Surf Forecasts:
How big are the waves at Castlerock today (06 Sep):
- Morning surf: Morning surf (06 Sep, local time) - 2ft (0.6m), 8s period with NW swell.
- Afternoon surf: Afternoon surf (06 Sep, local time) - 1.5ft (0.4m), 8s period with NW swell.
- Evening surf: Evening surf (06 Sep, local time) - 1.5ft (0.4m), 11s period with WNW swell.
The current surf forecast for Castlerock at 10AM is: 0.6m 8s primary swell from a Northwest direction (forecast issued at 06:00am September 06). An open ocean swell of 0.1m 6s is not directed at the surf break, a second open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Sep) | 2ft (0.6m) | 8s |
| Afternoon (06 Sep) | 1.5ft (0.4m) | 8s |
| Evening (06 Sep) | 1.5ft (0.4m) | 11s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Mon afternoon. Warm (max 20°C on Sun afternoon, min 11°C on Mon night). Winds increasing (light winds from the SW on Sun night, strong winds from the WNW by Tue afternoon). | |||||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||||||||
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) | NNW 8 | NW 8 | NW 8 | NW 8 | NW 8 | WNW 11 | WNW 11 | WNW 11 | WNW 7 | WNW 7 | WNW 8 | WNW 11 | WNW 10 | NW 10 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 11 | NW 12 | NW 11 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 45 | 66 | 41 | 16 | 15 | 22 | 41 | 24 | 18 | 44 | 58 | 196 | 212 | 243 | 347 | 334 | 544 | 878 | 1009 | 1225 | 2317 | 3319 | 3122 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-on |
High Tide | 2:14AM1.15m | 3:13PM1.33m | 3:55AM1.24m | 4:26PM1.54m | 4:53AM1.37m | 5:16PM1.76m | |||||||||||||||||
Low Tide | 8:41AM0.64m | 10:04PM0.55m | 10:11AM0.50m | 11:12PM0.38m | 11:05AM0.32m | ||||||||||||||||||
 |  | | | |  |  | | | | | | |  | |  |  | |  | | | | | |
 | 6:41 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — |
 | — | — | — | — | — | 8:07 | — | — | — | — | — | — | — | 8:06 | — | — | — | — | — | — | — | 8:02 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 2 | — | — | — | — | 1 | 1 | 1 | 1 | 1 |
Temp °C | 14 | 16 | 18 | 19 | 19 | 20 | 15 | 14 | 13 | 13 | 14 | 16 | 15 | 13 | 12 | 12 | 11 | 12 | 13 | 14 | 14 | 13 | 13 |
Feels °C | 10 | 13 | 15 | 15 | 16 | 16 | 11 | 12 | 9 | 9 | 9 | 10 | 10 | 8 | 8 | 7 | 5 | 5 | 5 | 6 | 5 | 4 | 4 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NW 8 | NW 8 | NW 8 | NW 8 | WNW 11 | WNW 11 | WNW 8 | WNW 7 | WNW 7 | WNW 8 | WNW 11 | WNW 10 | NW 10 | NW 11 | NW 11 | NW 11 | NW 11 | — | — | — | — | — |
| kJ | 45 | 66 | 41 | 16 | 15 | 22 | 41 | 21 | 18 | 44 | 58 | 196 | 212 | 243 | 347 | 334 | 544 | 878 | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | WNW 9 | SE 5 | E 6 | WNW 8 | WNW 8 | ESE 4 | ESE 4 | WNW 11 | W 11 | WNW 15 | WNW 14 | WNW 11 | — | — | — | NW 14 | NNW 14 | — | — | — | — | — | — |
| kJ | 30 | 1 | 1 | 14 | 14 | 1 | 2 | 24 | 9 | 42 | 38 | 73 | — | — | — | 153 | 71 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 6 | SE 7 | NNW 8 | NW 8 | ESE 4 | WNW 8 | — | NW 11 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 1 | 2 | 6 | 2 | 1 | 7 | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | SE 3 | SSE 3 | SSE 3 | S 4 | SSW 3 | SW 2 | — | SW 2 | SSW 2 | SSW 3 | WSW 3 | SW 3 | SW 3 | SW 3 | SW 3 | SW 3 | SW 3 | NW 11 | NW 10 | NW 11 | NW 12 | NW 11 |
| kJ | 2 | 4 | 3 | 7 | 9 | 2 | 2 | — | 1 | 1 | 1 | 3 | 2 | 2 | 1 | 2 | 4 | 2 | 1009 | 1225 | 2317 | 3319 | 3122 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 0 | 0 | 390 | 404 | 390 | 393 | 187 | 42 | 27 | 9 | 187 | 9 | 559 | 187 | 9 | 27 | 430 | 380 | 414 | 500 | 382 | 772 | 365 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||||
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