |
| kJ | 2 | 61 | 38 | 31 | 15 | 17 | 37 | 88 | 99 | 90 | 69 | 53 | 55 | 53 | 24 | 11 | 10 | 38 | 37 |
Swell 2 Height (m) Direction Period (s) | — | W 10 | W 10 | W 9 | WNW 6 | NNW 6 | NNW 6 | N 6 | — | — | — | — | — | — | NW 7 | WNW 8 | NNW 9 | WNW 8 | WNW 7 |
| kJ | — | 2 | 8 | 7 | 8 | 7 | 3 | 1 | — | — | — | — | — | — | 11 | 12 | 15 | 11 | 11 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | WNW 9 | W 9 | — | — | — | — | — | — | — | — | — | NW 9 | WNW 8 | ESE 3 | E 3 |
| kJ | — | — | — | — | 8 | 2 | — | — | — | — | — | — | — | — | — | 3 | 12 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | NW 6 | — | — | SW 2 | SW 3 | SW 3 | SW 3 | W 3 | W 4 | WSW 3 | — | — | — | — | — | SE 2 | — | — | — |
| kJ | 74 | — | — | 1 | 2 | 3 | 4 | 7 | 12 | 1 | — | — | — | — | — | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 187 | 0 | 187 | 44 | 187 | 187 | 187 | 187 | 187 | 42 | 9 | 8 | 8 | 8 | 27 | 16 | 27 | 42 | 42 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
Header Global | |||||||||||||||||||
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