Trá Na Rosan Surf Break

Lat Long: 55.23° N 7.82° W

Trá Na Rosan Surf Forecast and Surf Report

Issued: 6 pm 21 Sep 2026 (local time)

Forecast update in  hr  min

Today's Trá Na Rosan sea temperature is
15.1°C
1.7° 

Trá Na Rosan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Trá Na Rosan surf forecast from 21 Sep 2026:

  • Best quality surf: Saturday 26 Sep, 7AM (local time) - 7.5ft (2.3m), 12s period, WNW swell with offshore winds.
  • Most powerful swell: Friday 25 Sep, 4AM (local time) - 11ft (3.5m), 16s period, WNW swell with 6,803 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 22 Sep, 4AM (local time) - 5ft (1.6m), 10s period with WNW 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 Tuesday (Sep 22) at 4AM. The primary swell is predicted to be 1.6m and 10s period with a secondary swell of 0.1m and 7s. 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 3.5m 16s and forecast to arrive on Friday (Sep 25) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Sep 27) at 1AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Tue 22nd Sep)5ft (1.6m) 10s
Best Surf 7AM (Sat 26th Sep)7.5ft (2.3m) 12s
Most Powerful 4AM (Fri 25th Sep)11ft (3.5m) 16s

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


Short Range Forecast

Light rain (total 7mm), mostly falling on Tue night. Warm (max 21°C on Mon afternoon, min 10°C on Wed night). Winds increasing (calm on Wed afternoon, strong winds from the SSE by Thu morning).

Days 5-7 Weather Summary

Moderate rain (total 16mm), heaviest on Sun morning. Very mild (max 16°C on Thu afternoon, min 11°C on Sat night). Mainly fresh winds.

Mon
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
2
3
0
2
2
0
0
4
3
2
3
2
1
1
2
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
WNW
11
1.4
WNW
10
1.6
WNW
11
1.4
WNW
11
2.1
WNW
14
2
WNW
13
1.7
WNW
12
1.5
WNW
11
1.3
WNW
10
1.5
WNW
10
3
WNW
16
3.5
WNW
16
3
WNW
14
2.3
WNW
12
2.3
WNW
12
2.3
WNW
11
1.8
WNW
11
1.7
WNW
10
1.7
WNW
10
1.6
WNW
10
Wave Graph
Metric surfscale
Energy kJ
476
394
611
478
1797
1289
850
543
320
458
5220
5747
3501
1553
1452
1279
716
586
586
533
Wind (km/h)
20
SW
20
S
10
W
10
W
10
NNW
20
NW
10
NW
20
SSE
40
SSE
30
S
25
SW
35
SW
30
SW
25
S
25
S
30
SSW
30
SW
25
SSE
30
SW
20
S
Wind State
cross-off
cross-off
cross-on
cross
on
cross-on
on
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
High Tide
4:17AM2.33m
4:38PM2.70m
4:57AM2.56m
5:13PM2.96m
5:30AM2.79m
5:44PM3.19m
6:01AM3.00m
6:14PM3.40m
6:32AM3.19m
6:45PM3.55m
7:03AM3.32m
7:17PM3.62m
Low Tide
10:12PM1.15m
10:14AM1.03m
10:52PM0.88m
10:53AM0.77m
11:25PM0.61m
11:26AM0.52m
11:54PM0.36m
11:57AM0.30m
00:23AM0.15m
12:28PM0.13m
00:53AM0.01m
1:00PM0.02m
1:24AM-0.06m
clear
part cloud
light rain
light rain
rain showers
clear
clear
part cloud
cloud
light rain
light rain
clear
cloud
cloud
clear
rain showers
rain showers
rain showers
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:15
7:16
7:18
7:20
7:22
7:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:34
7:30
7:29
7:25
7:22
7:21
7:17
 mm
2
1
4
3
1
1
2
9
1
Temp °C
21
19
14
13
12
12
12
12
15
16
13
13
14
13
16
16
13
12
13
11
Feels °C
19
17
13
12
11
8
10
9
9
11
7
6
8
8
10
10
7
8
6
6
  • 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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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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