Bunatrahir Bay Surf Forecast

/ Mayo and Achill Island (14 surf breaks) /

Ireland (149 surf breaks) / Lat Long: (54.29° N 9.39° W)

Surf Forecasts:

Bunatrahir Bay surfForecast / Mayo and Achill Island / Ireland

12 Day Weather and Surf, issued 12 am Thursday 23 Oct 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 13.7° C
(Which is 1.3°C warmer than 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 Thursday (Oct 23) at 10PM. The primary swell is predicted to be 5.0m and 13s period with a secondary swell of 4.0m and 10s. 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 5.5m 13s and forecast to arrive on Thursday (Oct 23) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Oct 29) at 3PM.

Wave Type	Time (IST) & Date	Wave Height & Period
Next good surf (1 star+)	10PM (Thu 23rd Oct)	16ft (5.0m) 13s
Best Surf	10PM (Thu 23rd Oct)	16ft (5.0m) 13s
Most Powerful	4PM (Thu 23rd Oct)	18ft (5.5m) 13s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Moderate rain (total 16mm), heaviest on Thu night. Very mild (max 12°C on Fri morning, min 8°C on Thu afternoon). Winds increasing (light winds from the N on Wed night, strong winds from the W by Thu night).										Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Sun afternoon. Very mild (max 13°C on Sun night, min 10°C on Sat night). Winds decreasing (fresh winds from the NW on Sat night, light winds from the SW by Tue afternoon).
		Thursday 23			Friday 24			Saturday 25			Sunday 26			Monday 27			Tuesday 28			Wed 29
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM
Rating (10 max)	0	0	0	!	0	0	0	0	0	0	0	0	1	0	1	!	!	!	4	2	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	N	NNW	NW	NNW	NNW	NNW	N	N	N	NNW	NW	WNW	WNW	WNW	WNW	WNW	WNW	WNW	W	W	W
Period(s) (?)	12	12	13	13	11	9	11	10	9	8	8	8	9	9	9	10	10	11	12	11	10
Wave Graph (?)
kJ (?)	2815	3811	10770	5308	2766	2581	4510	2508	1487	903	392	843	1218	913	1586	2199	3822	4432	2768	1018	783
Wind (km/h)	N	WNW	W	WSW	N	N	N	NNW	NNW	NW	NW	W	WNW	W	W	WSW	W	W	S	SE	SE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	on	cross- on	cross	cross- off	on	on	on	on	on	cross- on	cross- on	cross	cross	cross	cross	cross- off	cross	cross	off	cross- off	cross- off
High Tide / height (m)		7:14AM 3.26		7:26PM 3.12	7:43AM 3.21		7:57PM 2.96	8:14AM 3.10		8:29PM 2.77	8:47AM 2.94		9:03PM 2.56	9:26AM 2.77		9:43PM 2.35	10:16AM 2.60		10:40PM 2.17	11:24AM 2.49
Low Tide / height (m)	12:58AM 0.25		1:16PM 0.34	1:25AM 0.35		1:47PM 0.43	1:54AM 0.49		2:20PM 0.58	2:24AM 0.65		2:55PM 0.78	2:56AM 0.82		3:36PM 1.00	3:34AM 1.00		4:31PM 1.19		4:27AM 1.17	5:56PM 1.28

		Thursday 23			Friday 24			Saturday 25			Sunday 26			Monday 27			Tuesday 28			Wed 29
Sunrise	-	8:19	-	-	8:22	-	-	8:23	-	-	8:26	-	-	8:27	-	-	8:29	-	-	8:30	-
Sunset	-	-	6:22	-	-	6:20	-	-	6:17	-	-	6:15	-	-	6:14	-	-	6:10	-	-	6:08

Rain (mm)	1	1	2	6	1	2	2	1	-	-	-	2	3	-	-	-	-	-	-	-	2
Temp. °C	10	9	9	11	12	11	10	10	10	11	11	12	13	13	13	12	13	12	11	11	12
Feels °C (?)	6	1	0	7	5	2	1	2	2	3	7	6	7	7	7	6	7	8	9	5	5

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Mayo and Achill Island

Wind Update Continuing clean conditions at Bunatrahir Bay (calm at Ballina 28 km from Bunatrahir Bay). 3.7m 12s groundswell from the NNW with a 0.8m 13s groundswell from the WSW. 2 swells combining so expect closeout sets.
45 minutes ago Bunatrahir Bay

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28 km away, 45 min ago

2 km/h

NNE

0.0

13.7

Air / Water (°C)

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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.

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.