Bunatrahir Bay Surf Break

Lat Long: 54.29° N 9.39° W

Bunatrahir Bay Surf Forecast and Surf Report

Issued: 6 pm 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's Bunatrahir Bay sea temperature is
15.6°C
1.5° 

Bunatrahir Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Bunatrahir Bay surf forecast from 17 Sep 2026:

  • Best quality surf: Thursday 17 Sep, 10PM (local time) - 18ft (5.5m), 14s period, WNW swell with cross-shore winds.
  • Most powerful swell: Thursday 17 Sep, 10PM (local time) - 18ft (5.5m), 14s period, WNW swell with 13,167 kJ wave energy.
  • Next surfable swell (1★+): Thursday 17 Sep, 10PM (local time) - 18ft (5.5m), 14s period with WNW swell.

Best Forecast Surf Conditions for Bunatrahir Bay this week:

The surf forecast for Bunatrahir Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 17) at 10PM. The primary swell is predicted to be 5.5m and 14s period. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Bunatrahir Bay in the next 16 days are 5.5m 14s and forecast to arrive on Thursday (Sep 17) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Friday (Sep 25) at 1AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Thu 17th Sep)18ft (5.5m) 14s
Best Surf10PM (Thu 17th Sep)18ft (5.5m) 14s
Most Powerful10PM (Thu 17th Sep)18ft (5.5m) 14s

Table - best surf conditions forecast for Bunatrahir Bay over the next 16 days.


Short Range Forecast

Light rain (total 6mm), mostly falling on Fri morning. Very mild (max 16°C on Fri morning, min 12°C on Sat night). Winds decreasing (strong winds from the WSW on Fri morning, light winds from the WSW by Sun morning).

Days 5-7 Weather Summary

Some drizzle, heaviest during Sun night. Warm (max 20°C on Mon afternoon, min 12°C on Sun night). Wind will be generally light.

Thu
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
!
!
!
!
0
!
!
!
!
4
3
2
3
3
3
4
4
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
6
WNW
14
5.5
WNW
14
4
WNW
13
4.5
W
12
3.5
W
11
4
W
11
4.5
WNW
12
4.5
WNW
12
3.5
WNW
12
3.5
WNW
12
2.5
WNW
12
2.4
WNW
12
1.9
WNW
11
1.9
W
10
2.1
W
11
1.8
W
11
3
W
14
2.5
W
13
2.2
W
12
1.9
WNW
11
Wave Graph
Metric surfscale
Energy kJ
14633
10430
5770
4866
2938
3957
5092
5137
3754
2919
2044
1462
846
722
1037
762
2987
2124
1412
870
Wind (km/h)
35
W
30
WSW
35
SSW
40
WSW
30
WSW
35
W
30
WSW
30
W
10
WSW
15
SSW
20
SSW
20
SW
20
SW
10
S
10
S
5
WSW
5
SSE
10
SW
15
NNE
10
ESE
Wind State
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross
cross-off
cross-off
off
cross-off
cross-off
off
off
cross-off
glassy
cross-off
on
cross-off
High Tide
10:19PM2.46m
10:44AM2.53m
11:13PM2.20m
11:55AM2.34m
00:45AM2.03m
1:41PM2.30m
2:39AM2.07m
3:11PM2.46m
3:48AM2.25m
4:04PM2.71m
4:32AM2.48m
4:42PM2.97m
Low Tide
4:04PM0.91m
4:13AM1.04m
4:57PM1.18m
5:06AM1.27m
6:30PM1.37m
6:48AM1.41m
8:39PM1.33m
8:41AM1.31m
9:48PM1.13m
9:43AM1.10m
10:30PM0.88m
10:24AM0.87m
11:03PM0.62m
part cloud
part cloud
light rain
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
clear
clear
clear
part cloud
cloud
cloud
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
7:16
7:18
7:20
7:20
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:50
7:46
7:45
7:42
7:39
7:37
7:35
 mm
5
1
1
Temp °C
14
13
16
16
16
14
14
13
14
15
17
19
20
17
18
18
16
15
12
11
Feels °C
7
7
10
10
11
7
7
7
11
12
15
16
17
17
18
18
17
15
9
8
  • 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 Bunatrahir Bay Surf forecast

The above surf forecast table for Bunatrahir Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Bunatrahir Bay can be found by selecting the local surf guide option on the grey menu. Our Bunatrahir Bay 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 (Bunatrahir Bay) 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 Bunatrahir Bay 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 Mayo and Achill Island? If you are looking for accommodation near Bunatrahir Bay, camping, hotels and holiday cottages in Mayo and Achill Island, consider staying in Ballina which is 24 km (15 miles) away. Other places in and around Mayo and Achill Island where you can find information about places to rent, and car hire include Belmullet which is 41 km (25 miles) away, Westport, Sligo and Claremorris.

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