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Surf Forecasts:
Rossnowlagh surfForecast / Donegal / Ireland
16 Day Weather and Surf, issued 6 pm Saturday 09 May 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
11.9° C
(Which is 1.3°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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (May 15) at 1AM. The primary swell is predicted to be 1.1m and 9s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Rossnowlagh in the next 16 days are 3.5m 12s and forecast to arrive on Wednesday (May 13) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 15th May) | 3.5ft (1.1m) 9s |
| Best Surf | 1AM (Fri 15th May) | 3.5ft (1.1m) 9s |
| Most Powerful | 7AM (Wed 13th May) | 11ft (3.5m) 12s |
Table - best surf conditions forecast for Rossnowlagh over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Mon night. Very mild (max 11°C on Sun morning, min 6°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the WNW by Tue morning). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Tue afternoon. Very mild (max 13°C on Fri morning, min 7°C on Thu night). Winds decreasing (strong winds from the WNW on Tue night, calm by Thu night). | ||||||||||||||||||||
Sat 9 | Sunday 10 | Monday 11 | Tuesday 12 | Wednesday 13 | Thursday 14 | Friday 15 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
NW 11 | NW 11 | NW 7 | NW 7 | NW 5 | NW 8 | WNW 8 | WNW 9 | WNW 7 | WNW 9 | WNW 10 | WNW 12 | WNW 12 | WNW 11 | WNW 10 | NW 10 | NW 9 | WNW 8 | WNW 8 | WNW 14 | W 12 | |
30 | 30 | 19 | 48 | 31 | 93 | 120 | 208 | 319 | 589 | 1844 | 2928 | 2277 | 1291 | 541 | 499 | 176 | 59 | 24 | 37 | 674 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | cross | cross | cross-on | cross-on | cross | cross-on | on | cross-on | on | on | cross-on | cross-on | cross | cross | cross-on | glassy | cross | cross | cross | cross-on | |
High Tide | 00:21AM2.70m | 1:04PM2.26m | 1:29AM2.76m | 2:19PM2.40m | 2:30AM2.92m | 3:18PM2.63m | 3:23AM3.12m | 4:07PM2.91m | 4:12AM3.33m | 4:52PM3.18m | 4:59AM3.52m | 5:34PM3.43m | 5:46AM3.64m | ||||||||
Low Tide | 5:26PM1.24m | 7:00AM1.24m | 6:49PM1.29m | 8:14AM1.07m | 8:08PM1.20m | 9:08AM0.81m | 9:09PM1.02m | 9:54AM0.53m | 10:01PM0.78m | 10:36AM0.28m | 10:48PM0.52m | 11:17AM0.08m | 11:33PM0.28m | 11:58AM-0.03m | |||||||
 |  |  | |  | | |  | |  |  | | | | | |  |  | | | | |
 | — | — | 5:37 | — | — | 5:35 | — | — | 5:33 | — | — | 5:31 | — | — | 5:30 | — | — | 5:28 | — | — | 5:26 |
 | — | 9:20 | — | — | 9:22 | — | — | 9:23 | — | — | 9:24 | — | — | 9:27 | — | — | 9:29 | — | — | 9:30 | 9:32 |
— | — | — | — | — | — | — | 1 | — | 1 | 4 | 2 | 2 | — | — | — | — | — | — | 4 | — | |
Temp °C | 10 | 7 | 11 | 10 | 9 | 11 | 11 | 10 | 11 | 11 | 9 | 10 | 10 | 8 | 11 | 11 | 8 | 13 | 14 | 12 | 10 |
3 | 2 | 6 | 4 | 5 | 5 | 6 | 6 | 4 | 3 | 2 | 3 | 2 | 2 | 4 | 5 | 4 | 9 | 10 | 9 | 4 | |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 11 | NW 7 | W 10 | W 9 | NW 8 | WNW 8 | — | — | — | — | — | — | WNW 11 | WNW 10 | — | NW 9 | WNW 8 | WNW 8 | WNW 14 | W 12 |
 kJ | 30 | 30 | 19 | 8 | 7 | 93 | 120 | — | — | — | — | — | — | 1291 | 541 | — | 176 | 59 | 24 | 37 | 674 |
Swell 2 Height (m) Direction Period (s) | W 11 | W 11 | W 10 | NNW 10 | — | W 9 | W 9 | — | — | — | — | — | — | — | — | — | — | W 9 | W 9 | NW 7 | — |
| kJ | 21 | 20 | 8 | 10 | — | 6 | 6 | — | — | — | — | — | — | — | — | — | — | 2 | 6 | 8 | — |
Swell 3 Height (m) Direction Period (s) | — | — | NNW 11 | — | — | W 15 | W 14 | — | — | — | — | — | — | — | — | — | — | — | N 8 | W 9 | — |
| kJ | — | — | 11 | — | — | 4 | 15 | — | — | — | — | — | — | — | — | — | — | — | 1 | 14 | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | N 4 | N 2 | NW 7 | NW 5 | — | — | WNW 9 | WNW 7 | WNW 9 | WNW 10 | WNW 12 | WNW 12 | — | NNW 4 | NW 10 | — | — | — | — | — |
| kJ | 23 | 12 | 1 | 48 | 31 | — | — | 208 | 319 | 589 | 1844 | 2928 | 2277 | — | 34 | 499 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 825 | 514 | 225 | 468 | 425 | 184 | 71 | 278 | 488 | 453 | 425 | 494 | 475 | 182 | 834 | 699 | 0 | 9 | 57 | 9 | 123 |
Best forecast wave conditions in Donegal | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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 16 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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