Surf Forecasts:
Trá Na Rosan surf forecast from 14 Sep 2026:
- Best quality surf: Sunday 20 Sep, 7PM (local time) - 11ft (3.5m), 14s period, NW swell with offshore winds.
- Most powerful swell: Thursday 17 Sep, 7PM (local time) - 15ft (4.5m), 14s period, NW swell with 8,431 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 4AM (local time) - 2.5ft (0.8m), 9s period with NW swell.
Best Forecast Surf Conditions for Trá Na Rosan this week:
The surf forecast for Trá Na Rosan over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 14) at 4AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.5m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Trá Na Rosan in the next 16 days are 4.5m 14s and forecast to arrive on Thursday (Sep 17) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 9s period and expected on Monday (Sep 14) at 7AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Mon 14th Sep) | 2.5ft (0.8m) 9s |
| Best Surf | 7PM (Sun 20th Sep) | 11ft (3.5m) 14s |
| Most Powerful | 7PM (Thu 17th Sep) | 15ft (4.5m) 14s |
Table - best surf conditions forecast for Trá Na Rosan over the next 16 days.
Short Range ForecastLight rain (total 7mm), mostly falling on Tue morning. Very mild (max 18°C on Mon morning, min 12°C on Wed morning). Winds increasing (light winds from the S on Sun night, strong winds from the WNW by Tue night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Wed night. Very mild (max 16°C on Fri afternoon, min 13°C on Wed night). Winds decreasing (strong winds from the W on Thu morning, moderate winds from the S by Fri afternoon). | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NNW 13 | W 8 | W 9 | W 7 | WNW 9 | WNW 12 | NW 11 | WNW 10 | W 8 | WNW 10 | WNW 13 | NW 14 | NW 13 | NW 12 | WNW 11 | WNW 10 | WNW 10 | WNW 12 | NW 14 | NW 14 | NW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 133 | 144 | 444 | 440 | 542 | 1508 | 1031 | 574 | 632 | 1588 | 6025 | 7418 | 3799 | 1968 | 961 | 720 | 1086 | 3471 | 5319 | 4729 | 2740 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross | cross-on | cross-on | cross-on | cross-on | cross-off | cross-on | cross | cross-on | cross-on | cross-off | cross-off | cross | cross | cross | cross | cross-on | cross | cross-off |
High Tide | 8:35AM3.30m | 8:52PM3.38m | 9:07AM3.16m | 9:24PM3.10m | 9:40AM2.96m | 9:58PM2.79m | 10:16AM2.73m | 10:36PM2.49m | 11:02AM2.48m | 11:31PM2.22m | 12:19PM2.27m | 1:15AM2.06m | 2:25PM2.25m | 3:15AM2.13m | |||||||
Low Tide | 2:34PM0.12m | 2:56AM0.26m | 3:09PM0.35m | 3:28AM0.52m | 3:46PM0.63m | 4:01AM0.80m | 4:26PM0.93m | 4:41AM1.08m | 5:20PM1.22m | 5:41AM1.31m | 6:56PM1.42m | 7:33AM1.42m | 9:03PM1.37m | ||||||||
 |  |  | |  |  | | | |  | | | | | | | | | | |  | |
 | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — | 7:09 | — | — | 7:11 | — | — |
 | — | 7:52 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — | — | 7:42 | — | — | 7:38 | — | — | 7:36 | — |
mm | — | 1 | 2 | 4 | — | — | — | — | 5 | 2 | — | — | — | — | — | — | — | — | — | — | 5 |
Temp °C | 18 | 18 | 16 | 14 | 14 | 13 | 13 | 15 | 14 | 13 | 13 | 14 | 15 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 17 |
Feels °C | 16 | 16 | 11 | 8 | 8 | 6 | 8 | 9 | 9 | 4 | 4 | 7 | 9 | 11 | 9 | 6 | 6 | 5 | 10 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | W 8 | N 12 | NNW 11 | NNW 11 | N 10 | NW 11 | WNW 10 | N 8 | N 8 | — | — | NW 13 | NW 12 | WNW 11 | — | — | — | — | NW 14 | NW 13 |
| kJ | 118 | 144 | 71 | 40 | 38 | 17 | 1031 | 574 | 13 | 12 | — | — | 3799 | 1968 | 961 | — | — | — | — | 4729 | 2740 |
Swell 2 Height (m) Direction Period (s) | NNW 13 | N 12 | — | — | — | — | N 9 | N 9 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 133 | 113 | — | — | — | — | 7 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | S 2 | W 9 | W 7 | WNW 9 | WNW 12 | — | — | W 8 | WNW 10 | WNW 13 | NW 14 | — | — | — | WNW 10 | WNW 10 | WNW 12 | NW 14 | — | — |
| kJ | — | 1 | 444 | 440 | 542 | 1508 | — | — | 632 | 1588 | 6025 | 7418 | — | — | — | 720 | 1086 | 3471 | 5319 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 140 | 416 | 794 | 478 | 147 | 140 | 344 | 788 | 788 | 446 | 44 | 8 | 44 | 344 | 361 | 344 | 122 | 24 | 57 |
Best forecast wave conditions in Donegal | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Trá Na Rosan 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 Trá Na Rosan Surf forecast
The above surf forecast table for Trá Na Rosan provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Trá Na Rosan can be found by selecting the local surf guide option on the grey menu. Our Trá Na Rosan 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 (Trá Na Rosan) 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 Trá Na Rosan 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.
Are you planning a holiday in Donegal? If you are looking for accommodation near Trá Na Rosan, camping, hotels and holiday cottages in Donegal, consider staying in Letterkenny which is 31 km (19 miles) away. Other places in and around Donegal where you can find information about places to rent, and car hire include Malin Head which is 35 km (22 miles) away, Derry, Derry and Londonderry County Borough.
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