Rossnowlagh Surf Break

Lat Long: 54.57° N 8.23° W

Rossnowlagh 48 hour detailed Surf Forecast

Issued: 12 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rossnowlagh sea temperature is
16.8° C
1.9° 

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 (17 Aug):

  • Morning surf: Morning surf (17 Aug, local time) - 2.5ft (0.7m), 8s period with W swell.
  • Afternoon surf: Afternoon surf (17 Aug, local time) - 2.5ft (0.7m), 8s period with W swell.
  • Evening surf: Evening surf (17 Aug, local time) - 4ft (1.2m), 6s period with W swell.

The current surf forecast for Rossnowlagh at 6AM is: 0.8m 9s primary swell from a West direction and 0.2m 7s secondary swell from a North-northwest direction (forecast issued at 12:00am August 17). The wind direction is predicted to be onshore.

Time (IST) & DateWave HeightWave Period
Morning (17 Aug)2.5ft (0.7m)8s
Afternoon (17 Aug)2.5ft (0.7m)8s
Evening (17 Aug)4ft (1.2m)6s

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


Short Range Forecast

Heavy rain (total 24mm), heaviest during Mon morning. Very mild (max 16°C on Mon afternoon, min 13°C on Tue night). Mainly fresh winds.

Monday
17
Tuesday
18
Wednesday
19
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
0
0
0
0
0
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)
0.8
W
8
0.8
W
9
0.8
W
9
0.7
W
8
0.7
W
8
0.6
W
8
0.7
WSW
8
1.2
W
6
1.2
W
7
1.3
W
7
1.4
W
7
1.5
W
7
1.5
W
8
1.8
W
10
2
W
10
2.1
W
11
2.2
W
11
2.4
W
10
2.5
W
10
2.4
W
11
2.3
W
11
2
W
10
1.8
WNW
10
1.7
WNW
10
Wave Graph
Metric surfscale
Energy kJ
91
97
95
68
63
46
63
109
142
177
206
243
291
605
851
1029
1075
1177
1453
1313
1185
851
667
574
Wind (km/h)
10
WSW
10
WSW
10
WSW
10
SW
10
SW
10
S
20
SW
25
W
20
W
25
W
25
W
25
W
25
WSW
30
W
30
W
25
WSW
25
WSW
30
WSW
25
SW
25
WSW
25
WSW
30
W
15
NW
10
NW
Wind State
on
on
on
cross-on
cross-on
cross
cross-on
on
on
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
High Tide
9:33AM3.18m
9:49PM3.41m
10:11AM3.01m
10:28PM3.06m
10:53AM2.80m
Low Tide
3:20AM0.25m
3:23PM0.40m
3:55AM0.51m
4:04PM0.67m
4:32AM0.79m
4:49PM0.96m
cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
part cloud
cloud
rain showers
rain showers
part cloud
light rain
light rain
light rain
light rain
rain showers
rain showers
rain showers
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:13
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:00
8:59
8:55
 mm
1
4
1
2
1
1
1
1
1
2
3
3
2
1
Temp °C
15
15
15
15
15
16
16
16
15
15
14
15
16
16
15
14
13
13
13
14
15
15
16
13
Feels °C
14
14
15
15
15
15
14
13
12
12
10
11
11
11
10
9
8
8
8
10
11
11
14
11
  • 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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