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Bunatrahir Bay Surf Forecast
/ Mayo and Achill Island (14 surf breaks) /
Surf Forecasts:
Bunatrahir Bay surfForecast / Mayo and Achill Island / Ireland
12 Day Weather and Surf, issued 11 pm Thursday 13 Nov 2025 IST
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 (Nov 17) at 9PM. The primary swell is predicted to be 0.5m and 12s period with a secondary swell of 0.5m and 6s. Another secondary swell of 0.5m and 7s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Bunatrahir Bay in the next 12 days are 4.0m 11s and forecast to arrive on Friday (Nov 14) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 9s period and expected on Friday (Nov 21) at 12AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 17th Nov) | 1.5ft (0.5m) 12s |
| Best Surf | 6PM (Tue 18th Nov) | 6ft (1.9m) 12s |
| Most Powerful | 3AM (Fri 14th Nov) | 13ft (4.0m) 11s |
Table - best surf conditions forecast for Bunatrahir Bay over the next 12 days.
Short Range Forecast Light rain (total 6mm), mostly falling on Thu night. Mild temperatures (max 9°C on Sat afternoon, min 6°C on Thu night). Winds decreasing (near gales from the ENE on Fri night, light winds from the E by Sat afternoon). | Days 3-6 Weather Summary Light rain (total 8mm), mostly falling on Tue night. Very mild (max 10°C on Sun night, min 5°C on Mon night). Wind will be generally light. | |||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thu 20 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 11 | 10 | 8 | 8 | 8 | 9 | 8 | 14 | 13 | 13 | 12 | 12 | 11 | 10 | 10 | 12 | 11 | 11 | 11 | 10 | 10 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 3776 | 2159 | 1497 | 1763 | 1261 | 568 | 191 | 136 | 173 | 117 | 72 | 71 | 85 | 410 | 615 | 1055 | 1255 | 1210 | 798 | 470 | 290 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross | cross | cross | cross- on | cross- on | cross- on | on | cross- on | on | glass | cross- off | cross | cross- on | on | on | on | on | cross- off | |
High Tide / height (m) | 1:20AM 2.32 | 1:28PM 2.87 | 2:22AM 2.48 | 2:25PM 2.92 | 3:09AM 2.67 | 3:11PM 2.96 | 3:47AM 2.85 | 3:51PM 3.00 | 4:20AM 3.00 | 4:26PM 3.02 | 4:51AM 3.12 | 5:00PM 3.03 | 5:21AM 3.19 | 5:34PM 3.00 | ||||||||
Low Tide / height (m) | 7:05AM 1.13 | 8:12PM 0.72 | 8:11AM 1.01 | 8:55PM 0.61 | 9:01AM 0.87 | 9:31PM 0.51 | 9:42AM 0.73 | 10:02PM 0.44 | 10:18AM 0.61 | 10:32PM 0.39 | 10:52AM 0.51 | 11:02PM 0.37 | 11:25AM 0.45 | |||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thu 20 | ||||||||||||||||
| Sunrise | - | 8:03 | - | - | 8:04 | - | - | 8:07 | - | - | 8:08 | - | - | 8:11 | - | - | 8:11 | - | - | 8:14 | - | |
| Sunset | - | - | 4:38 | - | - | 4:37 | - | - | 4:36 | - | - | 4:34 | - | - | 4:32 | - | - | 4:31 | - | - | 4:30 | |
 |  |  | | | |  | | |  |  | |  | |  | |  | | | | | ||
Rain (mm) | 3 | 1 | - | 2 | - | - | - | - | - | - | - | - | 1 | - | - | 3 | 2 | 2 | 2 | - | - | |
| Temp. °C | 8 | 7 | 8 | 7 | 8 | 9 | 9 | 9 | 9 | 10 | 9 | 9 | 8 | 5 | 6 | 7 | 6 | 7 | 7 | 7 | 7 | |
| Feels °C (?) | 0 | -3 | -3 | -5 | 0 | 4 | 5 | 4 | 3 | 5 | 4 | 6 | 6 | 2 | 3 | 1 | -1 | -1 | 0 | 5 | 3 | |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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.
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