Rossnowlagh surf break

Rossnowlagh surfForecast / Donegal / Ireland

information circle12 Day Weather and Surf, issued 11 am Saturday 06 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
9.4° 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 Sunday (Dec 07) at 3AM. The primary swell is predicted to be 2.1m and 14s 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 3.5m 17s and forecast to arrive on Friday (Dec 12) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Tuesday (Dec 09) at 6AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sun 7th Dec)7ft (2.1m) 14s
Best Surf12PM (Fri 12th Dec)11ft (3.5m) 17s
Most Powerful 3PM (Fri 12th Dec)11ft (3.5m) 17s

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 39mm), heaviest during Sun morning. Very mild (max 11°C on Sat afternoon, min 8°C on Sat morning). Mainly fresh winds.

Days 3-6 Weather Summary Heavy rain (total 26mm), heaviest during Thu night. Very mild (max 12°C on Wed night, min 7°C on Thu night). Winds increasing (calm on Tue morning, strong winds from the S by Thu morning).

Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
4
2
3
2
0
0
2
3
4
4
0
0
0
0
2
0
0
1
5
!
3
Swell
Height Map
Wave Height (m) & direction (?)
3
W
3
W
2.4
W
1.6
W
1.7
W
1.2
W
1.9
W
3
W
2.5
W
2.5
W
3
W
1.8
W
2.1
W
2.2
W
2
W
1.8
W
1.9
W
1.2
W
3
W
3.5
W
3
W
Period(s) (?)191714141312191716161513121114121220181716
Wave
Graph
(?)Metric surfscale
Energy kJ (?)53824868237999899144126664998384536343766111012271107158594810131103629968514242
Wind
(km/h)
10
S
20
WSW
10
S
15
ESE
25
SW
15
S
20
SSW
20
S
10
E
0
NW
25
W
25
SW
35
WSW
30
WSW
10
W
35
SSE
25
SW
40
SSE
10
SSE
20
S
20
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
crosscross-
off
cross-
on
crosscrosscrossoffglassoncross-
on
cross-
on
cross-
on
oncross-
off
cross-
on
cross-
off
cross-
off
crosscross
High Tide
/ height (m)
6:36PM
3.47
6:58AM
3.85
7:27PM
3.28
7:48AM
3.78
8:18PM
3.05
8:40AM
3.63
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
Low Tide
/ height (m)
12:20PM
-0.01
12:31AM
0.11
1:11PM
0.06
1:16AM
0.24
2:03PM
0.23
2:03AM
0.43
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
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Sunrise8:37--8:38--8:40--8:41--8:42--8:44--8:45--
Sunset-4:08--4:07--4:07--4:07--4:07--4:07--4:07-
part cloud
rain showers
light rain
heavy rain
rain showers
rain showers
part cloud
part cloud
mod rain
light rain
part cloud
part cloud
rain showers
rain showers
light rain
cloud
light rain
heavy rain
light rain
part cloud
clear
Rain (mm)
-231923--104--211-3152--
Temp. °C101110999910111010991012111111888
Feels °C (?)7765354571043137163533
  • 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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