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Machir Bay (Islay) surfForecast / Scot – Inner Hebrides / UK
48hr Weather and Surf, issued 12 am Thursday 21 May 2026 BSTForecast 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
10.0° C
(Which is 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 4AM is: 1.2m 12s primary swell from a West direction and 0.7m 9s secondary swell from a West-northwest direction (forecast issued at 12:00am May 21). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 3.5ft (1.0m) | 11s |
| Afternoon (21 May) | 4ft (1.2m) | 11s |
| Evening (21 May) | 3.5ft (1.1m) | 10s |
Table - waves today at Machir Bay (Islay). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 14mm), heaviest on Wed night. Very mild (max 16°C on Thu afternoon, min 11°C on Wed night). Winds decreasing (fresh winds from the SE on Thu night, calm by Fri afternoon). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
W 12 | W 12 | W 11 | W 11 | W 11 | W 11 | W 9 | W 10 | WSW 10 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 7 | WSW 9 | |
628 | 390 | 307 | 242 | 233 | 375 | 251 | 184 | 163 | 167 | 214 | 245 | 202 | 245 | 195 | 191 | 191 | 180 | 133 | 163 | 150 | 66 | 43 | 135 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | cross-off | cross-off | cross-on | cross | cross | cross | glassy | glassy | |
High Tide | 9:24AM2.32m | 10:03PM2.55m | 10:20AM2.12m | 11:11PM2.40m | 11:28AM1.96m | |||||||||||||||||||
Low Tide | 3:21AM0.45m | 3:32PM0.37m | 4:25AM0.65m | 4:34PM0.51m | 5:38AM0.80m | 5:45PM0.62m | ||||||||||||||||||
 |  |  |  | | | |  | |  | | | | | | | | |  |  | | | | | |
 | — | 5:03 | — | — | — | — | — | — | — | 5:03 | — | — | — | — | — | — | — | 5:01 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:40 | — | — | — | — | — | — | — | 9:42 | — | — | — | — | — | — | — | 9:44 | — |
— | — | 4 | — | — | — | 3 | 2 | — | 1 | — | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 12 | 11 | 14 | 15 | 16 | 15 | 14 | 12 | 13 | 12 | 13 | 15 | 16 | 13 | 13 | 13 | 13 | 12 | 13 | 14 | 16 | 15 | 15 |
7 | 8 | 5 | 10 | 11 | 14 | 13 | 9 | 6 | 8 | 7 | 9 | 12 | 11 | 13 | 13 | 12 | 11 | 11 | 11 | 11 | 14 | 14 | 15 | |
Swell 1 Height (m) Direction Period (s) | W 12 | W 12 | W 11 | W 11 | W 11 | W 11 | W 9 | W 10 | WSW 10 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | W 6 | W 7 | WSW 9 |
 kJ | 628 | 390 | 307 | 242 | 233 | 375 | 251 | 184 | 163 | 167 | 214 | 245 | 202 | 245 | 195 | 191 | 191 | 180 | 133 | 163 | 150 | 39 | 43 | 135 |
Swell 2 Height (m) Direction Period (s) | W 7 | WNW 9 | WNW 8 | WNW 8 | NW 7 | SSE 3 | — | NW 7 | WNW 6 | WNW 6 | NW 6 | NW 6 | NW 6 | NW 6 | SSE 3 | SSE 4 | SSE 5 | SE 4 | SE 4 | — | — | WSW 9 | W 9 | W 16 |
| kJ | 66 | 67 | 78 | 56 | 27 | 1 | — | 7 | 4 | 4 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | — | — | 66 | 43 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SSE 3 | S 6 | N 9 | N 9 | — | — | — | — | — | — | NW 6 | NW 6 | — | — | — | — | W 16 | — | — | — |
| kJ | — | — | — | — | 4 | 1 | 2 | 2 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 5 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 2 | SSE 3 | S 4 | — | — | SSE 2 | SSE 3 | SE 4 | SSE 4 | SSE 4 | SSE 3 | SSE 3 | SSE 3 | — | WNW 2 | — | — | — | — | — | — | — | — |
| kJ | — | 1 | 9 | 9 | — | — | 1 | 7 | 17 | 13 | 16 | 9 | 4 | 4 | — | 1 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 62 | 66 | 14 | 14 | 4 | 14 | 249 | 124 | 93 | 93 | 14 | 14 | 71 | 0 | 0 | 0 | 0 | 14 | 14 | 8 | 8 | 0 | 0 |
Best forecast wave conditions in Inner Hebrides | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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