Rossnowlagh Surf Break

Lat Long: 54.57° N 8.23° W

Rossnowlagh 48 hour detailed Surf Forecast

Issued: 6 pm 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rossnowlagh sea temperature is
16.9° C
2.2° 

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


How big are the waves at Rossnowlagh today (22 Aug):

  • Morning surf: Morning surf (22 Aug, local time) - 1.5ft (0.4m), 6s period with NW swell.
  • Afternoon surf: Afternoon surf (22 Aug, local time) - 0.5ft (0.2m), 9s period with W swell.
  • Evening surf: Evening surf (22 Aug, local time) - 0.5ft (0.2m), 8s period with W swell.

The current surf forecast for Rossnowlagh at 1AM is: 0.5m 6s primary swell from a Northwest direction and 0.1m 10s secondary swell from a West direction (forecast issued at 06:00pm August 21). The wind direction is predicted to be cross-shore.

Time (IST) & DateWave HeightWave Period
Morning (22 Aug)1.5ft (0.4m)6s
Afternoon (22 Aug)0.5ft (0.2m)9s
Evening (22 Aug)0.5ft (0.2m)8s

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


Short Range Forecast

Some drizzle, heaviest during Fri afternoon. Very mild (max 19°C on Mon morning, min 11°C on Sun night). Wind will be generally light.

Fri
21
Saturday
22
Sunday
23
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
NNW
6
0.7
NW
6
0.7
NW
6
0.5
NW
6
0.4
NW
5
0.4
NW
6
0.4
NW
5
0.4
NW
5
0.2
W
9
0.2
W
9
0.2
W
8
0.2
WNW
6
0.2
W
9
0.2
WNW
9
0.2
W
9
0.2
WNW
9
0.4
WNW
8
0.3
WNW
8
0.3
WNW
8
Wave Graph
Metric surfscale
Energy kJ
47
38
36
16
10
11
7
7
7
7
6
3
6
8
6
8
26
13
13
Wind (km/h)
25
N
20
N
10
N
10
NNW
10
NNW
10
NNW
10
N
10
NNW
15
NW
10
NNW
5
NNW
0
WNW
0
SSW
5
S
5
SW
5
W
10
NW
5
NW
5
ENE
Wind State
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
glassy
glassy
glassy
glassy
glassy
on
cross-on
glassy
off
High Tide
1:36AM2.26m
2:30PM2.44m
3:13AM2.29m
3:52PM2.60m
Low Tide
7:19PM1.40m
7:53AM1.38m
9:08PM1.36m
9:23AM1.28m
rain showers
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:52
8:50
8:46
 mm
1
Temp °C
15
14
13
14
14
12
14
16
17
16
14
14
13
12
14
16
18
17
16
Feels °C
10
10
11
11
11
10
11
12
13
13
13
14
13
12
14
15
16
16
15
  • 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 Rossnowlagh 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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