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:
Machir Bay (Islay) surfForecast / Scot – Inner Hebrides / UK
48hr Weather and Surf, issued 11 pm Saturday 20 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Machir Bay (Islay) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Machir Bay (Islay) sea temperature is
11.1° C
(Which is 1.4°C warmer than normal for this time of year)How big are the waves at Machir Bay (Islay) today?
The current surf forecast for Machir Bay (Islay) at 5AM is: 2.5m 16s primary swell from a West direction (forecast issued at 11:00pm December 20). An open ocean swell of 1.7m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Dec) | 10ft (3.0m) | 16s |
| Afternoon (21 Dec) | 10ft (3.0m) | 16s |
| Evening (21 Dec) | 8ft (2.5m) | 15s |
Table - waves today at Machir Bay (Islay). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||||||||||||
| 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 | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 16 | 15 | 16 | 16 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 15 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 750 | 575 | 2344 | 3409 | 4189 | 4189 | 3760 | 3221 | 2842 | 2326 | 1770 | 1380 | 1060 | 833 | 628 | 529 | 411 | 338 | 277 | 267 | 434 | 1315 | 1433 | 1999 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | off | off | off | off | off | cross- off | off | cross- off | cross- off | cross- off | cross- off | on | cross- on | cross- on | cross- on | cross | cross |
High Tide / height (m) | 6:04AM 2.56 | 6:13PM 2.44 | 6:40AM 2.58 | 6:47PM 2.43 | 7:16AM 2.56 | |||||||||||||||||||
Low Tide / height (m) | 11:45PM 0.37 | 12:09PM 0.50 | 12:18AM 0.33 | 12:43PM 0.53 | 12:52AM 0.32 | 1:17PM 0.57 | ||||||||||||||||||
Sunday 21 | Monday 22 | Tuesday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:52 | - | - | - | - | - | - | - | 8:53 | - | - | - | - | - | - | - | 8:53 | - | - | - |
| Sunset | - | - | - | - | - | - | 3:52 | - | - | - | - | - | - | - | 3:53 | - | - | - | - | - | - | - | 3:53 | - |
 |  | | |  |  | | | | | |  | | | | | | | | |  | |  |  | |
Rain (mm) | - | - | - | - | 1 | - | - | - | - | - | - | 1 | 2 | 1 | 1 | - | - | - | 1 | - | - | - | - | - |
| Temp. °C | 9 | 8 | 8 | 7 | 9 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 |
| Feels °C (?) | -2 | -3 | -2 | -4 | 0 | 0 | 4 | 3 | 3 | 4 | 5 | 4 | 4 | 6 | 5 | 4 | 6 | 7 | 8 | 7 | 6 | 4 | 2 | 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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