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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 pm Monday 18 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
11.6° C
(Which is normal for this time of year)How big are the waves at Bunatrahir Bay today?
The current surf forecast for Bunatrahir Bay at 5PM is: 1.6m 10s primary swell from a West-northwest direction and 0.3m 9s secondary swell from a North-northeast direction (forecast issued at 12:00pm May 18). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 6.5ft (2.0m) | 11s |
| Afternoon (18 May) | 5ft (1.6m) | 10s |
| Evening (18 May) | 4.5ft (1.3m) | 10s |
Table - waves today at Bunatrahir Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 13mm), heaviest on Mon night. Very mild (max 14°C on Wed morning, min 10°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | W 10 | W 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | W 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 10 | |
934 | 721 | 533 | 394 | 294 | 192 | 139 | 86 | 134 | 227 | 274 | 719 | 2398 | 2976 | 3293 | 2815 | 2618 | 2366 | 1725 | 1390 | 995 | 750 | 572 | 647 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | |
High Tide | 7:16AM3.41m | 7:40PM3.60m | 8:07AM3.25m | 8:29PM3.56m | 9:00AM3.02m | 9:22PM3.45m | ||||||||||||||||||
Low Tide | 1:17PM0.05m | 1:50AM0.05m | 2:02PM0.20m | 2:43AM0.17m | 2:49PM0.39m | 3:41AM0.35m | ||||||||||||||||||
 | | |  |  | |  | | | | |  |  | | | | |  | | | | | | | |
 | 5:28 | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — |
 | — | — | — | 9:38 | — | — | — | — | — | — | — | 9:40 | — | — | — | — | — | — | — | 9:42 | — | — | — | 9:44 |
— | — | — | 1 | 2 | 3 | — | 2 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | 1 | — | |
Temp °C | 10 | 12 | 11 | 10 | 10 | 11 | 11 | 11 | 12 | 13 | 12 | 11 | 10 | 10 | 11 | 11 | 12 | 14 | 12 | 13 | 13 | 13 | 14 | 14 |
6 | 7 | 6 | 4 | 3 | 7 | 9 | 8 | 8 | 8 | 9 | 6 | 7 | 6 | 6 | 6 | 6 | 7 | 8 | 10 | 11 | 9 | 11 | 11 | |
Swell 1 Height (m) Direction Period (s) | W 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | W 10 | W 9 | WSW 9 | WSW 9 | W 13 | WSW 9 | W 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | N 8 | N 8 | N 8 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 10 |
 kJ | 934 | 721 | 533 | 394 | 294 | 192 | 139 | 86 | 134 | 55 | 274 | 719 | 2398 | 2976 | 3293 | 2815 | 5 | 5 | 1 | 1390 | 995 | 750 | 572 | 647 |
Swell 2 Height (m) Direction Period (s) | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | WNW 9 | WNW 9 | NNE 8 | W 16 | NNE 8 | NNE 8 | NNE 8 | N 8 | N 8 | — | — | — | N 8 | NW 6 | NW 6 | NW 6 | NW 6 |
| kJ | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 49 | 33 | 14 | 134 | 14 | 14 | 14 | 5 | 5 | — | — | — | 1 | 13 | 13 | 13 | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 16 | W 16 | W 15 | W 15 | NNE 8 | W 13 | NW 9 | W 13 | WNW 9 | N 8 | — | — | — | — | — | — | — | N 8 | N 8 | N 8 | N 8 |
| kJ | — | — | — | 5 | 5 | 17 | 17 | 14 | 32 | 12 | 55 | 8 | 6 | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | — | — | SE 3 | SE 4 | SE 4 | SE 4 | SE 4 | SE 4 | SSE 3 | WSW 9 | — | WSW 10 | — | — | — | — | WSW 13 | WSW 13 | WSW 12 | — | — | SSE 2 | ESE 3 | S 3 |
| kJ | — | — | 2 | 15 | 51 | 40 | 12 | 8 | 7 | 227 | — | 399 | — | — | — | — | 2618 | 2366 | 1725 | — | — | 2 | 1 | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 20 | 20 | 56 | 156 | 20 | 0 | 0 | 0 | 11 | 0 | 9 | 9 | 9 | 9 | 9 | 179 | 557 | 9 | 9 | 0 | 0 | 0 | 0 |
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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