Surf Forecasts:
How big are the waves at Castlerock today (26 Jun):
- Morning surf: Morning surf (26 Jun, local time) - 1ft (0.3m), 10s period with WNW swell.
- Afternoon surf: Afternoon surf (26 Jun, local time) - 2.5ft (0.8m), 5s period with NNW swell.
- Evening surf: Evening surf (26 Jun, local time) - 2ft (0.6m), 5s period with NNW swell.
The current surf forecast for Castlerock at 5AM is: 0.3m 10s primary swell from a West-northwest direction and 0.6m 5s secondary swell from a North-northwest direction (forecast issued at 12:00am June 26). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 Jun) | 1ft (0.3m) | 10s |
| Afternoon (26 Jun) | 2.5ft (0.8m) | 5s |
| Evening (26 Jun) | 2ft (0.6m) | 5s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 14mm), heaviest on Fri morning. Very mild (max 19°C on Fri night, min 12°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||||||
Friday 26 | Saturday 27 | Sunday 28 | ||||||||||||||||||||||
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 | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | NNW 5 | NNW 5 | WNW 10 | WNW 10 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | WNW 9 | WNW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | WNW 11 | WNW 10 | WNW 13 | WNW 13 | WNW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 20 | 20 | 19 | 19 | 36 | 39 | 29 | 21 | 15 | 11 | 8 | 10 | 22 | 21 | 20 | 20 | 18 | 17 | 18 | 47 | 60 | 147 | 384 | 377 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-off | off | off | off | off | off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:35AM1.35m | 5:04PM1.40m | 5:17AM1.37m | 5:43PM1.48m | 5:55AM1.41m | 6:19PM1.56m | ||||||||||||||||||
Low Tide | 10:28PM0.55m | 10:55AM0.48m | 11:24PM0.50m | 11:37AM0.42m | 00:10AM0.44m | 12:16PM0.36m | ||||||||||||||||||
 | |  | |  | | |  |  |  |  | | | | | | | |  | | | | | | |
 | — | 4:48 | — | — | — | — | — | — | — | 4:48 | — | — | — | — | — | — | — | 4:48 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 10:10 | — | — | — | — | — | — | — | 10:10 | — | — | — | — | — | — | — | 10:10 |
mm | 1 | 1 | 1 | 1 | 2 | 2 | 2 | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | 1 | — | — |
Temp °C | 14 | 14 | 13 | 12 | 13 | 15 | 15 | 19 | 18 | 15 | 17 | 18 | 18 | 18 | 17 | 16 | 14 | 14 | 13 | 14 | 16 | 16 | 15 | 13 |
Feels °C | 12 | 12 | 10 | 9 | 12 | 15 | 16 | 20 | 17 | 13 | 15 | 14 | 15 | 17 | 15 | 15 | 11 | 12 | 10 | 9 | 12 | 12 | 10 | 9 |
Swell 1 Height (m) Direction Period (s) | NNW 5 | NNW 5 | WNW 10 | N 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | WNW 11 | WNW 10 | WNW 13 | WNW 13 | WNW 12 |
| kJ | 19 | 17 | 19 | 7 | 36 | 39 | 29 | 21 | 15 | 11 | 5 | 5 | 22 | 21 | 20 | 20 | 18 | 17 | 18 | 47 | 60 | 147 | 384 | 377 |
Swell 2 Height (m) Direction Period (s) | WNW 10 | WNW 10 | — | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | N 5 | ESE 4 | ESE 4 | ESE 4 | E 4 | W 12 | WNW 12 | — | — | — | — | — |
| kJ | 20 | 20 | — | 19 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 2 | 3 | 1 | 2 | 1 | 3 | 14 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WNW 10 | — | — | SE 6 | — | — | W 12 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 10 | — | — | 1 | — | — | 3 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 5 | — | NNW 5 | NNW 5 | — | — | — | — | ESE 3 | ESE 3 | SE 2 | SE 3 | SE 4 | — | — | — | — | — | — | — | WSW 2 | WSW 2 | — | — |
| kJ | 11 | — | 17 | 19 | — | — | — | — | 1 | 1 | 1 | 5 | 6 | — | — | — | — | — | — | — | 1 | 1 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 66 | 76 | 300 | 76 | 78 | 63 | 40 | 40 | 40 | 56 | 56 | 194 | 187 | 42 | 40 | 42 | 40 | 42 | 42 | 42 | 9 | 8 | 71 | 9 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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