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Surf Forecasts:

Bunatrahir Bay surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 5 pm Sunday 18 Jan 2026 IST
Forecast update in hr  min  s Forecast update imminent
Bunatrahir Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Bunatrahir Bay sea temperature is
9.5° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Bunatrahir Bay this week:

The surf forecast for Bunatrahir Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jan 19) at 12AM. The primary swell is predicted to be 1.7m and 10s period with a secondary swell of 0.2m and 7s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Bunatrahir Bay in the next 12 days are 5.0m 18s and forecast to arrive on Saturday (Jan 24) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 12s period and expected on Friday (Jan 23) at 9AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Mon 19th Jan)5.5ft (1.7m) 10s
Best Surf 9AM (Mon 19th Jan)15ft (4.5m) 17s
Most Powerful 9AM (Sat 24th Jan)16ft (5.0m) 18s

Table - best surf conditions forecast for Bunatrahir Bay over the next 12 days.

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

Short Range Forecast Moderate rain (total 18mm), heaviest on Tue morning. Mild temperatures (max 7°C on Tue afternoon, min 2°C on Mon night). Winds increasing (calm on Mon afternoon, fresh winds from the E by Tue morning).

Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Thu night. Mild temperatures (max 7°C on Wed afternoon, min 4°C on Thu night). Winds increasing (light winds from the NNE on Wed night, strong winds from the ESE by Fri night).

Sun
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
2
!
!
!
0
!
3
3
0
2
4
4
2
3
!
0
!
!
!
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
W
1.7
W
4.5
WNW
4.5
WNW
4
WNW
4
WNW
3.5
WNW
3
WNW
2.4
W
2.1
W
1.8
WNW
3
W
2.5
W
2.2
W
1.5
W
4
WSW
4
W
5
W
4.5
W
3.5
W
2.5
W
Period(s) (?)101017161615141413121216151312141518171614
Wave
Graph
(?)Metric surfscale
Energy kJ (?)23059610808966188286228448529301843127182847843064165469255508032149711163355353005
Wind
(km/h)
20
SSE
20
SSE
5
W
0
SW
10
SSE
25
ENE
20
SE
25
ESE
20
SE
25
E
5
NNE
10
NW
5
SSE
30
SE
15
SSE
35
SE
50
ESE
40
SE
35
ESE
15
E
10
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		offglassglasscross-
off		cross-
on		cross-
off		cross-
off		cross-
off		crossoncross-
on		cross-
off		cross-
off		offcross-
off		cross-
off		cross-
off		cross-
off		crosscross
High Tide
/ height (m)
5:44PM
2.85
6:04AM
3.33
6:18PM
2.91
6:37AM
3.45
6:52PM
2.94
7:10AM
3.51
7:26PM
2.94
7:43AM
3.51
8:03PM
2.91
8:18AM
3.45
8:42PM
2.84
8:56AM
3.32
9:25PM
2.75
9:39AM
3.13
Low Tide
/ height (m)
11:39PM
0.42
12:15PM
0.44
12:11AM
0.33
12:49PM
0.36
12:43AM
0.29
1:22PM
0.31
1:16AM
0.30
1:56PM
0.31
1:50AM
0.37
2:32PM
0.34
2:28AM
0.49
3:12PM
0.43
3:11AM
0.65
Sun
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunrise--8:45--8:44--8:42--8:41--8:40--8:38--8:37
Sunset4:49--4:51--4:52--4:53--4:55--4:58--5:00--
cloud
mod rain
cloud
part cloud
part cloud
mod rain
rain showers
light rain
cloud
part cloud
part cloud
part cloud
clear
light rain
rain showers
clear
rain showers
part cloud
clear
part cloud
cloud
Rain (mm)
-6---813-----52-4----
Temp. °C566645766767754567756
Feels °C (?)-11441-321-11344-3-1-4-4-2-1-23
  • 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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Latest Updates

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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 Bunatrahir Bay 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 Bunatrahir Bay at:
surf-forecast.com

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 12 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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