Surf Forecasts:
How big are the waves at Castlerock today (01 Jul):
- Morning surf: Morning surf (01 Jul, local time) - 1.5ft (0.4m), 8s period with WNW swell.
- Afternoon surf: Afternoon surf (01 Jul, local time) - 1.5ft (0.4m), 7s period with NW swell.
- Evening surf: Evening surf (01 Jul, local time) - 1.5ft (0.4m), 9s period with WNW swell.
The current surf forecast for Castlerock at 2AM is: 0.4m 9s primary swell from a West-northwest direction and 0.2m 7s secondary swell from a North-northwest direction (forecast issued at 06:00pm June 30). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Jul) | 1.5ft (0.4m) | 8s |
| Afternoon (01 Jul) | 1.5ft (0.4m) | 7s |
| Evening (01 Jul) | 1.5ft (0.4m) | 9s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 11mm), heaviest on Wed afternoon. Very mild (max 16°C on Tue afternoon, min 12°C on Wed afternoon). Winds increasing (light winds from the WSW on Wed morning, strong winds from the WNW by Wed night). | ||||||||||||||||||||||||
Tue 30 | Wednesday 1 | Thursday 2 | Fri 3 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | WNW 9 | NW 9 | NW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | NW 7 | NW 7 | WNW 9 | W 10 | WNW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 9 | NW 9 | NW 9 | NW 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 56 | 40 | 39 | 31 | 28 | 27 | 26 | 26 | 12 | 13 | 30 | 306 | 673 | 532 | 457 | 296 | 227 | 130 | 94 | 69 | 138 | 112 | 95 | 93 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | cross | cross-off | off | off | off | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | off | off | cross-off | off |
High Tide | 7:29PM1.68m | 7:35AM1.48m | 8:04PM1.71m | 8:06AM1.48m | 8:39PM1.72m | 8:38AM1.46m | ||||||||||||||||||
Low Tide | 1:27PM0.26m | 2:05AM0.36m | 2:00PM0.22m | 2:41AM0.37m | 2:31PM0.20m | 3:15AM0.41m | ||||||||||||||||||
 |  |  |  | | | | |  | | | |  |  | | | | | | | | | | | |
 | — | — | — | — | 4:50 | — | — | — | — | — | — | — | 4:50 | — | — | — | — | — | — | — | 4:52 | — | — | — |
 | — | — | 10:09 | — | — | — | — | — | — | — | 10:09 | — | — | — | — | — | — | — | 10:08 | — | — | — | — | 10:08 |
mm | 2 | — | — | — | — | — | — | — | 3 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Temp °C | 16 | 15 | 13 | 13 | 13 | 13 | 14 | 15 | 12 | 15 | 16 | 14 | 13 | 12 | 14 | 15 | 15 | 14 | 13 | 12 | 13 | 13 | 13 | 14 |
Feels °C | 15 | 13 | 11 | 12 | 12 | 11 | 13 | 13 | 8 | 11 | 11 | 8 | 4 | 5 | 8 | 10 | 10 | 10 | 10 | 9 | 11 | 10 | 9 | 12 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | NW 9 | NW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | NW 7 | NW 7 | WNW 9 | SE 4 | — | — | — | — | — | NW 9 | NW 7 | NW 7 | NW 9 | NW 9 | NW 9 | NW 9 |
| kJ | 56 | 40 | 39 | 31 | 28 | 27 | 26 | 26 | 12 | 13 | 30 | 1 | — | — | — | — | — | 42 | 94 | 69 | 138 | 112 | 95 | 93 |
Swell 2 Height (m) Direction Period (s) | ESE 5 | E 4 | E 4 | NW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NW 7 | W 9 | — | — | — | — | — | — | — | — | NW 9 | NW 9 | W 11 | W 11 | W 11 | W 10 |
| kJ | 3 | 4 | 1 | 9 | 5 | 5 | 5 | 5 | 2 | 6 | — | — | — | — | — | — | — | — | 42 | 42 | 2 | 2 | 9 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | W 14 | E 3 | — | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 4 | 1 | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 2 | S 3 | SW 3 | W 10 | WNW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 7 | — | — | — | — | — | SW 2 |
| kJ | — | — | — | — | — | — | — | — | 1 | 2 | 2 | 306 | 673 | 532 | 457 | 296 | 227 | 130 | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 14 | 63 | 70 | 131 | 27 | 27 | 42 | 40 | 83 | 334 | 382 | 382 | 780 | 411 | 398 | 398 | 298 | 251 | 0 | 0 | 0 | 0 | 2 | 0 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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