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), 9s 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 7PM is: 1.1m 8s primary swell from a Northwest direction (forecast issued at 12:00pm July 24). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Jul) | 3.5ft (1.1m) | 9s |
| Afternoon (24 Jul) | 3.5ft (1.1m) | 9s |
| Evening (24 Jul) | 3.5ft (1.1m) | 8s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Sat morning. Very mild (max 19°C on Fri afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the WSW on Fri night, light winds from the WSW by Sat night). | |||||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | |||||||||||||||||||
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 9 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 10 | NW 10 | NW 10 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 183 | 178 | 162 | 158 | 158 | 180 | 180 | 469 | 602 | 789 | 763 | 716 | 595 | 487 | 517 | 527 | 535 | 496 | 597 | 517 | 478 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross |
High Tide | 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 | — | — | — | — | — | — | — |
Temp °C | 15 | 18 | 19 | 17 | 15 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 15 | 15 | 15 | 13 |
Feels °C | 11 | 14 | 14 | 12 | 13 | 10 | 9 | 9 | 10 | 12 | 13 | 14 | 14 | 12 | 9 | 9 | 9 | 10 | 9 | 10 | 9 |
Swell 1 Height (m) Direction Period (s) | NW 9 | — | — | — | NW 8 | NW 8 | NW 8 | NW 10 | NW 10 | NW 10 | NW 11 | NW 11 | NW 11 | NW 11 | — | — | — | — | — | — | NW 10 |
| kJ | 183 | — | — | — | 158 | 180 | 180 | 469 | 602 | 789 | 763 | 716 | 595 | 487 | — | — | — | — | — | — | 478 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 3 | NW 9 | NW 8 | NW 8 | — | — | W 3 | W 4 | WNW 4 | — | — | — | — | W 2 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | — |
| kJ | 2 | 178 | 162 | 158 | — | — | 5 | 14 | 25 | — | — | — | — | 1 | 517 | 527 | 535 | 496 | 597 | 517 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1263 | 1263 | 1263 | 1301 | 0 | 9 | 1092 | 1092 | 387 | 387 | 387 | 387 | 0 | 9 | 334 | 334 | 334 | 334 | 334 | 415 | 387 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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