Ballycastle Surf Break

Lat Long: 55.22° N 6.23° W

Ballycastle Surf Forecast and Surf Report

Issued: 12 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Ballycastle sea temperature is
15.0° C
0.3° 

Ballycastle surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Ballycastle surf forecast from 17 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 1PM (local time) - 5ft (1.5m), 11s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 18 Aug, 10PM (local time) - 5ft (1.5m), 11s period, WNW swell with 571 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 1PM (local time) - 5ft (1.5m), 11s 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 1PM. The primary swell is predicted to be 1.5m and 11s 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 1.5m 11s and forecast to arrive on Tuesday (Aug 18) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Aug 19) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Wed 19th Aug)5ft (1.5m) 11s
Best Surf 1PM (Wed 19th Aug)5ft (1.5m) 11s
Most Powerful10PM (Tue 18th Aug)5ft (1.5m) 11s

Table - best surf conditions forecast for Ballycastle over the next 16 days.


Short Range Forecast

Heavy rain (total 21mm), heaviest during Mon afternoon. Very mild (max 16°C on Mon morning, min 12°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Some drizzle, heaviest during Thu morning. Very mild (max 14°C on Thu morning, 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
Rating
(10 max)
0
0
0
0
0
0
1
2
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
WNW
9
0.2
W
9
0.6
W
3
0.9
WNW
6
1.1
WNW
8
1.5
WNW
11
1.6
WNW
11
1.3
WNW
11
1
WNW
10
0.6
WNW
10
1.3
NNW
7
1.3
NNW
7
1
NNW
6
0.9
NNW
6
1
NW
6
0.7
NNW
5
0.5
NW
4
0.6
NW
6
0.9
NW
6
0.9
NW
7
0.9
NW
7
Wave Graph
Metric surfscale
Energy kJ
16
6
7
45
149
540
550
412
204
75
160
154
82
56
61
22
10
25
56
75
71
Wind (km/h)
5
SSE
10
S
25
W
30
WSW
20
W
20
SW
20
SSW
5
S
10
N
10
N
25
NNW
20
NNW
20
N
25
NNW
15
NNW
15
NW
25
NW
20
W
25
W
25
WNW
15
WSW
Wind State
cross-off
cross-off
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-on
cross-on
on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross
High Tide
6:24AM0.51m
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
light rain
mod rain
light rain
cloud
part cloud
part cloud
light rain
rain showers
part cloud
rain showers
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:03
6:05
6:05
6:07
6:09
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:54
8:52
8:51
8:47
8:45
8:43
8:40
 mm
1
9
2
4
4
1
Temp °C
16
16
15
16
16
13
14
14
13
14
14
13
13
13
12
14
14
13
14
15
13
Feels °C
16
16
14
12
13
10
12
13
12
12
9
8
8
7
8
10
10
10
10
11
10
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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 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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