Surf Forecasts:
Machir Bay (Islay) surf forecast from 20 Sep 2026:
- Best quality surf: Wednesday 23 Sep, 4AM (local time) - 7ft (2.1m), 13s period, W swell with glassy winds.
- Most powerful swell: Friday 25 Sep, 10AM (local time) - 10ft (3.0m), 16s period, W swell with 5,145 kJ wave energy.
- Next surfable swell (1★+): Monday 21 Sep, 7PM (local time) - 5ft (1.5m), 10s 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 Monday (Sep 21) at 7PM. The primary swell is predicted to be 1.5m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Machir Bay (Islay) in the next 16 days are 3.0m 16s and forecast to arrive on Friday (Sep 25) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Thursday (Sep 24) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Mon 21st Sep) | 5ft (1.5m) 10s |
| Best Surf | 4AM (Wed 23rd Sep) | 7ft (2.1m) 13s |
| Most Powerful | 10AM (Fri 25th Sep) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Machir Bay (Islay) over the next 16 days.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue afternoon. Very mild (max 19°C on Mon afternoon, min 11°C on Sun night). Winds decreasing (strong winds from the W on Sat night, light winds from the NW by Tue afternoon). | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Tue night. Very mild (max 15°C on Fri morning, min 10°C on Tue night). Winds increasing (calm on Tue night, strong winds from the SE by Thu morning). | ||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||||
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 | W 12 | W 12 | W 11 | W 10 | W 11 | W 11 | W 14 | W 13 | W 12 | W 11 | WNW 11 | W 12 | W 12 | W 16 | W 16 | W 13 | W 12 | W 11 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2601 | 1783 | 1174 | 607 | 507 | 417 | 835 | 584 | 1695 | 1465 | 918 | 629 | 452 | 432 | 909 | 5145 | 4013 | 1998 | 887 | 673 | 392 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-off | cross | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross-off |
High Tide | 1:27PM1.74m | 2:21AM1.64m | 3:24PM1.90m | 3:39AM1.83m | 4:11PM2.13m | 4:20AM2.05m | 4:45PM2.36m | 4:53AM2.26m | 5:15PM2.59m | 5:24AM2.46m | 5:44PM2.78m | 5:55AM2.62m | 6:14PM2.91m | ||||||||
Low Tide | 6:34AM1.15m | 8:19PM1.22m | 8:40AM1.06m | 9:41PM1.06m | 9:44AM0.86m | 10:24PM0.86m | 10:23AM0.64m | 10:55PM0.65m | 10:55AM0.43m | 11:23PM0.45m | 11:24AM0.25m | 11:51PM0.28m | 11:54AM0.11m | 00:19AM0.15m | |||||||
 |  |  | | |  |  |  |  | | |  | | | | |  | | | | | |
 | 7:05 | — | — | 7:07 | — | — | 7:09 | — | — | 7:11 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — |
 | — | 7:30 | — | — | 7:29 | — | — | 7:25 | — | — | 7:22 | — | — | 7:21 | — | — | 7:17 | — | — | 7:15 | — |
mm | — | — | 3 | — | — | — | — | 3 | 7 | — | — | — | — | — | — | 1 | 2 | — | — | — | — |
Temp °C | 13 | 13 | 12 | 18 | 19 | 19 | 14 | 13 | 12 | 13 | 13 | 12 | 12 | 14 | 14 | 15 | 12 | 13 | 13 | 14 | 13 |
Feels °C | 6 | 8 | 10 | 16 | 18 | 19 | 11 | 11 | 10 | 9 | 9 | 10 | 4 | 6 | 7 | 9 | 10 | 10 | 8 | 10 | 7 |
Swell 1 Height (m) Direction Period (s) | — | WNW 11 | W 12 | W 12 | W 11 | W 10 | W 11 | W 11 | W 14 | W 13 | W 12 | W 11 | WNW 11 | W 12 | W 12 | W 16 | W 16 | W 13 | W 12 | W 11 | W 10 |
| kJ | — | 1783 | 1174 | 607 | 507 | 417 | 835 | 584 | 1695 | 1465 | 918 | 629 | 452 | 432 | 909 | 5145 | 4013 | 1998 | 887 | 673 | 392 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SSE 4 | — | — | W 18 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 1 | — | — | 57 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 12 | W 11 | — | S 3 | — | S 2 | SSW 3 | — | — | — | NW 4 | — | SSE 4 | SSE 4 | SSE 4 | SE 5 | — | — | — | — | SE 3 |
| kJ | 2601 | 1702 | — | 3 | — | 1 | 3 | — | — | — | 25 | — | 13 | 46 | 38 | 23 | — | — | — | — | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 421 | 223 | 61 | 14 | 14 | 14 | 61 | 69 | 69 | 65 | 81 | 14 | 183 | 231 | 71 | 61 | 14 | 14 | 16 | 52 | 61 |
Best forecast wave conditions in Inner Hebrides | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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