Surf Forecasts:
How big are the waves at Castlerock today (08 Sep):
- Morning surf: Morning surf (08 Sep, local time) - 7ft (2.2m), 11s period with NW swell.
- Afternoon surf: Afternoon surf (08 Sep, local time) - 8ft (2.5m), 10s period with NW swell.
- Evening surf: Evening surf (08 Sep, local time) - 8ft (2.5m), 10s period with NNW swell.
The current surf forecast for Castlerock at 10AM is: 2.3m 10s primary swell from a Northwest direction (forecast issued at 06:00am September 08). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Sep) | 7ft (2.2m) | 11s |
| Afternoon (08 Sep) | 8ft (2.5m) | 10s |
| Evening (08 Sep) | 8ft (2.5m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Thu morning. Very mild (max 16°C on Thu afternoon, min 12°C on Tue night). Winds decreasing (strong winds from the NW on Tue afternoon, calm by Wed afternoon). | |||||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||||||||
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 11 | NW 11 | NW 10 | NW 10 | NW 10 | NW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NW 8 | NW 7 | NW 7 | WNW 7 | WNW 9 | WNW 11 | WNW 11 | WNW 12 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 561 | 1070 | 1111 | 1178 | 1519 | 1729 | 1567 | 1147 | 798 | 501 | 307 | 202 | 96 | 56 | 41 | 28 | 27 | 26 | 21 | 30 | 47 | 48 | 27 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | glassy | cross-off | off | off | off | off | off | cross-off | cross-off | cross |
High Tide | 4:53AM1.37m | 5:16PM1.76m | 5:36AM1.49m | 5:58PM1.94m | 6:13AM1.60m | 6:36PM2.05m | |||||||||||||||||
Low Tide | 11:05AM0.32m | 11:58PM0.22m | 11:48AM0.16m | 00:37AM0.11m | 12:25PM0.03m | ||||||||||||||||||
 |  |  |  | | |  | | |  | | | | |  | | | | |  | | | | |
 | 6:45 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:48 | — | — | — | — | — | — |
 | — | — | — | — | — | 8:02 | — | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 7:58 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 13 | 14 | 15 | 15 | 14 | 12 | 12 | 12 | 13 | 14 | 15 | 16 | 14 |
Feels °C | 6 | 6 | 6 | 6 | 6 | 4 | 5 | 7 | 6 | 9 | 10 | 11 | 13 | 14 | 11 | 8 | 8 | 8 | 8 | 10 | 13 | 13 | 10 |
Swell 1 Height (m) Direction Period (s) | NW 11 | — | — | — | — | — | — | — | — | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NW 8 | NW 7 | NW 7 | WNW 7 | WNW 9 | WNW 11 | WNW 11 | WNW 12 |
| kJ | 561 | — | — | — | — | — | — | — | — | 501 | 307 | 202 | 96 | 56 | 41 | 28 | 27 | 26 | 21 | 30 | 47 | 48 | 27 |
Swell 2 Height (m) Direction Period (s) | NW 13 | — | — | — | — | — | — | — | — | — | — | WNW 9 | WNW 8 | NW 8 | WNW 8 | NNW 8 | NNW 7 | NNW 7 | N 7 | WNW 11 | SE 4 | ESE 4 | WNW 6 |
| kJ | 172 | — | — | — | — | — | — | — | — | — | — | 65 | 46 | 33 | 20 | 19 | 5 | 5 | 1 | 11 | 4 | 1 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 8 | — | W 12 | W 12 | — | N 7 | N 6 | ESE 7 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | — | 3 | 3 | — | 1 | 1 | 4 | — |
Wind waves Height (m) Direction Period (s) | WSW 4 | NW 11 | NW 10 | NW 10 | NW 10 | NW 11 | NNW 10 | NNW 10 | NNW 10 | — | — | — | — | — | — | — | — | SSE 2 | SE 3 | SSE 4 | SSW 3 | WSW 2 | WSW 3 |
| kJ | 13 | 1070 | 1111 | 1178 | 1519 | 1729 | 1567 | 1147 | 798 | — | — | — | — | — | — | — | — | 1 | 4 | 11 | 3 | 1 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 380 | 339 | 439 | 1115 | 1298 | 848 | 587 | 187 | 284 | 18 | 144 | 9 | 9 | 0 | 0 | 14 | 56 | 194 | 194 | 187 | 380 | 254 | 254 |
Best forecast wave conditions in Londonderry | |||||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||||
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