Rossnowlagh Surf Break

Lat Long: 54.57° N 8.23° W

Rossnowlagh Surf Forecast and Surf Report

Issued: 6 pm 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Rossnowlagh sea temperature is
18.0° C
3.6° 

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


Rossnowlagh surf forecast from 18 Jul 2026:

  • Most powerful swell: Saturday 25 Jul, 1PM (local time) - 5ft (1.6m), 11s period, WNW swell with 582 kJ wave energy.

Best Forecast Surf Conditions for Rossnowlagh this week:

The most powerful waves expected at Rossnowlagh in the next 16 days are 1.6m 11s and forecast to arrive on Saturday (Jul 25) at 1PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1PM (Sat 25th Jul)5ft (1.6m) 11s

Table - best surf conditions forecast for Rossnowlagh over the next 16 days.


Short Range Forecast

Mostly dry. Very mild (max 18°C on Sun morning, min 11°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 17°C on Tue afternoon, min 12°C on Tue night). Wind will be generally light.

Sat
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
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
Wave
Height (m)
Direction
Period (s)
0.6
NW
7
0.6
NW
7
0.5
NW
7
0.5
NW
7
0.3
W
11
0.4
W
11
0.4
W
11
0.4
W
10
0.4
W
10
0.3
W
9
0.3
W
9
0.3
W
9
0.3
W
9
0.6
NW
6
0.5
NW
6
0.4
NW
6
0.4
NW
6
0.9
WNW
10
0.9
WNW
9
1.3
WNW
8
Wave Graph
Metric surfscale
Energy kJ
43
28
23
22
21
35
35
31
30
15
15
15
14
23
18
9
8
137
143
227
Wind (km/h)
20
NNW
5
NNW
5
NNW
15
NW
5
NW
15
NNW
20
NW
10
NNW
5
NNW
15
NW
15
NNW
15
NW
15
NW
10
NW
10
WNW
20
W
15
W
20
WSW
25
W
25
WSW
Wind State
cross
cross-on
cross-on
cross-on
glassy
cross-on
cross-on
cross-on
cross
cross-on
cross
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
High Tide
9:45PM3.78m
10:12AM3.01m
10:30PM3.51m
10:59AM2.85m
11:16PM3.19m
11:49AM2.70m
00:07AM2.87m
12:46PM2.59m
1:07AM2.62m
1:54PM2.53m
2:20AM2.48m
3:07PM2.57m
3:34AM2.47m
Low Tide
4:01AM0.30m
3:57PM0.49m
4:45AM0.53m
4:44PM0.73m
5:32AM0.77m
5:38PM0.98m
6:25AM0.98m
6:45PM1.18m
7:28AM1.13m
8:08PM1.27m
8:40AM1.17m
9:27PM1.23m
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
cloud
part cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:22
5:24
5:26
5:26
5:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:57
9:54
9:53
9:52
9:51
9:50
9:47
 mm
13
Temp °C
16
13
18
18
14
16
16
13
17
17
13
16
15
12
16
16
13
16
16
15
Feels °C
12
12
15
15
12
13
12
12
15
14
12
13
13
9
13
13
11
12
12
12
  • 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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Information about the Rossnowlagh Surf forecast

The above surf forecast table for Rossnowlagh provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rossnowlagh can be found by selecting the local surf guide option on the grey menu. Our Rossnowlagh surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Rossnowlagh) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Rossnowlagh may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Rossnowlagh is 17 km (11 miles) from Killybegs. If you plan a holiday in Donegal, look for hotels and other accommodation in Killybegs. Killybegs has rooms for a wide range of budgets as well as car hire and transport links.

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