Rossnowlagh surf break

Rossnowlagh surfForecast / Donegal / Ireland

information circle12 Day Weather and Surf, issued 5 am Friday 12 Dec 2025 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
9.2° C
(Which is 1.2°C colder than average for this time of year)


Best Forecast Surf Conditions for Rossnowlagh this week:

The surf forecast for Rossnowlagh over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Dec 12) at 12PM. The primary swell is predicted to be 4.0m and 18s period. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Rossnowlagh in the next 12 days are 5.5m 19s and forecast to arrive on Thursday (Dec 18) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Fri 12th Dec)13ft (4.0m) 18s
Best Surf12PM (Fri 12th Dec)13ft (4.0m) 18s
Most Powerful 3AM (Thu 18th Dec)18ft (5.5m) 19s

Table - best surf conditions forecast for Rossnowlagh over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 23mm), heaviest during Sun morning. Very mild (max 13°C on Sun night, min 6°C on Fri morning). Mainly strong winds.

Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Tue night. Very mild (max 11°C on Wed morning, min 5°C on Mon night). Winds increasing (light winds from the SW on Mon morning, strong winds from the S by Tue night).

Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
!
!
!
0
0
2
2
3
1
3
3
3
3
3
1
0
0
!
!
0
0
Swell
Height Map
Wave Height (m) & direction (?)
4.5
W
4
W
3.5
W
3
W
3
W
3
W
2.4
W
2.2
W
1.9
W
2.5
W
2.5
W
3
W
2.5
W
2.5
W
2
W
2
W
2.1
W
5.5
W
5.5
W
5
W
3.5
W
Period(s) (?)181716151414141413141515151413131320191917
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1132789797441397332672847209317301285257032433688308525071401130515302201021765164116078
Wind
(km/h)
15
S
20
SSW
15
S
40
S
35
SSW
20
SSW
20
SSW
5
SW
35
S
10
SW
10
SW
10
S
10
S
15
S
40
SSE
30
SW
35
SW
30
SW
25
SE
50
SE
65
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
crosscrosscross-
on
crosscrosscross-
on
cross-
off
cross-
on
cross-
on
crosscrosscrosscross-
off
cross-
on
cross-
on
cross-
on
cross-
off
cross-
off
cross
High Tide
/ height (m)
11:33AM
3.04
12:23AM
2.45
12:37PM
2.89
1:30AM
2.52
1:39PM
2.81
2:28AM
2.65
2:36PM
2.79
3:16AM
2.80
3:25PM
2.83
3:58AM
2.96
4:09PM
2.89
4:35AM
3.10
4:49PM
2.95
Low Tide
/ height (m)
6:14PM
0.91
6:09AM
1.18
7:17PM
0.93
7:24AM
1.19
8:11PM
0.89
8:27AM
1.11
8:56PM
0.82
9:18AM
0.98
9:36PM
0.74
10:01AM
0.85
10:13PM
0.66
10:41AM
0.72
10:49PM
0.58
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Sunrise8:45--8:45--8:47--8:48--8:48--8:49--8:49--
Sunset-4:07--4:07--4:06--4:06--4:07--4:07--4:07-
clear
clear
part cloud
cloud
light rain
light rain
mod rain
light rain
light rain
part cloud
part cloud
part cloud
clear
part cloud
light rain
rain showers
clear
rain showers
light rain
mod rain
mod rain
Rain (mm)
----35852-----41-1197
Temp. °C78791212121213886671011989129
Feels °C (?)2330588117553235411-12-3
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 12 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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