Surf Forecasts:
How big are the waves at Castlerock today (09 Jul):
- Morning surf: Morning surf (09 Jul, local time) - 1.5ft (0.4m), 9s period with WNW swell.
- Afternoon surf: Afternoon surf (09 Jul, local time) - 1.5ft (0.4m), 9s period with WNW swell.
- Evening surf: Evening surf (09 Jul, local time) - 1.5ft (0.4m), 9s period with WNW swell.
The current surf forecast for Castlerock at 9AM is: 0.4m 9s primary swell from a West-northwest direction (forecast issued at 12:00am July 09). The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 Jul) | 1.5ft (0.4m) | 9s |
| Afternoon (09 Jul) | 1.5ft (0.4m) | 9s |
| Evening (09 Jul) | 1.5ft (0.4m) | 9s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 19°C on Thu morning, min 11°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | ||||||||||||||||||||||
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) | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NW 12 | WNW 11 | WNW 11 | NW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 35 | 34 | 32 | 32 | 32 | 32 | 31 | 26 | 16 | 15 | 35 | 81 | 75 | 82 | 65 | 65 | 72 | 68 | 64 | 60 | 56 | 32 | 31 | 30 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | off | glassy | glassy | on | on | glassy | glassy | glassy | glassy | on | on | on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on |
High Tide | 1:10AM1.46m | 1:56PM1.21m | 2:30AM1.44m | 3:19PM1.30m | 3:48AM1.47m | 4:27PM1.45m | ||||||||||||||||||
Low Tide | 7:52AM0.51m | 7:51PM0.55m | 9:06AM0.48m | 9:22PM0.51m | 10:18AM0.42m | |||||||||||||||||||
 | |  |  |  | | | |  |  | | | | | | | | | | | | | | | |
 | — | 4:58 | — | — | — | — | — | — | — | 5:00 | — | — | — | — | — | — | — | 5:01 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 10:04 | — | — | — | — | — | — | — | 10:04 | — | — | — | — | — | — | — | 10:02 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 15 | 18 | 19 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 15 | 12 | 11 | 11 | 11 | 11 | 12 | 13 | 14 | 15 | 14 |
Feels °C | 14 | 13 | 14 | 19 | 19 | 17 | 17 | 16 | 17 | 17 | 17 | 16 | 17 | 13 | 9 | 8 | 7 | 8 | 8 | 9 | 11 | 12 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NW 12 | WNW 11 | WNW 11 | NW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | NNW 5 | NNW 5 | NNW 5 | NNW 5 |
| kJ | 35 | 34 | 32 | 32 | 32 | 32 | 31 | 26 | 16 | 15 | 35 | 81 | 75 | 82 | 65 | 65 | 72 | 68 | 64 | 60 | 37 | 29 | 22 | 22 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NW 14 | NW 12 | WNW 9 | — | — | — | — | — | — | N 5 | — | — | WNW 9 | WNW 9 | WNW 9 | WNW 9 |
| kJ | — | — | — | — | — | — | — | — | 7 | 6 | 15 | — | — | — | — | — | — | 12 | — | — | 56 | 32 | 31 | 30 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 2 | NNW 4 | NNW 4 | NNW 5 | NNW 5 | N 5 | NNW 5 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 6 | 15 | 23 | 17 | 33 | 45 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 14 | 14 | 16 | 16 | 42 | 42 | 42 | 16 | 40 | 16 | 8 | 40 | 131 | 144 | 300 | 71 | 71 | 71 | 76 | 74 | 66 | 66 | 63 | 63 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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