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Ballycastle surfForecast / Antrim / Ireland
12 Day Weather and Surf, issued 5 am Saturday 20 Dec 2025 GMTForecast 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
11.5° C
(Which is 1.8°C warmer than normal for this time of year)Best Forecast Surf Conditions for Ballycastle this week:
The surf forecast for Ballycastle over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Dec 22) at 12AM. The primary swell is predicted to be 1.7m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ballycastle in the next 12 days are 2.2m 16s and forecast to arrive on Sunday (Dec 21) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Sunday (Dec 21) at 12AM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 22nd Dec) | 5.5ft (1.7m) 14s |
| Best Surf | 12AM (Mon 22nd Dec) | 5.5ft (1.7m) 14s |
| Most Powerful | 9AM (Sun 21st Dec) | 7ft (2.2m) 16s |
Table - best surf conditions forecast for Ballycastle over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 9mm), mostly falling on Sat night. Very mild (max 10°C on Mon morning, min 8°C on Sat morning). Winds decreasing (strong winds from the SE on Sat night, light winds from the S by Mon night). | Days 3-6 Weather Summary Mostly dry. Mild temperatures (max 9°C on Wed morning, min 4°C on Wed night). Winds decreasing (fresh winds from the NNW on Tue night, light winds from the ESE by Thu afternoon). | ||||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 16 | 16 | 14 | 13 | 12 | 11 | 16 | 14 | 13 | 13 | 13 | 13 | 12 | 11 | 13 | 14 | 17 | 14 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 689 | 359 | 224 | 2349 | 1982 | 1126 | 563 | 299 | 151 | 119 | 437 | 444 | 1380 | 821 | 535 | 325 | 270 | 253 | 183 | 179 | 581 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | cross- off | cross- off | cross- off | off | cross- off | cross- on | cross- on | cross- on | cross- off | cross- off | off | off | off | cross- off | cross | cross- off | cross- off |
High Tide / height (m) | 4:22PM 0.42 | 6:15AM 0.55 | 4:36PM 0.44 | 6:55AM 0.56 | 4:34PM 0.46 | 7:37AM 0.57 | 4:33PM 0.47 | 8:19AM 0.57 | 4:48PM 0.48 | 9:00AM 0.57 | 5:10PM 0.47 | 9:42AM 0.57 | 5:33PM 0.44 | ||||||||
Low Tide / height (m) | 11:03AM 0.28 | 10:45PM 0.08 | 11:23AM 0.29 | 11:13PM 0.04 | 11:46AM 0.31 | 11:43PM -0.00 | 12:14PM 0.33 | 12:16AM -0.02 | 12:51PM 0.35 | 12:50AM -0.03 | 1:36PM 0.37 | 1:23AM -0.01 | 2:33PM 0.39 | 1:55AM 0.03 | |||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | |||||||||||||||
| Sunrise | 8:48 | - | - | 8:48 | - | - | 8:48 | - | - | 8:49 | - | - | 8:49 | - | - | 8:49 | - | - | 8:51 | - | - |
| Sunset | - | 3:56 | - | - | 3:56 | - | - | 3:56 | - | - | 3:56 | - | - | 3:57 | - | - | 3:57 | - | - | 3:59 | - |
 |  |  |  | | | |  |  | | | | | |  | | | | | | | |
Rain (mm) | - | - | 5 | 1 | - | 3 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 9 | 9 | 8 | 8 | 8 | 9 | 8 | 5 | 4 | 4 | 5 | 5 | 5 | 5 |
| Feels °C (?) | 2 | 0 | 1 | 2 | 4 | 5 | 6 | 5 | 6 | 3 | 1 | -1 | 3 | 3 | -2 | -1 | 0 | 0 | 0 | 1 | -2 |
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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.
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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 12 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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