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Surf Forecasts:
Ballycastle surfForecast / Antrim / Ireland
16 Day Weather and Surf, issued 6 pm Monday 18 May 2026 BSTForecast update in hr min s Forecast update imminent
Ballycastle surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ballycastle sea temperature is
9.7° C
(Which is slightly cooler than normal)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 Tuesday (May 19) at 7AM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.1m and 15s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Ballycastle in the next 16 days are 0.9m 14s and forecast to arrive on Wednesday (May 20) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Tuesday (May 19) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 19th May) | 1.5ft (0.5m) 10s |
| Best Surf | 7AM (Tue 19th May) | 1.5ft (0.5m) 10s |
| Most Powerful | 10AM (Wed 20th May) | 3ft (0.9m) 14s |
Table - best surf conditions forecast for Ballycastle over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 17mm), heaviest on Mon night. Very mild (max 17°C on Thu morning, min 9°C on Mon night). Winds decreasing (strong winds from the SE on Mon night, light winds from the SW by Wed night). | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Fri night. Warm (max 20°C on Thu afternoon, min 11°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
WNW 11 | WNW 10 | WNW 10 | NW 9 | WNW 16 | WNW 14 | WNW 13 | W 12 | WNW 11 | WNW 11 | WNW 11 | WNW 13 | WNW 12 | WNW 12 | W 12 | W 11 | W 10 | WNW 10 | W 10 | WNW 9 | WNW 13 | |
222 | 114 | 37 | 21 | 99 | 297 | 137 | 75 | 43 | 23 | 23 | 17 | 28 | 27 | 10 | 9 | 8 | 32 | 49 | 29 | 67 | |
Wind (km/h) | |||||||||||||||||||||
off | off | cross-off | cross-off | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | glassy | cross-off | cross | cross-off | cross-off | cross-off | |
High Tide | 7:23PM0.52m | 5:04AM0.39m | 7:33PM0.55m | 5:08AM0.39m | 8:14PM0.55m | 5:17AM0.42m | 10:27PM0.54m | 5:13AM0.46m | 1:38AM0.55m | 3:18AM0.59m | 4:05AM0.60m | ||||||||||
Low Tide | 00:54AM0.19m | 12:37PM0.11m | 1:40AM0.27m | 1:00PM0.07m | 2:30AM0.36m | 1:19PM0.04m | 3:38AM0.45m | 1:30PM0.03m | 1:32PM0.03m | 1:48PM0.06m | |||||||||||
 |  |  | |  |  |  |  | | | | | | |  | |  | | | | | |
 | — | — | 5:09 | — | — | 5:07 | — | — | 5:07 | — | — | 5:05 | — | — | 5:03 | — | — | 5:01 | — | — | 5:01 |
 | — | 9:30 | — | — | 9:32 | — | — | 9:35 | — | — | 9:36 | — | — | 9:37 | — | — | 9:39 | — | — | 9:40 | 9:43 |
— | 6 | 1 | 3 | 4 | 1 | — | 2 | — | 1 | 3 | — | 3 | 4 | — | — | — | — | — | — | — | |
Temp °C | 11 | 11 | 13 | 14 | 10 | 13 | 14 | 13 | 17 | 20 | 16 | 17 | 18 | 15 | 16 | 17 | 15 | 15 | 18 | 16 | 18 |
6 | 7 | 9 | 11 | 8 | 9 | 11 | 11 | 15 | 18 | 13 | 15 | 16 | 14 | 14 | 17 | 14 | 14 | 16 | 15 | 18 | |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WNW 10 | WNW 10 | NW 9 | WNW 16 | WNW 14 | WNW 8 | W 12 | WNW 7 | WNW 7 | WNW 11 | W 11 | WNW 12 | WNW 12 | WNW 6 | WNW 6 | WNW 6 | WNW 10 | W 10 | WNW 9 | WNW 13 |
 kJ | 222 | 114 | 37 | 21 | 99 | 297 | 60 | 75 | 17 | 20 | 23 | 9 | 28 | 27 | 3 | 6 | 8 | 32 | 49 | 29 | 67 |
Swell 2 Height (m) Direction Period (s) | — | — | W 15 | NW 13 | WNW 9 | — | WNW 13 | WNW 6 | WNW 11 | WNW 11 | NW 7 | WNW 13 | NW 6 | ESE 4 | W 12 | W 11 | W 10 | — | — | W 16 | WNW 9 |
| kJ | — | — | 4 | 7 | 17 | — | 137 | 15 | 43 | 23 | 7 | 17 | 2 | 1 | 10 | 9 | 7 | — | — | 5 | 28 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SE 5 | — | SSE 4 | SE 6 | ESE 3 | S 6 | SSE 6 | WNW 6 | — | N 6 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 3 | — | 2 | 1 | 1 | 1 | 3 | 4 | — | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | SE 5 | SE 6 | SE 6 | — | SW 3 | WNW 4 | — | SSW 2 | SSE 3 | SE 4 | SE 4 | SE 5 | — | WSW 2 | — | — | — | — | SE 4 | SE 3 |
| kJ | 3 | 91 | 40 | 19 | — | 2 | 4 | — | 1 | 2 | 3 | 9 | 17 | — | 1 | — | — | — | — | 2 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 19 | 153 | 204 | 193 | 11 | 26 | 11 | 11 | 73 | 19 | 73 | 90 | 72 | 38 | 72 | 38 | 72 | 72 | 38 | 52 | 11 |
Best forecast wave conditions in Antrim | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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