Ballyhiernan Bay Surf Break

Lat Long: 55.25° N 7.71° W

Ballyhiernan Bay 48 hour detailed Surf Forecast

Issued: 12 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Ballyhiernan Bay sea temperature is
16.4° C
1.9° 

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


How big are the waves at Ballyhiernan Bay today (21 Aug):

  • Morning surf: Morning surf (21 Aug, local time) - 4ft (1.2m), 6s period with NNW swell.
  • Afternoon surf: Afternoon surf (21 Aug, local time) - 3.5ft (1.1m), 6s period with NNW swell.
  • Evening surf: Evening surf (21 Aug, local time) - 3.5ft (1.0m), 6s period with NNW swell.

The current surf forecast for Ballyhiernan Bay at 8AM is: 1.2m 6s primary swell from a North-northwest direction and 0.4m 8s secondary swell from a West-northwest direction, 0.1m 15s secondary swell from a West direction (forecast issued at 12:00am August 21). The wind direction is predicted to be cross-onshore.

Time (IST) & DateWave HeightWave Period
Morning (21 Aug)4ft (1.2m)6s
Afternoon (21 Aug)3.5ft (1.1m)6s
Evening (21 Aug)3.5ft (1.0m)6s

Table - waves today at Ballyhiernan Bay. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 2mm), mostly falling on Thu night. Very mild (max 15°C on Sun morning, min 13°C on Thu night). Winds decreasing (fresh winds from the N on Thu night, light winds from the NNW by Sat morning).

Friday
21
Saturday
22
Sunday
23
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
NNW
7
1.4
NNW
6
1.3
NNW
6
1.2
NNW
6
1.2
NNW
6
1.1
NNW
6
1.1
NNW
6
1
NNW
6
0.9
NNW
5
0.8
NNW
5
0.8
NNW
5
0.7
NNW
5
0.3
W
9
0.3
W
9
0.2
W
9
0.2
W
9
0.4
NW
5
0.4
NW
5
0.3
WNW
9
0.6
NW
6
0.6
NW
7
0.7
NW
7
0.7
NW
7
0.8
NW
7
Wave Graph
Metric surfscale
Energy kJ
181
144
121
112
112
92
79
65
51
37
30
23
14
14
7
7
7
6
16
21
35
44
44
57
Wind (km/h)
30
N
30
N
25
N
30
NNE
30
N
25
N
25
N
25
N
25
N
25
NNW
20
NNW
5
NNW
15
WNW
20
WNW
15
WNW
15
WNW
15
WSW
15
SW
10
SSW
10
SW
15
WNW
15
WNW
10
NW
5
ESE
Wind State
on
on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-on
cross-on
on
cross-off
High Tide
00:29AM2.24m
1:17PM2.23m
2:11AM2.11m
3:09PM2.25m
3:53AM2.18m
4:26PM2.43m
Low Tide
6:45AM1.26m
7:45PM1.34m
8:25AM1.33m
9:33PM1.30m
9:54AM1.21m
part cloud
part cloud
rain showers
rain showers
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:16
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:52
8:49
8:46
 mm
1
1
Temp °C
13
13
13
13
13
13
13
13
14
13
13
13
14
14
14
14
14
13
13
13
15
14
14
14
Feels °C
6
7
7
7
7
7
8
7
9
8
8
11
11
11
11
12
12
11
11
11
13
11
12
13
  • 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
How to use the Wavefinder 

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 Ballyhiernan Bay 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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