Surf Forecasts:
Ballycastle surf forecast from 17 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 7PM (local time) - 3.5ft (1.1m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 7AM (local time) - 4.5ft (1.4m), 11s period, WNW swell with 460 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 7PM (local time) - 3.5ft (1.1m), 10s period with WNW swell.
Best Forecast Surf Conditions for Ballycastle this week:
The surf forecast for Ballycastle over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 7PM. The primary swell is predicted to be 1.1m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ballycastle in the next 16 days are 1.4m 11s and forecast to arrive on Wednesday (Aug 19) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Aug 19) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Wed 19th Aug) | 3.5ft (1.1m) 10s |
| Best Surf | 7PM (Wed 19th Aug) | 3.5ft (1.1m) 10s |
| Most Powerful | 7AM (Wed 19th Aug) | 4.5ft (1.4m) 11s |
Table - best surf conditions forecast for Ballycastle over the next 16 days.
Short Range ForecastModerate rain (total 18mm), heaviest on Mon afternoon. Very mild (max 16°C on Mon morning, min 11°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu morning. Very mild (max 15°C on Sat afternoon, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WNW 9 | W 9 | WNW 4 | WNW 6 | WNW 8 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | NNW 7 | NNW 6 | NNW 6 | NNW 6 | NW 5 | NNW 5 | NW 4 | NNW 4 | NW 5 | NW 6 | NW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 16 | 6 | 13 | 70 | 122 | 443 | 452 | 316 | 194 | 75 | 81 | 130 | 64 | 32 | 30 | 17 | 21 | 12 | 13 | 18 | 17 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-on | glassy | on | on | cross-on | cross-on | on | on | on | on | cross-on | on | on |
High Tide | 8:15PM0.55m | 7:09AM0.53m | 8:22PM0.51m | 7:53AM0.52m | 8:35PM0.48m | 8:35AM0.49m | 8:42PM0.44m | 9:16AM0.44m | 7:31PM0.42m | 10:08AM0.38m | 6:38PM0.45m | 6:53AM0.34m | 6:35PM0.49m | ||||||||
Low Tide | 1:39PM-0.00m | 2:08AM0.29m | 1:54PM0.07m | 1:54AM0.25m | 1:59PM0.15m | 1:50AM0.21m | 2:02PM0.21m | 2:04AM0.19m | 2:09PM0.26m | 2:24AM0.20m | 2:09PM0.31m | 2:45AM0.22m | 9:52AM0.30m | 2:56AM0.27m | |||||||
 | |  |  | |  | |  | |  |  | | |  |  | | | | | | | |
 | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — | — | 8:47 | — | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — |
mm | 2 | 5 | 2 | — | — | — | 1 | 6 | 2 | 2 | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 16 | 16 | 13 | 16 | 15 | 13 | 13 | 14 | 12 | 13 | 13 | 12 | 14 | 15 | 13 | 15 | 15 | 13 |
Feels °C | 16 | 16 | 14 | 12 | 12 | 10 | 13 | 14 | 11 | 13 | 9 | 8 | 10 | 10 | 8 | 10 | 11 | 11 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | NW 6 | — | — | — | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | NNW 6 | WNW 8 | NW 5 | W 7 | W 10 | W 10 | NW 5 | WNW 8 | NW 7 |
| kJ | 16 | 6 | — | — | — | 443 | 452 | 316 | 194 | 75 | 34 | 15 | 64 | 6 | 30 | 1 | 2 | 2 | 13 | 6 | 17 |
Swell 2 Height (m) Direction Period (s) | NW 7 | W 9 | — | — | — | — | — | — | — | NNW 8 | — | — | WNW 8 | — | W 8 | — | W 7 | — | WNW 9 | — | NW 6 |
| kJ | 7 | 6 | — | — | — | — | — | — | — | 42 | — | — | 13 | — | 4 | — | 1 | — | 7 | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NE 3 | — | — | — | — | — | — | W 8 | — | NW 7 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | 1 | — | 2 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 4 | WNW 6 | WNW 8 | SW 2 | SSW 3 | — | NNE 2 | — | NNW 7 | NNW 6 | — | NNW 6 | — | NNW 5 | NW 4 | NNW 4 | — | NW 6 | — |
| kJ | — | — | 13 | 70 | 122 | 1 | 3 | — | 1 | — | 81 | 130 | — | 32 | — | 17 | 21 | 12 | — | 18 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 52 | 335 | 289 | 384 | 26 | 26 | 11 | 52 | 38 | 349 | 272 | 307 | 232 | 183 | 269 | 249 | 250 | 72 | 145 | 72 |
Best forecast wave conditions in Antrim | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ballycastle surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Ballycastle Surf forecast
The above surf forecast table for Ballycastle provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ballycastle can be found by selecting the local surf guide option on the grey menu. Our Ballycastle surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ballycastle) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Ballycastle may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Antrim? If you are looking for accommodation near Ballycastle, camping, hotels and holiday cottages in Antrim, consider staying in Ballycastle which is 2 km (1 miles) away. Other places in and around Antrim where you can find information about places to rent, and car hire include Ballypatrick which is 6 km (4 miles) away, Coleraine, Ballymena and Campbeltown.
Nearest