Surf Forecasts:
How big are the waves at Castlerock today (23 Jun):
- Morning surf: Morning surf (23 Jun, local time) - 1ft (0.3m), 7s period with NW swell.
- Afternoon surf: Afternoon surf (23 Jun, local time) - 1ft (0.3m), 6s period with NW swell.
- Evening surf: Evening surf (23 Jun, local time) - 1.5ft (0.4m), 5s period with NW swell.
The current surf forecast for Castlerock at 11AM is: 0.3m 6s primary swell from a Northwest direction and 0.1m 8s secondary swell from a North direction (forecast issued at 06:00am June 23). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Jun) | 1ft (0.3m) | 7s |
| Afternoon (23 Jun) | 1ft (0.3m) | 6s |
| Evening (23 Jun) | 1.5ft (0.4m) | 5s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 9mm), mostly falling on Thu morning. Warm (max 21°C on Thu afternoon, min 13°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 23 | Wednesday 24 | Thursday 25 | Fri 26 | |||||||||||||||||||||
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 | 1 AM | |
Swell Height Map |  |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 6 | NW 6 | NW 4 | NW 5 | NW 6 | WNW 6 | WNW 5 | WNW 6 | WNW 6 | WNW 6 | WNW 7 | WNW 7 | WNW 8 | WNW 8 | WNW 10 | WNW 10 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 7 | 7 | 7 | 6 | 6 | 3 | 7 | 8 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 12 | 14 | 41 | 40 | 42 | 44 | 44 | 35 | 20 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | glassy | on | on | on | on | glassy | glassy | glassy | glassy | on | on | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 1:37AM1.46m | 2:09PM1.14m | 2:45AM1.39m | 3:22PM1.21m | 3:44AM1.35m | 4:19PM1.30m | ||||||||||||||||||
Low Tide | 8:15AM0.56m | 8:02PM0.54m | 9:13AM0.56m | 9:18PM0.57m | 10:07AM0.52m | 10:28PM0.55m | ||||||||||||||||||
 |  |  | | | | |  | | |  | | | | | | | |  |  | | | |  | |
 | 4:46 | — | — | — | — | — | — | — | 4:47 | — | — | — | — | — | — | — | 4:47 | — | — | — | — | — | — | 4:48 |
 | — | — | — | — | — | — | 10:10 | — | — | — | — | — | — | — | 10:10 | — | — | — | — | — | — | — | 10:10 | 10:10 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | — | 1 | 1 |
Temp °C | 19 | 18 | 20 | 19 | 20 | 16 | 14 | 14 | 14 | 14 | 16 | 16 | 16 | 16 | 14 | 15 | 15 | 15 | 16 | 17 | 21 | 20 | 15 | 14 |
Feels °C | 19 | 19 | 21 | 18 | 20 | 15 | 14 | 15 | 15 | 15 | 17 | 15 | 15 | 15 | 12 | 16 | 15 | 14 | 15 | 16 | 22 | 21 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 6 | NW 6 | NW 4 | NW 5 | NW 6 | WNW 6 | WNW 5 | WNW 6 | WNW 6 | WNW 6 | WNW 7 | WNW 7 | WNW 8 | WNW 8 | WNW 10 | WNW 10 | WNW 10 | WNW 11 | WNW 11 | WNW 10 | WNW 10 |
| kJ | 7 | 7 | 7 | 6 | 6 | 3 | 7 | 8 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 12 | 14 | 41 | 40 | 42 | 44 | 44 | 35 | 20 |
Swell 2 Height (m) Direction Period (s) | N 9 | N 9 | N 8 | N 8 | N 8 | NW 6 | N 8 | N 8 | N 8 | NW 6 | N 7 | W 8 | W 8 | — | W 10 | W 13 | NW 12 | — | — | — | N 3 | E 3 | ESE 4 | ESE 4 |
| kJ | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | 2 | 4 | 6 | — | — | — | 1 | 1 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | W 10 | W 9 | W 9 | W 9 | N 8 | W 9 | W 9 | W 9 | N 7 | — | — | — | — | — | — | — | — | — | — | ENE 3 | N 3 | — | — |
| kJ | — | 2 | 2 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 2 | NNE 3 | — | ESE 3 | NNW 4 | NNW 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | 2 | 4 | 14 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 83 | 56 | 172 | 323 | 366 | 366 | 87 | 87 | 150 | 404 | 87 | 429 | 150 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 16 | 40 | 70 | 40 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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