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Surf Forecasts:
Rossnowlagh surfForecast / Donegal / Ireland
48hr Weather and Surf, issued 6 pm Saturday 18 Apr 2026 ISTForecast 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
9.0° C
(Which is slightly cooler than normal)How big are the waves at Rossnowlagh today?
The current surf forecast for Rossnowlagh at 10PM is: 1.1m 9s primary swell from a West direction and 0.7m 9s secondary swell from a Northwest direction (forecast issued at 06:00pm April 18). The wind direction is predicted to be onshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | - | - |
| Afternoon (18 Apr) | 5.5ft (1.7m) | 10s |
| Evening (18 Apr) | 3.5ft (1.1m) | 9s |
Table - waves today at Rossnowlagh. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||||||||
| 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 9 | 9 | 9 | 8 | 10 | 8 | 14 | 10 | 9 | 12 | 12 | 11 | 11 | 13 | 14 | 14 | 13 | 12 | 13 | 15 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 512 | 273 | 198 | 127 | 119 | 71 | 122 | 88 | 113 | 101 | 121 | 192 | 246 | 206 | 198 | 423 | 442 | 449 | 423 | 309 | 389 | 551 | 536 | 500 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | on | glass | glass | glass | glass | glass | cross | cross | off | off | off | off | off | off | glass | cross- off | off | off | off | off | off | off |
High Tide / height (m) | 7:20PM 3.72 | 7:37AM 3.79 | 8:01PM 3.72 | 8:21AM 3.60 | 8:44PM 3.62 | 9:10AM 3.31 | ||||||||||||||||||
Low Tide / height (m) | 1:03PM -0.17 | 1:20AM -0.03 | 1:42PM -0.09 | 2:03AM 0.02 | 2:22PM 0.10 | 2:50AM 0.18 | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:16 | - | - |
| Sunset | - | 8:39 | - | - | - | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:44 | - | - | - | - | - | - |
 | |  | |  |  | |  | | | | | | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 9 | 8 | 7 | 7 | 6 | 8 | 10 | 10 | 11 | 9 | 8 | 7 | 6 | 8 | 12 | 13 | 11 | 9 | 7 | 6 | 5 | 8 | 11 |
| Feels °C (?) | 4 | 4 | 5 | 5 | 5 | 4 | 6 | 8 | 7 | 8 | 5 | 5 | 4 | 3 | 4 | 9 | 10 | 6 | 5 | 3 | 2 | 0 | 2 | 4 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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.
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