4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 6 pm Saturday 23 May 2026 WIB
Forecast update in hr  min  s Forecast update imminent
4 Bobs surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's 4 Bobs sea temperature is
30.3° C
(Which is slightly warmer than usual)

How big are the waves at 4 Bobs today?

The current surf forecast for 4 Bobs at 11PM is: 1.2m 14s primary swell from a Southwest direction and 0.4m 8s secondary swell from a West-northwest direction (forecast issued at 06:00pm May 23). An open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (WIB) & DateWave HeightWave Period
Morning (23 May)--
Afternoon (23 May)4.5ft (1.3m)14s
Evening (23 May)4.5ft (1.3m)14s

Table - waves today at 4 Bobs. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 15mm), heaviest on Sat night. Warm (max 29°C on Sat afternoon, min 26°C on Sun morning). Wind will be generally light.

Sat
23
Sunday
24
Monday
25
Tue
26
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
10 AM
1 PM
Rating
(10 max)
3
2
1
1
1
2
2
2
2
1
1
2
1
2
2
2
2
2
3
3
3
3
3
4
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)
1.3
SSW
14
1.4
SSW
14
1.2
SW
14
1.2
SW
14
1.2
SSW
13
1.1
SW
13
1.2
SSW
13
1.1
SW
13
1.1
SW
13
1
SSW
13
1
SSW
13
0.8
SSW
12
0.8
SSW
12
0.6
SW
15
0.6
SSW
15
0.8
SSW
12
0.9
SW
12
0.9
SSW
16
1.3
SSW
16
1.4
SW
17
1.4
SW
17
1.4
SW
17
1.4
SW
16
1.6
SW
16
Wave Graph
Metric surfscale
Energy kJ
663
752
556
532
472
400
458
394
394
351
330
184
184
176
150
187
227
441
875
1036
1193
1124
1044
1239
Wind (km/h)
15
NW
15
NW
20
NW
15
NW
20
NNW
15
N
15
NNW
20
NNE
20
NNW
20
NW
15
NW
15
NW
10
NW
10
NNW
10
NNW
10
N
10
NNW
5
NNW
5
NNW
10
NW
10
NNW
10
NNW
10
NNW
10
N
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
off
cross-off
cross-off
off
off
cross-off
off
High Tide
00:38AM0.77m
12:37PM0.92m
1:50AM0.84m
1:48PM0.85m
2:51AM0.92m
Low Tide
5:56PM0.23m
5:43AM0.39m
6:57PM0.26m
7:20AM0.43m
7:55PM0.27m
8:59AM0.41m
thunderstorm
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
light rain
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
cloud
thunderstorm
part cloud
clear
part cloud
thunderstorm
thunderstorm
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:20
6:20
6:20
6:20
2
2
2
4
1
1
1
1
1
Temp °C
29
29
28
28
28
27
26
26
27
27
27
27
27
27
28
28
28
28
28
27
27
27
28
28
31
32
30
31
30
28
27
27
28
27
28
29
29
29
31
31
31
32
32
31
30
30
31
31
Swell 1
Height (m)
Direction
Period (s)
1.3
SSW
14
1.4
SSW
14
1.2
SW
14
1.2
SW
14
1.2
SSW
13
1.1
SW
13
1.2
SSW
13
1.1
SW
13
1.1
SW
13
1
SSW
13
1
SSW
13
0.8
SSW
12
0.8
SSW
12
0.7
SW
12
0.7
SW
12
0.8
SSW
12
0.9
SW
12
0.9
SSW
16
1.3
SSW
16
1.4
SW
17
1.4
SW
17
1.4
SW
17
1.4
SW
16
1.6
SW
16
Energy kJ
663
752
556
532
472
400
458
394
394
351
330
184
184
144
144
187
227
441
875
1036
1193
1124
1044
1239
Swell 2
Height (m)
Direction
Period (s)
0.5
WNW
8
0.8
WNW
8
0.4
WNW
8
0.4
WNW
8
0.1
SE
8
0.8
WNW
8
0.7
NW
8
0.6
WNW
8
0.3
SSE
7
0.5
WNW
8
0.5
WNW
8
0.7
WNW
8
0.6
WNW
9
0.6
SW
15
0.6
SSW
15
0.6
WNW
8
0.6
SW
16
0.7
SW
13
0.6
WNW
9
0.6
WNW
9
0.7
WNW
8
0.6
WNW
8
0.7
WNW
8
0.6
WNW
8
Energy kJ
35
71
20
20
3
75
67
50
11
34
35
62
59
176
150
57
208
164
59
59
64
47
62
46
Swell 3
Height (m)
Direction
Period (s)
0.5
S
8
0.1
S
12
0.4
SSE
8
0.4
S
8
0.3
WNW
8
0.2
SSE
8
0.1
S
11
0.3
S
7
0.1
W
13
0.2
SSW
18
0.2
SSW
18
0.5
SW
14
0.4
S
8
0.6
WNW
9
0.6
WNW
9
0.6
SSW
16
0.6
WNW
9
0.6
WNW
9
0.5
S
9
0.5
S
9
0.4
SSE
8
0.4
SSE
8
0.5
S
8
0.5
S
8
Energy kJ
33
3
21
20
12
6
2
10
3
31
31
102
21
59
58
175
58
59
39
39
23
24
36
37
Wind waves
Height (m)
Direction
Period (s)
0.5
NW
8
0.5
N
4
0.7
WNW
5
0.6
WNW
5
0.8
WNW
8
0.4
N
4
0.5
N
4
0.4
NNE
3
0.7
NW
8
0.4
N
3
0.3
N
4
0.4
NW
3
0.3
NNW
3
0.6
WNW
9
0.4
NNW
3
0.4
NNW
3
0.6
NW
8
0.6
NW
8
Energy kJ
28
7
19
15
82
5
8
3
60
3
3
2
2
50
3
3
44
43
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
3
3
2
2
2
2
2
2
2
1
2
2
2
2
2
3
3
3
3
3
4
Distance (km)
0
10
10
10
10
0
0
0
0
10
10
0
0
0
0
0
0
0
0
0
0
0
0
0
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
3
3
3
3
3
2
3
3
2
2
2
2
2
2
2
2
2
3
3
4
4
4
4
4
Best forecast wave conditions in Indonesia
Rating
(10 max)
3
3
3
3
3
2
3
3
3
3
3
2
2
2
2
2
3
3
3
4
4
4
4
4
Header Global
Rating
(10 max)
7
8
7
6
5
5
5
5
5
5
5
5
5
5
4
5
5
5
4
5
4
5
5
7
  • 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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