Surf Forecasts:
How big are the waves at Castlerock today (16 Jul):
- Afternoon surf: Afternoon surf (16 Jul, local time) - 0.5ft (0.1m), 11s period with NW swell.
- Evening surf: Evening surf (16 Jul, local time) - 1ft (0.3m), 12s period with NW swell.
The current surf forecast for Castlerock at 9PM is: 0.3m 12s primary swell from a Northwest direction and 0.1m 13s secondary swell from a Northwest direction (forecast issued at 06:00pm July 16). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Jul) | - | - |
| Afternoon (16 Jul) | 0.5ft (0.1m) | 11s |
| Evening (16 Jul) | 1ft (0.3m) | 12s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 20°C on Thu afternoon, min 12°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | |||||||||||||||||
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 11 | NW 13 | NW 12 | NW 11 | NW 11 | NNW 5 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 5 | 6 | 21 | 19 | 19 | 26 | 57 | 87 | 107 | 101 | 143 | 93 | 134 | 117 | 83 | 67 | 66 | 75 | 74 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on |
High Tide | 8:34PM2.05m | 8:45AM1.55m | 9:18PM2.00m | 9:25AM1.48m | 10:00PM1.89m | ||||||||||||||
Low Tide | 2:20PM0.01m | 3:15AM0.13m | 3:00PM0.02m | 3:59AM0.22m | 3:40PM0.08m | ||||||||||||||
 | |  |  | |  |  | | | | | | | | | | | | | |
 | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — |
 | — | 9:57 | — | — | — | — | — | — | — | 9:55 | — | — | — | — | — | — | — | 9:53 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 18 | 16 | 14 | 14 | 12 | 13 | 13 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 13 | 13 | 14 | 13 |
Feels °C | 18 | 17 | 15 | 12 | 12 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 9 | 9 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 10 | NW 12 | NW 11 | NNW 4 | NW 11 | NW 10 | NW 10 | NW 10 | NW 10 | NW 9 | NNE 6 | NW 8 | NW 8 | NW 8 | NW 8 | WNW 8 | NW 7 | NNW 6 |
| kJ | 5 | 4 | 21 | 19 | 6 | 18 | 17 | 16 | 15 | 23 | 19 | 68 | 18 | 17 | 16 | 9 | 6 | 14 | 74 |
Swell 2 Height (m) Direction Period (s) | W 6 | NW 13 | — | NW 9 | NW 11 | — | — | — | — | — | — | NW 9 | — | — | — | — | — | — | — |
| kJ | 1 | 6 | — | 3 | 19 | — | — | — | — | — | — | 19 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NW 6 | — | NNW 3 | — | NNW 5 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | — |
| kJ | — | 1 | — | 1 | — | 26 | 57 | 87 | 107 | 101 | 143 | 93 | 134 | 117 | 83 | 67 | 66 | 75 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 144 | 144 | 334 | 334 | 251 | 382 | 382 | 1263 | 2381 | 1263 | 321 | 251 | 321 | 266 | 266 | 266 | 266 | 266 | 78 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||
Header Global | |||||||||||||||||||
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