Rossnowlagh surf break

Rossnowlagh surfForecast / Donegal / Ireland

information circle48hr Weather and Surf, issued 6 pm Monday 18 May 2026 IST
Forecast update in hr  min  s Forecast update imminent
Rossnowlagh surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rossnowlagh sea temperature is
11.3° C
(Which is normal for this time of year)

How big are the waves at Rossnowlagh today?

The current surf forecast for Rossnowlagh at 1AM is: 0.7m 10s primary swell from a West-northwest direction and 0.1m 15s secondary swell from a West direction (forecast issued at 06:00pm May 18). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (IST) & DateWave HeightWave Period
Morning (19 May)1.5ft (0.4m)9s
Afternoon (19 May)2ft (0.6m)9s
Evening (19 May)3ft (0.9m)16s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 18mm), heaviest on Mon night. Very mild (max 17°C on Thu morning, min 10°C on Mon afternoon). Wind will be generally light.

Mon
18
Tuesday
19
Wednesday
20
Thu
21
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
1 AM
4 AM
7 AM
10 AM
1 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
2
2
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.1
W
10
1
W
10
0.8
WNW
10
0.7
WNW
10
0.6
W
10
0.5
W
9
0.4
W
9
0.5
W
9
0.6
W
9
0.5
W
16
0.9
W
16
1.4
W
16
1.5
W
15
1.8
W
14
1.7
W
14
1.6
W
13
1.4
W
13
1.3
W
12
1.2
W
12
1.1
W
12
0.9
W
11
0.8
W
11
0.8
W
11
0.7
W
11
Wave Graph
Metric surfscale
Energy kJ
250
204
131
100
67
44
25
41
58
129
396
928
945
1315
1052
861
640
485
400
327
206
149
149
112
Wind (km/h)
20
SSE
20
SE
25
SE
20
SE
10
SSE
15
SSE
20
S
25
SSW
15
SSW
15
SSW
10
SW
15
SW
20
SW
25
SW
20
WSW
15
SW
20
W
10
SW
10
SSE
10
ESE
15
S
15
SSW
15
SSW
20
SSW
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-off
off
cross
cross
cross
cross
High Tide
7:47PM3.77m
8:13AM3.43m
8:36PM3.72m
9:06AM3.19m
9:29PM3.61m
10:03AM2.93m
Low Tide
1:23PM0.03m
1:55AM0.04m
2:08PM0.18m
2:47AM0.17m
2:55PM0.38m
3:45AM0.37m
cloud
light rain
light rain
light rain
light rain
cloud
rain showers
light rain
light rain
light rain
rain showers
part cloud
cloud
light rain
light rain
light rain
part cloud
cloud
part cloud
cloud
light rain
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:20
5:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:36
9:37
9:38
9:40
1
2
3
1
3
1
1
1
1
1
1
1
1
Temp °C
13
10
10
10
11
12
12
14
12
11
11
10
10
11
12
12
14
12
13
11
14
14
15
17
8
6
4
6
9
10
9
9
9
8
9
7
6
6
9
9
10
10
12
9
12
11
13
14
Swell 1
Height (m)
Direction
Period (s)
1.1
W
10
1
W
10
0.8
WNW
10
0.7
WNW
10
0.6
W
10
0.5
W
9
0.4
W
9
0.5
W
9
0.6
W
9
0.7
W
10
0.9
W
16
1.4
W
16
1.5
W
15
1.8
W
14
1.7
W
14
1.6
W
13
1.4
W
13
1.3
W
12
1.2
W
12
1.1
W
12
0.9
W
11
0.8
W
11
0.8
W
11
0.7
W
11
Energy kJ
250
204
131
100
67
44
25
41
58
87
396
928
945
1315
1052
861
640
485
400
327
206
149
149
112
Swell 2
Height (m)
Direction
Period (s)
0.1
W
16
0.1
W
15
0.1
W
15
0.2
W
15
0.3
WNW
9
0.2
W
13
0.3
W
13
0.5
W
16
0.6
W
10
0.1
NW
6
0.2
WNW
6
0.3
NW
6
0.3
NW
7
Energy kJ
5
5
4
17
17
14
31
129
66
1
3
6
8
Swell 3
Height (m)
Direction
Period (s)
0.2
W
14
0.1
W
18
0.2
W
17
0.4
W
13
0.1
NW
9
Energy kJ
16
6
22
55
3
Wind waves
Height (m)
Direction
Period (s)
0.3
SSE
2
0.5
SE
3
0.5
SE
3
0.4
SSE
3
0.4
SSE
3
0.5
S
3
0.5
S
3
0.3
SSW
3
0.3
SSW
3
0.4
SW
3
0.9
WSW
5
1
WSW
5
0.3
S
3
0.4
S
3
0.5
S
3
0.5
S
3
Energy kJ
1
4
5
4
4
5
5
2
2
2
41
46
1
2
5
5
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
1
1
1
1
1
2
2
3
1
4
4
1
3
2
2
2
1
1
1
1
Distance (km)
8
8
130
8
9
9
57
48
48
8
48
42
123
73
73
182
73
8
0
0
48
48
48
48
Best forecast wave conditions in Donegal
Rating
(10 max)
2
2
1
1
1
1
2
2
3
4
2
2
2
3
2
2
2
Best forecast wave conditions in Ireland
Rating
(10 max)
2
2
1
1
1
1
1
1
2
3
2
3
1
4
4
4
2
3
3
2
2
2
1
Header Global
Rating
(10 max)
5
5
4
4
4
4
4
4
5
4
5
5
5
4
5
5
4
5
5
4
4
5
5
4
  • 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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