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Ballycastle surfForecast / Antrim / Ireland
12 Day Weather and Surf, issued 11 pm Sunday 14 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
11.7° C
(Which is 1.7°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 15) at 6AM. The primary swell is predicted to be 1.7m and 13s 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 4.0m 20s and forecast to arrive on Thursday (Dec 18) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Wednesday (Dec 17) at 9AM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 15th Dec) | 5.5ft (1.7m) 13s |
| Best Surf | 3AM (Thu 18th Dec) | 11ft (3.5m) 21s |
| Most Powerful | 6AM (Thu 18th Dec) | 13ft (4.0m) 20s |
Table - best surf conditions forecast for Ballycastle over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Moderate rain (total 15mm), heaviest on Sun night. Mild temperatures (max 9°C on Sun night, min 4°C on Tue morning). Winds increasing (light winds from the SW on Mon afternoon, strong winds from the S by Tue night). | Days 3-6 Weather Summary Moderate rain (total 17mm), heaviest on Thu afternoon. Very mild (max 10°C on Sat morning, min 5°C on Thu night). Winds increasing (light winds from the S on Wed night, near gales from the SW by Thu afternoon). | |||||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 22 | 20 | 19 | 18 | 16 | 16 | 14 | 13 | 12 | 14 | 14 | 13 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 1144 | 1126 | 1846 | 2070 | 1546 | 1283 | 876 | 551 | 447 | 2873 | 11440 | 8688 | 5551 | 4483 | 4355 | 2519 | 890 | 703 | 1175 | 996 | 756 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- off | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross | cross- off | cross | cross- off | cross- off | cross- off | off | off | cross- off | |
High Tide / height (m) | 5:07AM 0.29 | 12:16PM 4:10PM 0.42 0.44 | 11:52PM 0.31 | 5:08AM 0.35 | 1:20PM 4:13PM 0.41 0.41 | 5:09AM 0.40 | 2:29PM 0.41 | 5:05AM 0.45 | 3:21PM 0.41 | 5:13AM 0.49 | 3:56PM 0.41 | 5:40AM 0.53 | 4:22PM 0.42 | 6:15AM 0.55 | 4:36PM 0.44 | |||||||
Low Tide / height (m) | 1:45AM 0.23 | 7:10AM 0.27 | 1:33PM 0.42 | 8:59PM 1:52AM 0.27 0.30 | 8:27AM 0.28 | 2:28PM 0.41 | 9:18PM 0.23 | 9:23AM 0.27 | 9:41PM 0.19 | 10:07AM 0.27 | 10:02PM 0.16 | 10:39AM 0.27 | 10:23PM 0.13 | 11:03AM 0.28 | 10:45PM 0.08 | 11:23AM 0.29 | ||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | ||||||||||||||||
| Sunrise | - | 8:44 | - | - | 8:45 | - | - | 8:45 | - | - | 8:47 | - | - | 8:47 | - | - | 8:48 | - | - | 8:48 | - | |
| Sunset | - | - | 3:55 | - | - | 3:55 | - | - | 3:55 | - | - | 3:55 | - | - | 3:55 | - | - | 3:56 | - | - | 3:56 | |
 |  |  |  |  | |  |  | | | |  | | | |  | | |  | | | ||
Rain (mm) | 6 | - | - | - | - | - | 3 | 2 | 4 | - | 5 | 9 | 1 | - | - | 1 | - | 1 | 11 | - | - | |
| Temp. °C | 9 | 7 | 7 | 6 | 6 | 5 | 6 | 9 | 9 | 8 | 9 | 9 | 6 | 6 | 7 | 9 | 10 | 10 | 9 | 8 | 7 | |
| Feels °C (?) | 4 | 3 | 4 | 3 | 2 | 1 | -4 | 2 | 5 | 4 | 4 | 4 | -4 | -2 | 0 | 2 | 3 | 2 | 4 | 1 | 0 | |
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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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