Surf Forecasts:
How big are the waves at Castlerock today (03 Jul):
- Morning surf: Morning surf (03 Jul, local time) - 3ft (0.9m), 9s period with NW swell.
- Afternoon surf: Afternoon surf (03 Jul, local time) - 3ft (0.9m), 11s period with NW swell.
- Evening surf: Evening surf (03 Jul, local time) - 3ft (0.9m), 11s period with NW swell.
The current surf forecast for Castlerock at 8AM is: 0.9m 9s primary swell from a Northwest direction and 0.1m 11s secondary swell from a West direction (forecast issued at 12:00am July 03). An open ocean swell of 0.3m 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 (03 Jul) | 3ft (0.9m) | 9s |
| Afternoon (03 Jul) | 3ft (0.9m) | 11s |
| Evening (03 Jul) | 3ft (0.9m) | 11s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 8mm), mostly falling on Fri afternoon. Warm (max 21°C on Sun afternoon, min 11°C on Fri afternoon). Mainly fresh winds. | ||||||||||||||||||||||||
Friday 3 | Saturday 4 | Sunday 5 | ||||||||||||||||||||||
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) | NW 7 | NW 9 | NW 9 | NW 9 | NW 9 | NW 11 | NW 11 | NW 10 | WNW 10 | WNW 10 | NW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NW 9 | NW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 105 | 138 | 112 | 112 | 110 | 194 | 187 | 184 | 272 | 261 | 184 | 161 | 180 | 176 | 255 | 168 | 141 | 101 | 79 | 74 | 59 | 56 | 56 | 71 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:38AM1.46m | 9:14PM1.71m | 9:12AM1.43m | 9:49PM1.68m | 9:50AM1.38m | |||||||||||||||||||
Low Tide | 3:15AM0.41m | 3:02PM0.21m | 3:50AM0.44m | 3:32PM0.24m | 4:25AM0.47m | 4:04PM0.29m | ||||||||||||||||||
 | |  | | |  | | |  | |  | | | | | | | | | | | | | | |
 | — | 4:52 | — | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — | — | 4:54 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 10:08 | — | — | — | — | — | — | — | 10:07 | — | — | — | — | — | — | — | 10:07 |
mm | — | — | — | — | — | 3 | 2 | 1 | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 13 | 12 | 14 | 13 | 11 | 13 | 14 | 15 | 14 | 15 | 17 | 18 | 15 | 15 | 14 | 14 | 14 | 15 | 16 | 19 | 21 | 18 | 17 |
Feels °C | 9 | 10 | 9 | 11 | 10 | 8 | 11 | 11 | 13 | 10 | 11 | 13 | 14 | 11 | 11 | 11 | 12 | 13 | 14 | 14 | 16 | 18 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 9 | NW 9 | NW 9 | NW 9 | NW 11 | NW 11 | NW 10 | WNW 10 | WNW 10 | NW 10 | WNW 10 | WNW 9 | WNW 9 | — | WNW 9 | WNW 9 | WNW 9 | NW 9 | NW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
| kJ | 105 | 138 | 112 | 112 | 110 | 194 | 187 | 184 | 272 | 261 | 184 | 161 | 180 | 176 | — | 168 | 141 | 101 | 79 | 74 | 59 | 56 | 56 | 71 |
Swell 2 Height (m) Direction Period (s) | — | — | W 11 | W 11 | — | NW 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 2 | 2 | — | 60 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | WSW 2 | WSW 2 | — | — | — | — | W 3 | SSW 2 | SSW 3 | WSW 3 | W 4 | W 4 | WNW 4 | WNW 9 | — | — | — | — | W 3 | W 3 | W 3 | W 4 | SW 3 |
| kJ | — | 1 | 1 | — | — | — | — | 2 | 1 | 1 | 3 | 12 | 19 | 16 | 255 | — | — | — | — | 1 | 5 | 5 | 6 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 9 | 9 | 9 | 0 | 0 | 2 | 0 | 9 | 9 | 150 | 340 | 357 | 398 | 1037 | 339 | 387 | 0 | 0 | 0 | 9 | 336 | 350 | 187 | 9 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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