Trá Na Rosan Surf Break

Lat Long: 55.23° N 7.82° W

Trá Na Rosan Surf Forecast and Surf Report

Issued: 6 pm 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Trá Na Rosan sea temperature is
16.3°C
2.0° 

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 26 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 1AM (local time) - 1.5ft (0.5m), 10s period, WNW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 1 Sep, 7AM (local time) - 6.5ft (2.0m), 9s period, WNW swell with 644 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 1AM (local time) - 1.5ft (0.5m), 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 Thursday (Aug 27) at 1AM. The primary swell is predicted to be 0.5m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Trá Na Rosan in the next 16 days are 2.0m 9s and forecast to arrive on Tuesday (Sep 01) at 7AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 8s period and expected on Wednesday (Sep 02) at 10PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Thu 27th Aug)1.5ft (0.5m) 10s
Best Surf 1AM (Thu 27th Aug)1.5ft (0.5m) 10s
Most Powerful 7AM (Tue 1st Sep)6.5ft (2.0m) 9s

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


Short Range Forecast

Mostly dry. Very mild (max 19°C on Thu afternoon, min 14°C on Fri morning). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Mon afternoon. Very mild (max 16°C on Sun morning, min 13°C on Sat night). Winds increasing (calm on Sun night, fresh winds from the WSW by Mon afternoon).

Wed
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
1
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
W
7
0.5
WNW
10
0.6
WNW
9
0.5
WNW
9
0.4
WNW
8
0.6
NNW
5
1
NNW
6
1
NNW
6
0.9
NNW
7
0.9
NNW
7
1
NNW
7
0.9
NNW
7
0.8
NNW
7
0.8
N
7
1
WNW
6
1.3
W
10
1.6
W
6
1.8
WNW
9
1.6
WNW
8
1
WNW
8
Wave Graph
Metric surfscale
Energy kJ
17
54
64
44
22
18
68
73
62
66
108
86
62
66
72
314
212
497
285
137
Wind (km/h)
20
ENE
10
E
10
E
25
ENE
10
NE
15
NW
20
NW
10
NNW
15
NNE
15
NNW
15
W
10
SSE
10
SE
10
W
25
WSW
30
SW
25
W
30
NW
20
NW
10
WNW
Wind State
cross
cross-off
cross-off
cross
cross-on
on
cross-on
on
cross-on
on
cross
off
cross-off
cross-on
cross
cross-off
cross-on
on
cross-on
cross-on
High Tide
6:19PM3.18m
6:32AM2.96m
6:49PM3.36m
7:03AM3.09m
7:18PM3.49m
7:33AM3.19m
7:48PM3.55m
8:04AM3.23m
8:19PM3.54m
8:35AM3.22m
8:51PM3.45m
9:09AM3.15m
9:27PM3.29m
Low Tide
00:27AM0.46m
12:29PM0.33m
00:57AM0.28m
12:59PM0.18m
1:27AM0.15m
1:29PM0.09m
1:56AM0.08m
2:00PM0.07m
2:27AM0.09m
2:33PM0.13m
2:59AM0.17m
3:08PM0.25m
3:35AM0.33m
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
light rain
light rain
cloud
light rain
thunderstorm
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:28
6:30
6:31
6:33
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:39
8:37
8:35
8:32
8:30
8:28
8:24
 mm
2
1
5
4
Temp °C
18
17
18
19
16
15
14
14
15
15
15
16
15
14
14
14
14
13
13
13
Feels °C
16
16
16
16
14
13
11
12
13
13
12
14
14
14
9
9
8
6
8
10
  • 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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