Bunatrahir Bay surfForecast / Mayo and Achill Island / Ireland

information circle12 Day Weather and Surf, issued 12 am Wednesday 09 Jul 2025 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
15.0° C
(Which is slightly warmer than usual)


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 Wednesday (Jul 09) at 7AM. The primary swell is predicted to be 1.4m and 7s period with a secondary swell of 0.1m and 15s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Bunatrahir Bay in the next 12 days are 1.7m 9s and forecast to arrive on Thursday (Jul 10) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Jul 12) at 10AM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Wed 9th Jul)4.5ft (1.4m) 7s
Best Surf 4PM (Wed 9th Jul)4.5ft (1.4m) 8s
Most Powerful 4PM (Thu 10th Jul)5.5ft (1.7m) 9s

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

Updates in  hr  min  s Forecast update imminent
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sun
20
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.1
W
1.4
WNW
1.4
W
1.4
W
1.5
W
1.7
W
1.5
W
1.2
W
1.3
W
1.3
W
1.2
W
1.1
W
1
WSW
1.1
WSW
0.8
WNW
0.9
WNW
0.8
WNW
0.6
WNW
0.5
W
0.5
W
0.5
W
0.7
W
0.7
WNW
0.7
WNW
0.8
NNE
0.5
W
0.4
WNW
0.3
W
0.4
WSW
0.6
W
0.6
WSW
0.6
WSW
0.6
WSW
0.5
WSW
0.5
W
0.5
W
Period(s) (?)78898999898888109888778985771099988888
Wave
Graph
(?)Metric surfscale
Energy (?)1522362862933214503492562662522271931682042391721015344445411189755930214269111967677505344
Wind
(km/h)
15
WSW
15
WSW
20
WSW
10
SSW
15
SSW
15
SW
10
SSW
15
S
10
SSW
5
SSE
20
SSE
20
S
0
SSW
15
SE
20
SE
20
SE
15
ESE
20
ESE
10
ESE
15
ESE
10
E
10
ESE
15
ESE
5
SSE
5
ESE
5
SSW
10
E
5
NE
10
NNE
15
N
5
N
15
NE
20
N
5
NNW
10
NNE
15
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
offoffcross-
off
cross-
off
offcross-
off
offcross-
off
offglasscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
glassoffcrossglasscross-
on
onglasscross-
on
onglasscross-
on
on
High Tide
/ height (m)
5:32AM
2.67
5:57PM
3.00
6:12AM
2.77
6:36PM
3.16
6:51AM
2.84
7:14PM
3.30
7:29AM
2.88
7:51PM
3.40
8:08AM
2.89
8:28PM
3.46
8:47AM
2.86
9:06PM
3.47
9:30AM
2.82
9:46PM
3.41
10:16AM
2.75
10:30PM
3.28
11:07AM
2.68
11:21PM
3.11
12:05PM
2.62
12:22AM
2.93
1:13PM
2.61
1:35AM
2.78
2:27PM
2.68
Low Tide
/ height (m)
11:26PM
0.82
11:33AM
0.66
12:07AM
0.68
12:11PM
0.54
12:46AM
0.57
12:47PM
0.44
1:25AM
0.47
1:22PM
0.37
2:03AM
0.40
1:58PM
0.35
2:41AM
0.36
2:35PM
0.38
3:22AM
0.36
3:15PM
0.46
4:04AM
0.39
3:59PM
0.59
4:52AM
0.47
4:50PM
0.74
5:45AM
0.59
5:53PM
0.88
6:49AM
0.70
7:11PM
0.95
8:00AM
0.76
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sun
20
Sunrise-5:13--5:16--5:16--5:18--5:18--5:20--5:22--5:22--5:24--5:26--5:26--5:28-
Sunset--10:08--10:07--10:07--10:07--10:06--10:04--10:02--10:01--10:00--10:00--9:58--9:57
cloudclearclearpart cloudpart cloudpart cloudclearclearclearclearclearclearcloudcloudcloudpart cloudclearclearrain showersrain showersclearrain showersrain showerslight rainpart cloudlight rainrain showersclearpart cloudclearclearclearclearclearclearclear
Rain (mm)
------------------12-112-11---------
Temp. °C141919162021182123202426212427242627222325222019171817171817151819161817
Feels °C (?)121716151819182021212123232225232425212124211920181817171614151616151614

Short Range Forecast: Mostly dry. Warm (max 23°C on Fri afternoon, min 14°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Sun afternoon, min 15°C on Fri night). Wind will be generally light.

Days 6-9 Weather Summary Light rain (total 9mm), mostly falling on Tue morning. Warm (max 25°C on Tue afternoon, min 16°C on Wed night). Wind will be generally light.

Long Range Forecast: Mostly dry. Very mild (max 19°C on Sat afternoon, min 14°C on Fri night). Wind will be generally light.

  • 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 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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