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Surf Forecasts:

Trá Na Rosan surfForecast / Donegal / Ireland

information circle16 Day Weather and Surf, issued 5 pm Tuesday 17 Mar 2026 IST
Forecast update in hr  min  s Forecast update imminent
Trá Na Rosan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trá Na Rosan sea temperature is
8.0° C
 (Which is slightly cooler than normal)

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 Wednesday (Mar 18) at 6AM. The primary swell is predicted to be 1.5m and 16s period with a secondary swell of 2.0m and 12s. 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 3.0m 16s and forecast to arrive on Saturday (Mar 21) at 12PM. Winds are predicted to be glassy at the time the swell arrives.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Wed 18th Mar)5ft (1.5m) 16s
Best Surf 9AM (Sat 21st Mar)10ft (3.0m) 16s
Most Powerful12PM (Sat 21st Mar)10ft (3.0m) 16s

Table - best surf conditions forecast for Trá Na Rosan over the next 16 days.

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

Short Range Forecast Light rain (total 3mm), mostly falling on Tue afternoon. Very mild (max 14°C on Thu afternoon, min 7°C on Tue night). Winds decreasing (fresh winds from the SW on Tue afternoon, calm by Wed morning).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sun afternoon. Very mild (max 11°C on Fri afternoon, min 6°C on Sat night). Winds increasing (calm on Sat morning, fresh winds from the WNW by Sun night).

Tue
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
2
3
4
3
3
3
3
2
2
1
4
5
3
4
2
0
0
1
2
5
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
3
WNW
2.3
WNW
2.5
WNW
2.3
WNW
2.1
NW
1.8
NW
1.5
NW
1.2
NW
1
WNW
1.4
NW
2.1
NW
3
NW
3
NW
3
NW
2.3
NW
2.4
WNW
3.5
NW
3.5
NW
3.5
NW
3.5
NW
2.5
NW
Period(s) (?)131216141312121211131616161514131211111312
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2844149929612118145795665739324763220094117447132242050196532882483320040551789
Wind
(km/h)
30
SW
20
SSW
10
SSE
10
NE
15
NE
10
E
10
E
15
SSE
10
S
10
NW
5
S
5
SSW
10
NW
10
S
25
SSW
35
WSW
35
W
35
W
25
SW
20
S
45
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		offcrosscrosscross-
off		cross-
off		offoffcross-
on		offcross-
off		onoffcross-
off		crosscross-
on		crosscross-
off		offcross-
off
High Tide
/ height (m)
5:20PM
3.06
5:34AM
3.49
5:52PM
3.25
6:06AM
3.67
6:25PM
3.39
6:40AM
3.74
6:59PM
3.46
7:15AM
3.71
7:35PM
3.44
7:53AM
3.56
8:13PM
3.33
8:34AM
3.31
8:56PM
3.14
9:22AM
2.98
Low Tide
/ height (m)
11:15PM
0.23
11:43AM
0.07
11:48PM
0.04
12:15PM
-0.10
12:22AM
-0.08
12:48PM
-0.16
12:57AM
-0.11
1:23PM
-0.11
1:35AM
-0.03
2:00PM
0.06
2:16AM
0.15
2:40PM
0.31
3:03AM
0.42
Tue
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Sunrise--6:39--6:37--6:35--6:31--6:28--6:26--6:24
Sunset6:37--6:38--6:40--6:43--6:45--6:46--6:49--
light rain
part cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
light rain
cloud
cloud
cloud
mod rain
mod rain
Rain (mm)
3--------------2---87
Temp. °C109999101412111110999997881111
Feels °C (?)437647119108787611-3-1132
  • 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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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.

View detailed surf forecast for Trá Na Rosan at:
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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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