Rossnowlagh surf break

Rossnowlagh surfForecast / Donegal / Ireland

information circle12 Day Weather and Surf, issued 5 am Tuesday 09 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 1.3°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 Thursday (Dec 11) at 9PM. The primary swell is predicted to be 3.0m and 17s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Rossnowlagh in the next 12 days are 4.0m 17s and forecast to arrive on Friday (Dec 12) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Tuesday (Dec 09) at 3PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Thu 11th Dec)10ft (3.0m) 17s
Best Surf 6AM (Fri 12th Dec)13ft (4.0m) 17s
Most Powerful12PM (Fri 12th Dec)13ft (4.0m) 17s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 16mm), heaviest on Thu afternoon. Very mild (max 15°C on Tue morning, min 6°C on Thu night). Winds decreasing (near gales from the WSW on Tue afternoon, light winds from the S by Thu afternoon).

Days 3-6 Weather Summary Heavy rain (total 21mm), heaviest during Sat afternoon. Very mild (max 12°C on Sat morning, min 7°C on Fri morning). Winds increasing (light winds from the S on Fri night, strong winds from the S by Sun afternoon).

Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
0
0
0
1
1
3
5
!
0
!
0
0
!
0
0
0
4
4
4
Swell
Height Map
Wave Height (m) & direction (?)
2
W
1.9
W
4
W
3
W
3
W
2.5
W
2
W
2.4
W
3
W
4
W
4
W
3.5
W
3
W
3
W
3.5
W
3
W
2.4
W
2.1
W
2.2
W
2
W
1.7
W
Period(s) (?)161513111214131917171716141415151414141414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1933155051312388245728171387395650911028596906633396237144848328123421719198416081033
Wind
(km/h)
35
SSE
35
S
40
SW
40
WSW
30
SW
30
S
40
SSE
15
SW
15
SSE
20
S
30
SW
20
S
25
SSW
30
SSW
25
SSW
40
SSW
40
S
40
S
5
WSW
5
ESE
5
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crosscross-
on
cross-
on
cross-
on
crosscross-
off
cross-
on
cross-
off
crosscross-
on
crosscross-
on
cross-
on
crosscrosscrosscrossglassoffcross-
off
High Tide
/ height (m)
9:12PM
2.81
9:34AM
3.44
10:10PM
2.61
10:32AM
3.23
11:15PM
2.48
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
Low Tide
/ height (m)
2:59PM
0.44
2:52AM
0.64
3:59PM
0.66
3:47AM
0.87
5:05PM
0.83
4:53AM
1.06
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
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Sunrise8:41--8:42--8:44--8:45--8:45--8:47--8:48--
Sunset-4:07--4:07--4:07--4:07--4:07--4:06--4:06-
light rain
light rain
rain showers
rain showers
cloud
cloud
light rain
light rain
part cloud
clear
rain showers
rain showers
light rain
light rain
mod rain
light rain
cloud
light rain
light rain
cloud
cloud
Rain (mm)
1442--14--222392-12--
Temp. °C151291011111077889121211111111101010
Feels °C (?)95-1256134215666333988
  • 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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