Surf Forecasts:
How big are the waves at Castlerock today (02 Oct):
- Morning surf: Morning surf (02 Oct, local time) - 3.5ft (1.1m), 12s period with NW swell.
- Afternoon surf: Afternoon surf (02 Oct, local time) - 3.5ft (1.1m), 12s period with NW swell.
- Evening surf: Evening surf (02 Oct, local time) - 3.5ft (1.1m), 11s period with NW swell.
The current surf forecast for Castlerock at 4AM is: 1.3m 13s primary swell from a Northwest direction (forecast issued at 12:00am October 02). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 3.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (02 Oct) | 3.5ft (1.1m) | 12s |
| Afternoon (02 Oct) | 3.5ft (1.1m) | 12s |
| Evening (02 Oct) | 3.5ft (1.1m) | 11s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Fri morning. Very mild (max 17°C on Sun afternoon, min 10°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||||||
Friday 2 | Saturday 3 | Sunday 4 | ||||||||||||||||||||||
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) | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 10 | WNW 10 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 13 | NW 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 680 | 511 | 423 | 367 | 349 | 298 | 288 | 366 | 303 | 297 | 220 | 170 | 142 | 139 | 134 | 157 | 233 | 233 | 233 | 233 | 303 | 314 | 527 | 755 |
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 | off | off | off | off | off | off | off | cross-off | cross-off | cross-off |
High Tide | 10:09AM1.51m | 10:37PM1.30m | 11:17AM1.37m | 00:01AM1.12m | 1:15PM1.32m | |||||||||||||||||||
Low Tide | 3:51AM0.41m | 4:34PM0.48m | 4:48AM0.55m | 6:16PM0.62m | 6:29AM0.65m | 8:33PM0.62m | ||||||||||||||||||
 | | |  |  |  | |  | | | |  | |  |  | | | | | | | | | | |
 | — | — | 7:30 | — | — | — | — | — | — | — | 7:31 | — | — | — | — | — | — | — | 7:33 | — | — | — | — | — |
 | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 6:55 | — | — |
mm | — | — | — | — | 5 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 12 | 12 | 12 | 15 | 15 | 13 | 11 | 10 | 10 | 10 | 11 | 13 | 14 | 14 | 13 | 12 | 11 | 11 | 12 | 15 | 17 | 17 | 16 |
Feels °C | 9 | 8 | 8 | 7 | 10 | 10 | 8 | 6 | 6 | 6 | 7 | 8 | 10 | 11 | 11 | 10 | 8 | 7 | 6 | 7 | 11 | 14 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 10 | WNW 10 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 13 | NW 13 |
| kJ | 680 | 511 | 423 | 367 | 349 | 298 | 288 | 366 | 303 | 297 | 220 | 170 | 142 | 139 | 134 | 157 | 233 | 233 | 233 | 233 | 303 | 314 | 527 | 755 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SE 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 3 | SSE 3 | SSE 3 | SSE 3 | SSE 3 | SSE 3 | W 3 | — | SW 2 | SSW 2 | SSW 2 | — | — | — | — | — | — | SSE 2 | SSE 3 | SSE 3 | S 3 | S 3 | — | — |
| kJ | 3 | 2 | 3 | 3 | 2 | 2 | 2 | — | 1 | 1 | 1 | — | — | — | — | — | — | 1 | 1 | 3 | 3 | 2 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 387 | 384 | 384 | 9 | 9 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 9 | 9 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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