Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Lackan Bay surfForecast / Mayo and Achill Island / Ireland
48hr Weather and Surf, issued 5 am Thursday 18 Dec 2025 ISTForecast update in hr min s Forecast update imminent
Lackan Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Lackan Bay sea temperature is
10.4° C
(Which is normal for this time of year)How big are the waves at Lackan Bay today?
The current surf forecast for Lackan Bay at 9AM is: 7.5m 19s primary swell from a West-northwest direction (forecast issued at 05:00am December 18). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Dec) | 25ft (7.5m) | 19s |
| Afternoon (18 Dec) | 23ft (7.0m) | 18s |
| Evening (18 Dec) | 21ft (6.5m) | 18s |
Table - waves today at Lackan Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 45414 | 41865 | 39560 | 34626 | 33092 | 28857 | 27172 | 26620 | 23200 | 21433 | 22473 | 20492 | 15795 | 10900 | 7348 | 4646 | 3423 | 2725 | 2498 | 2329 | 2096 | 3129 | 7971 | 12425 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | off | off | off | off | off | off | cross- off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | cross- off | cross- off | cross- off |
High Tide / height (m) | 4:43PM 2.83 | 5:06AM 3.10 | 5:21PM 2.87 | 5:42AM 3.20 | 5:56PM 2.89 | |||||||||||||||||||
Low Tide / height (m) | 10:36AM 0.70 | 10:43PM 0.57 | 11:13AM 0.60 | 11:18PM 0.50 | 11:50AM 0.55 | 11:52PM 0.46 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| Sunrise | - | - | 8:52 | - | - | - | - | - | - | - | 8:52 | - | - | - | - | - | - | - | 8:53 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:13 | - | - | - | - | - | - | - | 4:13 | - | - | - | - | - | - | - | 4:13 | - | - | - |
 |  |  |  | |  | | | | |  | |  | | |  | | | |  | | | | | |
Rain (mm) | - | - | 1 | 11 | 2 | - | - | - | - | - | - | - | - | - | - | 1 | - | 1 | 2 | - | - | - | - | - |
| Temp. °C | 7 | 7 | 6 | 7 | 6 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 7 | 7 | 6 | 5 | 5 |
| Feels °C (?) | 0 | 2 | 1 | 1 | 1 | 0 | -2 | -1 | -1 | -1 | 0 | 0 | 2 | 3 | 2 | 1 | -2 | -1 | 1 | 0 | 3 | 2 | 1 | 1 |
- 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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