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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
48hr Weather and Surf, issued 12 am Friday 15 May 2026 ISTForecast 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
11.8° C
(Which is slightly warmer than usual)How big are the waves at Bunatrahir Bay today?
The current surf forecast for Bunatrahir Bay at 4AM is: 2.0m 8s primary swell from a North-northwest direction and 0.3m 9s secondary swell from a West direction (forecast issued at 12:00am May 15). An open ocean swell of 0.1m 15s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 6ft (1.8m) | 8s |
| Afternoon (15 May) | 3.5ft (1.1m) | 7s |
| Evening (15 May) | 2.5ft (0.8m) | 9s |
Table - waves today at Bunatrahir Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 8mm), mostly falling on Sun morning. Very mild (max 11°C on Sat morning, min 8°C on Sat night). Winds increasing (light winds from the WNW on Fri afternoon, fresh winds from the WNW by Sat afternoon). | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | ||||||||||||||||||||||
1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
N 8 | NNW 8 | NNW 8 | N 7 | N 7 | N 7 | N 7 | W 9 | W 8 | W 8 | W 8 | WNW 8 | WNW 7 | W 12 | W 12 | W 11 | W 13 | W 13 | W 13 | W 12 | W 13 | W 12 | W 12 | W 12 | |
377 | 498 | 365 | 186 | 152 | 106 | 86 | 95 | 115 | 142 | 121 | 210 | 232 | 365 | 1248 | 1201 | 3355 | 3579 | 3648 | 3385 | 3265 | 2700 | 2405 | 2000 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | cross-on | on | cross-on | cross-on | cross-on | cross-off | off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | |
High Tide | 4:52AM3.33m | 5:28PM3.27m | 5:40AM3.45m | 6:11PM3.45m | 6:28AM3.48m | 6:54PM3.57m | ||||||||||||||||||
Low Tide | 10:41PM0.53m | 11:10AM0.08m | 11:27PM0.30m | 11:51AM-0.02m | 00:13AM0.12m | 12:34PM-0.02m | ||||||||||||||||||
 | |  | | |  | | | | | |  | | |  |  | | | | | |  | |  | |
 | — | 5:33 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:34 | — | — | — | — | — | — | — | 9:36 | — | — | — | — | — | — | — | 9:37 | — |
— | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 1 | 2 | 2 | 1 | 1 | — | |
Temp °C | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 9 | 9 | 10 | 10 | 10 | 11 | 11 | 10 | 9 | 8 | 8 | 8 | 8 | 8 | 10 | 10 | 7 |
3 | 4 | 4 | 5 | 6 | 6 | 7 | 6 | 6 | 8 | 7 | 5 | 5 | 4 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 4 | 3 | |
Swell 1 Height (m) Direction Period (s) | WNW 8 | W 9 | W 9 | N 7 | N 7 | N 7 | N 7 | N 7 | W 8 | N 7 | W 8 | N 10 | WNW 13 | W 12 | WNW 15 | W 14 | NNE 10 | NNE 10 | W 13 | W 12 | W 13 | W 12 | W 12 | W 12 |
 kJ | 224 | 15 | 25 | 186 | 152 | 106 | 86 | 66 | 115 | 51 | 121 | 74 | 232 | 365 | 288 | 912 | 33 | 32 | 3648 | 3385 | 3265 | 2700 | 2405 | 2000 |
Swell 2 Height (m) Direction Period (s) | W 9 | SW 15 | SW 15 | WNW 8 | WNW 8 | NW 8 | NW 7 | W 9 | N 7 | WNW 16 | N 10 | WNW 14 | N 10 | N 10 | N 10 | N 10 | — | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NNE 10 |
| kJ | 16 | 8 | 8 | 130 | 107 | 57 | 44 | 95 | 51 | 24 | 73 | 147 | 74 | 52 | 51 | 50 | — | 18 | 31 | 32 | 32 | 32 | 31 | 31 |
Swell 3 Height (m) Direction Period (s) | SW 15 | — | — | W 9 | W 9 | W 7 | W 7 | NW 7 | W 16 | W 13 | WNW 15 | — | — | — | NNE 10 | — | — | — | — | — | — | — | — | — |
| kJ | 8 | — | — | 15 | 14 | 23 | 35 | 44 | 5 | 4 | 71 | — | — | — | 33 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 8 | NNW 8 | NNW 8 | — | — | — | — | — | — | W 8 | — | WNW 8 | WNW 7 | WNW 7 | W 12 | W 11 | W 13 | W 13 | — | — | — | — | — | — |
| kJ | 377 | 498 | 365 | — | — | — | — | — | — | 142 | — | 210 | 192 | 225 | 1248 | 1201 | 3355 | 3579 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 386 | 151 | 151 | 58 | 226 | 226 | 155 | 0 | 0 | 0 | 0 | 73 | 179 | 456 | 456 | 476 | 203 | 49 | 179 | 9 | 42 | 186 | 123 | 9 |
Best forecast wave conditions in Mayo and Achill Island | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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