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Surf Forecasts:

Rossnowlagh surf break

Rossnowlagh surfForecast / Donegal / Ireland

information circle12 Day Weather and Surf, issued 6 am Thursday 28 Aug 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
17.8° C
 (Which is 3.2°C warmer than normal 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 Saturday (Aug 30) at 4AM. The primary swell is predicted to be 1.2m and 9s 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 3.0m 11s and forecast to arrive on Monday (Sep 01) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 30) at 1PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sat 30th Aug)4ft (1.2m) 9s
Best Surf 4AM (Sat 30th Aug)4ft (1.2m) 9s
Most Powerful 4PM (Mon 1st Sep)10ft (3.0m) 11s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 42mm), heaviest during Sat afternoon. Very mild (max 16°C on Thu afternoon, min 12°C on Fri night). Winds increasing (light winds from the SSE on Fri night, fresh winds from the S by Sat night).

Days 3-6 Weather Summary Moderate rain (total 17mm), heaviest on Mon morning. Very mild (max 15°C on Sun afternoon, min 11°C on Mon night). Winds decreasing (strong winds from the S on Sun morning, calm by Tue night).

Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
01
Tuesday
02
Wednesday
03
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.5
W
3
W
2.4
W
2.3
W
1.7
WNW
1.3
W
1
W
1.1
WSW
2.5
W
2.5
W
1.9
W
2
W
3
W
3
W
2.1
W
1.6
W
1.4
WNW
1.2
W
0.9
WNW
0.6
W
0.5
W
Period(s) (?)131211109999131213121111109988811
Wave
Graph
(?)Metric surfscale
Energy (?)21942376137610055172871642072412199511851092196825348614303112001094671
Wind
(km/h)
20
SSW
30
WSW
25
WSW
30
W
25
WNW
10
SW
25
SE
25
WSW
25
S
40
S
35
S
15
SSW
30
WSW
35
WSW
25
WSW
15
SW
15
W
5
SW
5
W
15
WNW
0
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on		cross-
on		ononcross-
on		cross-
off		oncrosscrosscrosscrossononcross-
on		cross-
on		onglassononglass
High Tide
/ height (m)
9:39PM
3.13
9:58AM
2.89
10:13PM
2.84
10:36AM
2.70
10:54PM
2.57
11:26AM
2.51
11:53PM
2.33
12:46PM
2.37
1:27AM
2.21
2:31PM
2.40
3:09AM
2.29
3:49PM
2.63
Low Tide
/ height (m)
3:20PM
0.59
3:43AM
0.68
3:55PM
0.83
4:15AM
0.92
4:35PM
1.08
4:56AM
1.16
5:30PM
1.33
5:59AM
1.36
7:12PM
1.49
7:51AM
1.41
9:10PM
1.40
9:23AM
1.25
10:15PM
1.15
Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
01
Tuesday
02
Wednesday
03
Sunrise6:31--6:33--6:35--6:37--6:37--6:39--6:41--
Sunset-8:35--8:32--8:30--8:28--8:24--8:22--8:21-
light rain
rain showers
mod rain
rain showers
rain showers
rain showers
mod rain
rain showers
cloud
light rain
rain showers
light rain
light rain
light rain
rain showers
part cloud
rain showers
clear
part cloud
clear
clear
Rain (mm)
439421811-114442-1----
Temp. °C131614161614141413141514141413151513151612
Feels °C (?)9111011121291087911988121212131311
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Donegal

  1. weather stationWind Update Offshore wind has become cross-off at Ballyhiernan Bay (moderate winds from the S at Malin Head 27 km from Ballyhiernan Bay). No surfable waves

    59 minutes ago Ballyhiernan Bay
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View all

Actual: 59 min ago

18 km/h
SSW
Cross-Shore
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Rossnowlagh surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Rossnowlagh at:
surf-forecast.com

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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