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Machir Bay (Islay) surfForecast / Scot – Inner Hebrides / UK
48hr Weather and Surf, issued 12 am Monday 18 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
9.9° 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: 1.8m 12s primary swell from a West direction (forecast issued at 12:00am May 18). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 5ft (1.6m) | 11s |
| Afternoon (18 May) | 4.5ft (1.4m) | 11s |
| Evening (18 May) | 4ft (1.2m) | 10s |
Table - waves today at Machir Bay (Islay). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon night. Very mild (max 11°C on Tue morning, min 8°C on Sun night). Winds increasing (calm on Sun night, near gales from the SE by Mon night). | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
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 10 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | WNW 9 | W 9 | W 16 | W 16 | W 15 | W 14 | W 14 | WSW 13 | WSW 13 | W 13 | W 12 | |
988 | 857 | 701 | 599 | 517 | 434 | 290 | 239 | 194 | 122 | 92 | 64 | 58 | 27 | 39 | 84 | 314 | 538 | 918 | 1018 | 1308 | 1127 | 1053 | 761 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross | |
High Tide | 7:02AM2.82m | 7:26PM2.88m | 7:47AM2.70m | 8:13PM2.83m | 8:34AM2.52m | 9:05PM2.71m | ||||||||||||||||||
Low Tide | 00:43AM0.04m | 1:04PM0.06m | 1:32AM0.11m | 1:49PM0.12m | 2:24AM0.26m | 2:38PM0.23m | ||||||||||||||||||
 | |  | |  | | |  |  | |  | | | |  |  | | | | |  | | | | |
 | — | 5:09 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — | — | 5:05 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:35 | — | — | — | — | — | — | — | 9:37 | — | — | — | — | — | — | — | 9:38 | — |
— | — | — | — | — | — | — | — | 2 | 5 | 3 | 1 | 2 | 3 | 2 | 1 | 1 | — | — | — | — | — | — | — | |
Temp °C | 8 | 8 | 8 | 9 | 9 | 10 | 9 | 9 | 9 | 9 | 10 | 10 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 12 |
6 | 6 | 6 | 7 | 6 | 4 | 1 | 1 | -1 | -2 | 0 | 3 | 5 | 7 | 7 | 7 | 6 | 5 | 4 | 5 | 6 | 5 | 6 | 9 | |
Swell 1 Height (m) Direction Period (s) | W 12 | W 12 | W 11 | W 11 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | WNW 9 | W 9 | WSW 9 | W 16 | W 15 | W 14 | W 14 | WSW 13 | WSW 13 | W 13 | W 12 |
 kJ | 988 | 857 | 701 | 599 | 517 | 434 | 290 | 239 | 194 | 122 | 92 | 64 | 58 | 27 | 39 | 84 | 314 | 538 | 918 | 1018 | 1308 | 1127 | 1053 | 761 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 16 | W 15 | W 15 | W 15 | W 14 | WSW 9 | W 13 | W 16 | WSW 9 | WSW 10 | — | SE 4 | SSE 4 | — | W 7 | SSE 4 |
| kJ | — | — | — | — | — | — | — | — | 5 | 4 | 4 | 4 | 16 | 15 | 31 | 80 | 88 | 96 | — | 4 | 2 | — | 102 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 13 | WNW 9 | W 13 | SE 4 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 14 | 8 | 31 | 7 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SE 3 | SE 4 | SE 4 | SE 5 | SE 6 | SSE 6 | SSE 5 | SSE 4 | SSE 4 | S 4 | S 3 | SW 4 | SW 4 | SW 4 | WSW 6 | — | — | — | — |
| kJ | — | — | — | — | — | 2 | 12 | 44 | 115 | 202 | 196 | 80 | 31 | 20 | 10 | 5 | 10 | 24 | 35 | 110 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 4 | 62 | 62 | 62 | 183 | 159 | 93 | 93 | 76 | 93 | 71 | 14 | 65 | 14 | 14 | 307 | 65 | 244 | 61 | 14 |
Best forecast wave conditions in Inner Hebrides | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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