Machir Bay (Islay) surfForecast / Scot – Inner Hebrides / UK

information circle48hr Weather and Surf, issued 12 am Wednesday 20 May 2026 BST
Forecast 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 6AM is: 1.5m 15s primary swell from a West direction and 0.7m 10s secondary swell from a West direction, 0.9m 10s secondary swell from a West-southwest direction (forecast issued at 12:00am May 20). The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (20 May)5ft (1.6m)14s
Afternoon (20 May)5.5ft (1.7m)13s
Evening (20 May)5ft (1.6m)12s

Table - waves today at Machir Bay (Islay). (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 19mm), heaviest on Tue night. Very mild (max 17°C on Fri afternoon, min 10°C on Tue night). Winds decreasing (fresh winds from the SE on Thu night, light winds from the S by Fri afternoon).

Wednesday
20
Thursday
21
Friday
22
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
Rating
(10 max)
0
0
2
0
0
0
0
2
2
2
0
0
0
0
1
0
0
0
0
1
1
1
1
1
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.8
W
16
1.1
W
15
1.7
WSW
14
1.6
W
14
1.7
W
13
1.7
W
13
1.6
W
13
1.5
W
12
1.5
W
12
1.4
W
12
1.1
W
11
1
W
11
0.9
WSW
11
1.3
W
9
1.2
W
9
1.1
W
10
1
W
10
0.9
WSW
10
1
W
10
1
WSW
10
1
WSW
10
0.9
WSW
11
0.9
WSW
12
0.9
WSW
12
Wave Graph
Metric surfscale
Energy kJ
314
538
1240
1018
1034
1003
851
657
636
520
307
242
191
300
256
221
184
163
221
236
236
202
232
228
Wind (km/h)
20
WSW
20
SSW
25
S
25
SW
25
WSW
30
WSW
20
WSW
10
SSW
20
SE
25
SE
30
SSE
25
SSE
25
S
20
S
20
SSE
30
SSE
30
SE
30
SE
25
SSE
25
SSE
20
SSE
20
SE
5
S
10
W
cross-on
cross-on
cross
cross-on
on
on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
on
High Tide
8:34AM2.52m
9:05PM2.71m
9:24AM2.32m
10:03PM2.55m
10:20AM2.12m
Low Tide
2:24AM0.26m
2:38PM0.23m
3:21AM0.45m
3:32PM0.37m
4:25AM0.65m
4:34PM0.51m
light rain
part cloud
cloud
part cloud
clear
clear
part cloud
part cloud
cloud
cloud
light rain
light rain
cloud
part cloud
light rain
light rain
cloud
light rain
clear
part cloud
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:05
5:03
5:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:38
9:40
9:42
2
3
1
3
4
2
Temp °C
10
10
10
10
10
11
12
12
12
11
11
14
15
16
15
14
14
12
12
13
15
17
16
14
6
6
5
5
5
5
7
9
7
6
5
10
11
12
13
9
8
6
7
9
12
13
15
12
Swell 1
Height (m)
Direction
Period (s)
0.8
WSW
9
1.1
W
15
1.7
WSW
14
1.6
W
14
1.7
W
13
1.6
W
13
1.6
W
13
1.5
W
12
1.5
W
12
1.4
W
12
1.1
W
11
1
W
11
0.9
WSW
11
1.3
W
9
1.2
W
9
1.1
W
10
1
W
10
0.9
WSW
10
1
W
10
1
WSW
10
1
WSW
10
0.9
WSW
11
0.9
WSW
12
0.9
WSW
12
Energy kJ
113
538
1240
1018
1034
865
851
657
636
520
307
242
191
300
256
221
184
163
221
236
236
202
232
228
Swell 2
Height (m)
Direction
Period (s)
0.8
W
16
0.7
W
10
0.9
W
7
0.8
WNW
8
0.7
WNW
8
0.6
WNW
7
0.3
NW
7
0.3
NW
7
0.3
NW
7
0.2
WNW
6
0.1
NW
6
0.1
NW
6
0.1
NW
6
0.1
NW
6
0.3
SSE
4
0.2
SSE
5
Energy kJ
314
94
83
80
58
33
8
7
7
4
2
2
2
1
4
2
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
5
0.3
SE
5
0.2
SSW
3
0.1
NW
6
Energy kJ
3
4
1
1
Wind waves
Height (m)
Direction
Period (s)
0.2
WSW
2
0.9
WSW
10
0.5
SSW
3
0.8
SW
5
1.7
W
13
0.5
S
3
0.6
SSE
4
0.6
S
4
0.5
S
3
0.4
SSE
3
0.5
S
3
0.7
SSE
4
0.6
SSE
4
0.6
SE
4
0.6
SSE
4
0.5
SSE
3
0.5
SSE
3
0.4
SSE
3
Energy kJ
1
163
5
26
1003
5
10
9
5
3
5
11
9
10
11
6
5
4
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
1
1
1
1
2
3
1
1
1
1
1
2
1
2
1
1
1
1
2
2
1
Distance (km)
14
61
14
258
307
72
65
14
16
62
61
14
14
14
71
93
119
93
93
14
14
71
8
14
Best forecast wave conditions in Inner Hebrides
Rating
(10 max)
3
2
2
4
1
1
3
3
1
1
2
3
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
3
2
4
2
2
2
1
3
4
4
3
3
3
3
3
3
3
3
3
3
3
3
3
2
Header Global
Rating
(10 max)
5
5
5
5
4
4
5
5
5
5
5
5
5
4
4
4
4
5
7
7
7
7
5
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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