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) - 2ft (0.6m), 9s period with WNW swell.
The current surf forecast for Castlerock at 1PM is: 0.4m 8s primary swell from a West-northwest direction and 0.4m 7s secondary swell from a Northwest direction (forecast issued at 06:00am July 01). The wind direction is predicted to be offshore.
| 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) | 2ft (0.6m) | 9s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 4mm), mostly falling on Wed afternoon. Warm (max 20°C on Fri afternoon, min 12°C on Wed night). Winds increasing (light winds from the WSW on Wed morning, strong winds from the W by Wed night). | ||||||||||||||||||||||||
Wednesday 1 | Thursday 2 | Friday 3 | Sat 4 | |||||||||||||||||||||
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 | 1 AM | |
Swell Height Map |  |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WNW 8 | WNW 8 | NW 8 | WNW 8 | NW 7 | NW 7 | WNW 9 | WNW 10 | WNW 8 | NW 9 | NW 9 | NW 9 | WNW 9 | NW 8 | NW 7 | NW 7 | NW 9 | NW 9 | NW 9 | NW 9 | NW 10 | NW 11 | NW 11 | NW 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 28 | 27 | 33 | 26 | 17 | 13 | 65 | 523 | 513 | 560 | 486 | 359 | 211 | 145 | 105 | 105 | 138 | 112 | 115 | 135 | 204 | 216 | 216 | 240 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | off | off | off | cross-off | cross | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 7:35AM1.48m | 8:04PM1.71m | 8:06AM1.48m | 8:39PM1.72m | 8:38AM1.46m | 9:14PM1.71m | ||||||||||||||||||
Low Tide | 2:05AM0.36m | 2:00PM0.22m | 2:41AM0.37m | 2:31PM0.20m | 3:15AM0.41m | 3:02PM0.21m | ||||||||||||||||||
 |  | | |  | | | | |  | | | |  | | |  | | | | | | | | |
 | 4:50 | — | — | — | — | — | — | — | 4:50 | — | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — | 4:52 |
 | — | — | — | — | — | — | 10:09 | — | — | — | — | — | — | — | 10:08 | — | — | — | — | — | — | — | 10:08 | 10:07 |
mm | — | — | — | — | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 14 | 16 | 13 | 15 | 15 | 13 | 13 | 12 | 14 | 15 | 15 | 15 | 13 | 12 | 12 | 12 | 14 | 15 | 18 | 20 | 17 | 17 |
Feels °C | 11 | 11 | 13 | 14 | 8 | 10 | 9 | 5 | 5 | 6 | 8 | 10 | 10 | 11 | 10 | 9 | 9 | 9 | 11 | 12 | 15 | 17 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | NW 8 | WNW 8 | NW 7 | NW 7 | WNW 9 | SE 5 | — | — | — | — | NNW 7 | NW 9 | NW 7 | NW 7 | NW 9 | NW 9 | NW 9 | NW 9 | NW 10 | NW 11 | NW 11 | NW 10 |
| kJ | 28 | 27 | 33 | 26 | 17 | 13 | 65 | 1 | — | — | — | — | 61 | 43 | 105 | 105 | 138 | 112 | 115 | 135 | 204 | 216 | 216 | 240 |
Swell 2 Height (m) Direction Period (s) | NNW 7 | NNW 7 | NNW 7 | NW 7 | NW 7 | W 9 | — | — | — | — | — | — | — | — | NW 9 | — | W 11 | W 11 | W 11 | W 11 | W 11 | — | — | — |
| kJ | 5 | 9 | 5 | 12 | 2 | 6 | — | — | — | — | — | — | — | — | 42 | — | 10 | 9 | 9 | 9 | 9 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | NW 3 | — | — | S 2 | S 3 | WSW 3 | WNW 10 | WNW 8 | NW 9 | NW 9 | NW 9 | WNW 9 | NW 8 | — | — | — | — | — | — | — | — | — | SW 3 |
| kJ | — | 1 | — | — | 1 | 1 | 6 | 523 | 513 | 560 | 486 | 359 | 211 | 145 | — | — | — | — | — | — | — | — | — | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 27 | 27 | 42 | 16 | 350 | 336 | 350 | 357 | 411 | 339 | 336 | 398 | 300 | 300 | 71 | 9 | 0 | 0 | 0 | 0 | 8 | 9 | 9 | 9 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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