Rossnowlagh Surf Break

Lat Long: 54.57° N 8.23° W

Rossnowlagh 48 hour detailed Surf Forecast

Issued: 6 am 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rossnowlagh sea temperature is
16.2° C
1.4° 

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 (09 Aug):

  • Morning surf: Morning surf (09 Aug, local time) - 4.5ft (1.3m), 9s period with W swell.
  • Afternoon surf: Afternoon surf (09 Aug, local time) - 3.5ft (1.1m), 9s period with WNW swell.
  • Evening surf: Evening surf (09 Aug, local time) - 3.5ft (1.0m), 9s period with WNW swell.

The current surf forecast for Rossnowlagh at 1PM is: 1.2m 9s primary swell from a West-northwest direction (forecast issued at 06:00am August 09). The wind direction is predicted to be cross-onshore.

Time (IST) & DateWave HeightWave Period
Morning (09 Aug)4.5ft (1.3m)9s
Afternoon (09 Aug)3.5ft (1.1m)9s
Evening (09 Aug)3.5ft (1.0m)9s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Sun morning. Warm (max 23°C on Tue afternoon, min 12°C on Sun night). Wind will be generally light.

Sunday
9
Monday
10
Tuesday
11
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
1
1
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)
1.2
W
9
1.3
W
9
1.3
W
9
1.2
WNW
9
1.1
WNW
9
1
WNW
9
0.9
WNW
9
0.9
WNW
8
0.9
WNW
8
0.8
WNW
8
0.7
WNW
8
0.7
WNW
8
0.6
WNW
8
0.6
WNW
8
0.5
WNW
7
0.5
W
7
0.4
WNW
7
0.3
NW
8
0.3
W
7
0.3
W
7
0.2
W
13
0.3
W
12
0.5
W
11
Wave Graph
Metric surfscale
Energy kJ
246
276
276
248
206
169
131
125
119
87
67
63
45
44
31
27
16
9
8
8
12
25
63
Wind (km/h)
15
SW
15
SW
10
WSW
10
NW
10
WNW
15
WNW
10
W
5
W
5
SSW
5
S
5
WSW
10
W
5
WNW
5
N
10
E
10
ESE
10
ESE
10
ESE
15
SE
15
S
20
S
10
SSE
10
SSE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
glassy
glassy
glassy
cross-on
on
glassy
glassy
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
High Tide
3:45PM2.96m
4:20AM2.89m
4:49PM3.29m
5:21AM3.09m
5:43PM3.63m
Low Tide
9:18AM0.89m
10:05PM0.78m
10:25AM0.68m
11:08PM0.47m
11:18AM0.43m
cloud
light rain
light rain
light rain
cloud
clear
part cloud
clear
part cloud
clear
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:58
6:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:17
9:15
9:14
 mm
1
2
1
Temp °C
14
14
14
14
14
15
14
14
13
12
14
16
17
18
16
14
13
12
16
20
23
23
21
Feels °C
12
12
13
13
12
12
12
13
12
11
13
14
16
17
14
12
10
10
13
17
20
22
21
  • 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 

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