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

information circle48hr Weather and Surf, issued 12 pm 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 8PM is: 1.4m 13s primary swell from a West direction and 1.0m 6s secondary swell from a West direction (forecast issued at 12:00pm May 20). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (20 May)5ft (1.6m)14s
Afternoon (20 May)5.5ft (1.7m)13s
Evening (20 May)5ft (1.5m)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 16mm), heaviest on Fri night. Very mild (max 17°C on Fri afternoon, min 10°C on Wed morning). Winds decreasing (fresh winds from the SE on Wed night, calm by Fri afternoon).

Wed
20
Thursday
21
Friday
22
Sat
23
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
1 AM
4 AM
7 AM
Rating
(10 max)
0
0
0
0
0
2
2
0
0
0
2
1
0
0
0
0
0
1
1
2
1
0
0
1
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.6
W
14
1.7
W
13
1.7
W
13
1.3
W
13
1.6
W
12
1.5
W
12
1.4
W
12
1.1
W
11
1
W
11
1
W
11
1.3
W
10
1.2
W
9
1
W
9
0.9
WSW
10
0.9
WSW
10
0.9
WSW
10
0.9
WSW
11
0.9
WSW
11
0.9
WSW
11
0.9
WSW
11
0.9
WSW
11
1
WSW
11
1.1
WSW
10
1.2
WSW
10
Wave Graph
Metric surfscale
Energy kJ
1018
1034
1003
556
746
636
520
307
242
233
367
251
180
157
167
173
198
202
206
214
210
240
265
263
Wind (km/h)
20
SW
20
WSW
25
WSW
15
WSW
15
WSW
15
SE
20
SE
30
SE
25
S
20
S
5
SSE
20
SSE
30
SSE
30
SE
25
SE
30
SSE
25
SSE
20
SSE
20
SE
5
NW
5
SSW
20
SSW
15
SSW
15
S
cross-on
cross-on
cross-on
on
cross-on
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-off
glassy
cross
cross-on
cross-on
cross
High Tide
8:34AM2.52m
9:05PM2.71m
9:24AM2.32m
10:03PM2.55m
10:20AM2.12m
11:11PM2.40m
Low Tide
2:38PM0.23m
3:21AM0.45m
3:32PM0.37m
4:25AM0.65m
4:34PM0.51m
5:38AM0.80m
part cloud
clear
clear
part cloud
part cloud
cloud
part cloud
light rain
rain showers
cloud
cloud
light rain
light rain
cloud
rain showers
cloud
part cloud
cloud
cloud
light rain
light rain
rain showers
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:05
5:03
5:03
5:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:38
9:40
9:42
9:44
1
1
2
3
1
2
4
2
Temp °C
10
11
11
12
12
12
12
11
13
15
16
14
15
14
12
12
13
15
17
13
12
13
12
12
5
6
5
8
8
8
8
5
9
12
15
11
10
9
7
6
9
11
13
13
11
10
9
9
Swell 1
Height (m)
Direction
Period (s)
1.6
W
14
1.7
W
13
1.5
W
13
1.3
W
13
1.6
W
12
1.5
W
12
1.4
W
12
1.1
W
11
1
W
11
1
W
11
1.3
W
10
1.2
W
9
1
W
9
0.9
WSW
10
0.9
WSW
10
0.9
WSW
10
0.9
WSW
11
0.9
WSW
11
0.9
WSW
11
0.9
WSW
11
0.9
WSW
11
1
WSW
11
1.1
WSW
10
1.2
WSW
10
Energy kJ
1018
1034
760
556
746
636
520
307
242
233
367
251
180
157
167
173
198
202
206
214
210
240
265
263
Swell 2
Height (m)
Direction
Period (s)
0.9
WNW
7
0.9
WNW
7
0.8
WNW
8
0.7
WNW
8
0.5
NW
7
0.3
SSE
3
0.2
WNW
7
0.3
NW
7
0.1
NW
6
0.1
NW
6
0.1
NW
6
0.1
NW
6
0.1
NW
6
0.3
S
3
0.1
N
6
0.2
SSE
5
0.1
SE
5
Energy kJ
86
91
78
56
27
2
4
7
2
1
1
1
1
2
1
2
1
Swell 3
Height (m)
Direction
Period (s)
0.1
NW
9
0.1
N
9
0.1
NW
6
Energy kJ
3
2
1
Wind waves
Height (m)
Direction
Period (s)
0.9
WSW
5
1.7
W
13
1
W
6
0.4
SSE
2
0.6
SSE
3
0.6
S
4
0.4
S
3
0.3
SSE
3
0.6
SSE
3
0.8
SE
4
0.9
SSE
4
0.8
SSE
4
0.6
SSE
4
0.4
SSE
3
0.4
SSE
3
0.2
SSE
5
0.4
SE
4
0.4
S
3
Energy kJ
41
1003
76
2
9
9
4
2
8
17
28
20
10
4
4
2
5
2
Nearest Offshore or Glassy
Rating
(10 max)
2
4
1
2
2
2
1
1
1
1
2
1
2
1
1
1
1
2
2
2
1
1
1
1
Distance (km)
61
244
72
59
52
14
61
61
14
14
0
79
282
124
106
93
14
71
71
0
14
14
14
14
Best forecast wave conditions in Inner Hebrides
Rating
(10 max)
3
3
1
2
4
3
1
3
3
3
1
1
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
2
2
4
4
3
4
4
3
3
4
3
3
2
3
3
3
3
3
3
2
3
2
2
Header Global
Rating
(10 max)
4
4
4
5
5
5
5
5
5
5
5
5
4
5
5
7
7
7
6
5
5
5
5
6
  • 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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