Surf Forecasts:
How big are the waves at Castlerock today (24 Jul):
- Morning surf: Morning surf (24 Jul, local time) - 3.5ft (1.1m), 9s period with NW swell.
- Afternoon surf: Afternoon surf (24 Jul, local time) - 3.5ft (1.1m), 8s period with NW swell.
- Evening surf: Evening surf (24 Jul, local time) - 3.5ft (1.1m), 8s period with NW swell.
The current surf forecast for Castlerock at 5AM is: 1.0m 10s primary swell from a Northwest direction and 0.6m 10s secondary swell from a Northwest direction (forecast issued at 12:00am July 24). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Jul) | 3.5ft (1.1m) | 9s |
| Afternoon (24 Jul) | 3.5ft (1.1m) | 8s |
| Evening (24 Jul) | 3.5ft (1.1m) | 8s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 6mm), mostly falling on Sat morning. Very mild (max 19°C on Fri afternoon, min 12°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the W by Sat night). | ||||||||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||||||||||
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 10 | NW 10 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 9 | NW 10 | NW 10 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 10 | NW 10 | NW 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 44 | 196 | 231 | 211 | 197 | 162 | 201 | 176 | 160 | 180 | 405 | 757 | 831 | 868 | 763 | 639 | 523 | 603 | 597 | 639 | 626 | 681 | 640 | 542 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross | off | cross | cross | cross | cross | cross | cross | cross |
High Tide | 3:07AM1.16m | 3:55PM1.22m | 4:19AM1.19m | 4:53PM1.32m | 5:09AM1.26m | 5:36PM1.44m | ||||||||||||||||||
Low Tide | 9:20AM0.65m | 10:15PM0.66m | 10:33AM0.59m | 11:22PM0.58m | 11:26AM0.49m | |||||||||||||||||||
 | |  | | |  |  |  | | | |  | | | | |  | | | | |  | | | |
 | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:45 | — | — | — | — | — | — | — | 9:44 | — | — | — | — | — | — | — | 9:42 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | 1 | 1 | — | 1 | 1 | — | — |
Temp °C | 13 | 12 | 13 | 16 | 18 | 19 | 17 | 14 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 14 |
Feels °C | 11 | 9 | 11 | 12 | 13 | 14 | 12 | 12 | 10 | 8 | 9 | 9 | 10 | 12 | 13 | 14 | 13 | 10 | 9 | 9 | 8 | 9 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 10 | NW 10 | NW 9 | — | — | — | NW 8 | NW 8 | NW 8 | NW 9 | — | — | NW 11 | NW 11 | NW 11 | NW 10 | — | — | — | — | — | — | NW 10 |
| kJ | 44 | 196 | 231 | 211 | — | — | — | 176 | 160 | 180 | 405 | — | — | 868 | 763 | 639 | 523 | — | — | — | — | — | — | 542 |
Swell 2 Height (m) Direction Period (s) | NW 11 | NW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 29 | 89 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NW 9 | NW 8 | NW 8 | — | WSW 2 | W 3 | W 4 | NW 10 | NW 10 | — | — | — | — | NW 10 | NW 10 | NW 9 | NW 9 | NW 10 | NW 10 | — |
| kJ | — | — | — | — | 197 | 162 | 201 | — | 1 | 5 | 19 | 757 | 831 | — | — | — | — | 603 | 597 | 639 | 626 | 681 | 640 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 9 | 419 | 1263 | 1263 | 1301 | 794 | 9 | 391 | 1092 | 1081 | 387 | 387 | 387 | 9 | 0 | 159 | 334 | 334 | 334 | 334 | 349 | 341 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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