Surf Forecasts:
Machir Bay (Islay) surf forecast from 21 Oct 2026:
- Best quality surf: Sunday 25 Oct, 3AM (local time) - 25ft (7.5m), 16s period, W swell with onshore winds.
- Most powerful swell: Sunday 25 Oct, 6AM (local time) - 25ft (7.5m), 16s period, W swell with 31,602 kJ wave energy.
- Next surfable swell (1★+): Wednesday 21 Oct, 7AM (local time) - 7ft (2.1m), 12s period with W swell.
Best Forecast Surf Conditions for Machir Bay (Islay) this week:
The surf forecast for Machir Bay (Islay) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Oct 21) at 7AM. The primary swell is predicted to be 2.1m and 12s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Machir Bay (Islay) in the next 16 days are 7.5m 16s and forecast to arrive on Sunday (Oct 25) at 6AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Tuesday (Oct 27) at 6PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 21st Oct) | 7ft (2.1m) 12s |
| Best Surf | 3AM (Sun 25th Oct) | 25ft (7.5m) 16s |
| Most Powerful | 6AM (Sun 25th Oct) | 25ft (7.5m) 16s |
Table - best surf conditions forecast for Machir Bay (Islay) over the next 16 days.
Short Range ForecastHeavy rain (total 35mm), heaviest during Wed afternoon. Very mild (max 11°C on Tue night, min 8°C on Wed afternoon). Winds decreasing (near gales from the WNW on Wed afternoon, light winds from the WSW by Thu night). | Days 4-6 Weather SummaryHeavy rain (total 35mm), heaviest during Mon afternoon. Very mild (max 15°C on Mon afternoon, min 9°C on Sat night). Winds increasing (light winds from the WSW on Fri night, stormy winds from the WNW by Sun morning). | ||||||||||||||||||||
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | W 12 | WNW 11 | WNW 12 | WNW 12 | W 11 | W 11 | W 12 | W 12 | W 13 | W 13 | W 12 | W 13 | W 16 | WNW 15 | WNW 13 | WNW 11 | W 11 | W 11 | WSW 13 | WSW 15 | W 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1557 | 3492 | 2598 | 1160 | 836 | 676 | 1463 | 2460 | 5400 | 2379 | 880 | 11782 | 29219 | 21361 | 6382 | 1568 | 669 | 382 | 4014 | 6144 | 6152 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-on | on | on | on | cross | cross-off | cross | cross-on | cross-on | cross-on |
High Tide | 3:20PM2.12m | 3:34AM1.99m | 3:59PM2.34m | 4:14AM2.20m | 4:34PM2.56m | 4:49AM2.41m | 5:07PM2.74m | 5:24AM2.60m | 5:42PM2.87m | 5:59AM2.75m | 6:17PM2.93m | 6:35AM2.84m | 6:54PM2.91m | ||||||||
Low Tide | 8:47AM0.88m | 9:36PM0.88m | 9:33AM0.70m | 10:11PM0.66m | 10:10AM0.50m | 10:42PM0.45m | 10:45AM0.32m | 11:13PM0.26m | 11:19AM0.16m | 11:45PM0.12m | 11:55AM0.05m | 00:19AM0.04m | 12:33PM0.01m | 00:55AM0.03m | |||||||
 |  |  |  |  |  | | |  |  | | | | | | |  |  | | | | |
 | 8:07 | — | — | 8:08 | — | — | 8:11 | — | — | 8:14 | — | — | 7:15 | — | — | 8:18 | — | — | 8:19 | — | — |
 | — | 6:12 | — | — | 6:08 | — | — | 6:07 | — | — | 6:05 | — | — | 5:01 | — | — | 6:00 | — | — | 5:58 | — |
mm | 3 | 12 | — | — | 1 | 14 | 1 | 1 | 2 | — | 12 | 7 | 2 | 1 | 1 | 1 | 9 | 6 | 6 | 5 | 7 |
Temp °C | 11 | 10 | 10 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 13 | 10 | 10 | 10 | 11 | 10 | 15 | 15 | 11 | 11 | 11 |
Feels °C | 8 | 0 | 0 | 5 | 6 | 6 | 0 | 1 | 3 | 2 | 5 | -3 | -9 | -5 | 1 | 4 | 8 | 6 | -3 | -3 | -2 |
Swell 1 Height (m) Direction Period (s) | W 12 | — | — | WNW 12 | W 11 | W 11 | — | — | — | W 13 | W 12 | — | — | — | — | WNW 11 | W 11 | W 11 | W 13 | WSW 15 | W 16 |
| kJ | 1557 | — | — | 1160 | 836 | 676 | — | — | — | 2379 | 880 | — | — | — | — | 1568 | 669 | 382 | 2504 | 6144 | 6152 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 18 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 9 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | WNW 11 | WNW 12 | — | — | — | W 12 | W 12 | W 13 | — | S 6 | W 13 | W 16 | WNW 15 | WNW 13 | — | SE 4 | S 4 | WSW 13 | SSE 5 | S 6 |
| kJ | 7 | 3492 | 2598 | — | — | — | 1463 | 2460 | 5400 | — | 342 | 11782 | 29219 | 21361 | 6382 | — | 57 | 28 | 4014 | 74 | 322 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 167 | 223 | 65 | 61 | 14 | 289 | 327 | 450 | 71 | 223 | 1015 | 345 | 811 | 455 | 14 | 73 | 98 | 333 | 727 | 1015 |
Best forecast wave conditions in Inner Hebrides | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Machir Bay (Islay) Surf forecast
The above surf forecast table for Machir Bay (Islay) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Machir Bay (Islay) can be found by selecting the local surf guide option on the grey menu. Our Machir Bay (Islay) 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 (Machir Bay (Islay)) 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 Machir Bay (Islay) 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 Inner Hebrides? If you are looking for accommodation near Machir Bay (Islay), camping, hotels and holiday cottages in Inner Hebrides, consider staying in Motherwell which is 50 km (31 miles) away. Other places in and around Inner Hebrides where you can find information about places to rent, and car hire include Campbeltown which is 65 km (40 miles) away, Ballycastle, Tarbert and Ballypatrick.
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