4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 6 am 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 12PM is: 1.2m 14s primary swell from a Southwest direction and 0.5m 8s secondary swell from a West-northwest direction (forecast issued at 06:00am May 23). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.

Time (WIB) & DateWave HeightWave Period
Morning (23 May)4ft (1.2m)14s
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

Heavy rain (total 27mm), heaviest during Sat night. Warm (max 29°C on Sat morning, min 27°C on Sun night). Wind will be generally light.

Saturday
23
Sunday
24
Monday
25
Tue
26
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
1 AM
Rating
(10 max)
3
3
2
3
3
3
1
1
2
2
2
2
1
1
2
2
1
1
1
2
2
2
3
3
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)
1.4
SW
15
1.3
SW
14
1.2
SW
14
1.3
SW
14
1.3
SSW
14
1.4
SSW
14
1.2
SW
14
1.2
SW
14
1.2
SSW
13
1.1
SW
13
1.1
SW
13
1.1
SW
13
1.1
SW
13
1
SW
13
1
SW
13
0.8
SSW
12
0.8
SSW
12
0.6
SW
15
0.6
SSW
15
0.8
SSW
12
0.9
SW
13
0.9
SW
16
1.2
SW
16
1.2
SW
17
Wave Graph
Metric surfscale
Energy kJ
795
604
548
621
663
752
556
532
472
400
394
394
394
331
311
184
184
176
150
187
230
367
767
834
Wind (km/h)
15
NNW
15
NW
10
NNW
10
N
10
NW
15
NW
15
NW
20
NNW
15
NNW
20
N
20
N
15
NNW
20
NNW
20
NNW
20
NNW
15
NNW
20
NNW
20
NNW
15
NW
15
NW
15
NNW
15
NNW
15
NNW
15
NW
off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
High Tide
11:27AM1.02m
00:38AM0.77m
12:37PM0.92m
1:50AM0.84m
1:48PM0.85m
Low Tide
4:26AM0.30m
5:56PM0.23m
5:43AM0.39m
6:57PM0.26m
7:20AM0.43m
7:55PM0.27m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
cloud
part cloud
cloud
cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
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
1
1
1
1
2
1
3
2
2
1
2
1
3
1
1
Temp °C
28
27
28
29
29
29
28
28
28
28
28
29
29
28
27
27
27
27
27
29
28
28
28
27
31
29
31
32
32
32
31
29
30
29
28
30
30
29
28
28
29
28
28
31
30
30
30
29
Swell 1
Height (m)
Direction
Period (s)
1.4
SW
15
1.3
SW
14
1.2
SW
14
1.3
SW
14
1.3
SSW
14
1.4
SSW
14
1.2
SW
14
1.2
SW
14
1.2
SSW
13
1.1
SW
13
1.1
SW
13
1.1
SW
13
1.1
SW
13
1
SW
13
1
SW
13
0.8
SSW
12
0.8
SSW
12
0.7
SW
12
0.7
WNW
9
0.8
SSW
12
0.9
SW
13
0.9
W
8
1.2
SW
16
1.2
SW
17
Energy kJ
795
604
548
621
663
752
556
532
472
400
394
394
394
331
311
184
184
144
77
187
230
89
767
834
Swell 2
Height (m)
Direction
Period (s)
0.5
WNW
7
0.6
WNW
7
0.5
WNW
7
0.5
WNW
8
0.5
WNW
8
0.8
WNW
8
0.8
WNW
8
0.7
WNW
8
0.1
SE
8
0.7
WNW
8
0.7
WNW
8
0.7
NW
8
0.6
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
SW
14
0.4
S
8
0.6
SW
15
0.7
SW
12
0.8
WNW
8
0.6
WSW
7
0.9
SW
16
0.9
W
8
0.8
W
8
Energy kJ
30
36
31
35
35
71
69
54
3
58
58
65
48
34
35
102
21
176
144
94
35
367
89
86
Swell 3
Height (m)
Direction
Period (s)
0.4
SSW
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.1
S
12
0.3
S
8
0.3
S
8
0.1
SE
8
0.2
SSE
8
0.2
SSE
11
0.3
S
7
0.3
S
9
0.4
S
9
0.3
S
8
0.4
S
8
0.4
SW
18
0.4
S
9
0.6
SSW
15
0.6
SSW
16
0.6
SSW
16
0.7
SW
13
0.5
S
9
0.5
SW
11
Energy kJ
22
35
34
34
33
3
12
12
2
6
12
10
13
24
12
21
79
24
150
175
173
164
39
58
Wind waves
Height (m)
Direction
Period (s)
0.4
NNW
3
0.5
NW
8
0.5
N
4
0.7
NW
4
0.6
NW
4
0.7
WNW
8
0.4
NNW
4
0.4
N
4
0.7
N
4
0.5
N
4
0.5
N
4
0.4
N
4
0.7
NW
8
0.8
WNW
9
0.8
WNW
9
0.4
NNW
4
0.4
NNW
4
0.4
NNW
3
0.4
NNW
4
0.3
N
4
Energy kJ
3
28
7
17
15
56
4
4
16
9
9
5
74
96
86
4
4
4
4
2
Nearest Offshore or Glassy
Rating
(10 max)
3
3
2
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
Distance (km)
0
0
0
0
0
0
10
10
0
0
0
0
10
10
0
0
10
10
10
0
0
0
0
0
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
3
3
3
3
3
3
3
3
3
3
2
3
2
2
2
2
2
2
2
2
2
3
3
4
Best forecast wave conditions in Indonesia
Rating
(10 max)
3
4
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
2
3
3
2
3
3
4
Header Global
Rating
(10 max)
8
5
5
6
7
8
7
6
5
5
5
5
5
5
5
5
5
5
5
5
5
5
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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