4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 12 pm Wednesday 29 Apr 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
30.4° C
(Which is slightly warmer than usual)

How big are the waves at 4 Bobs today?

The current surf forecast for 4 Bobs at 7PM is: 1.5m 16s primary swell from a South direction and 0.8m 16s secondary swell from a Southwest direction (forecast issued at 12:00pm April 29). The wind direction is predicted to be cross-onshore.

Time (WIB) & DateWave HeightWave Period
Morning (29 Apr)3.5ft (1.1m)17s
Afternoon (29 Apr)4ft (1.2m)16s
Evening (29 Apr)4.5ft (1.3m)16s

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 21mm), heaviest during Wed night. Warm (max 29°C on Wed morning, min 27°C on Wed night). Wind will be generally light.

Wed
29
Thursday
30
Friday
1
Sat
2
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)
3
3
3
3
3
4
3
3
3
3
3
2
1
2
2
3
3
3
3
3
3
3
2
1
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1.1
SSW
17
1.1
SSW
16
1.2
SSW
16
1.5
S
16
1.2
SSW
15
1.6
SSW
15
1.4
SSW
15
1.4
SSW
15
1.5
SSW
14
1.6
SSW
14
1.3
SSW
14
1.3
SSW
14
1.5
SSW
16
1.6
SSW
15
1.5
SSW
15
1.5
SSW
14
1.5
SSW
14
1.5
SSW
14
1.5
SSW
14
1.4
SSW
14
1.4
SSW
14
1.3
SSW
14
1.3
SSW
14
1.3
SSW
14
Wave Graph
Metric surfscale
Energy kJ
745
686
797
1175
711
1092
892
857
850
966
722
722
1051
1118
949
956
904
854
841
733
733
643
653
561
Wind (km/h)
5
SE
5
SE
5
WSW
5
WSW
0
SE
10
ENE
5
NNW
5
WNW
5
E
5
ENE
0
NNE
10
W
10
WSW
5
WSW
10
W
5
W
0
SW
0
SE
5
SW
5
WSW
5
N
5
NE
10
E
10
E
glassy
glassy
glassy
cross-on
glassy
cross-off
off
cross-off
glassy
glassy
glassy
cross
cross-on
cross-on
cross
glassy
glassy
glassy
glassy
glassy
glassy
cross-off
cross
cross
High Tide
5:11PM0.92m
5:34AM1.14m
5:49PM0.90m
6:07AM1.19m
6:25PM0.87m
6:38AM1.21m
Low Tide
10:59PM0.17m
11:51AM0.17m
11:26PM0.14m
12:24PM0.12m
11:53PM0.11m
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
clear
clear
clear
thunderstorm
clear
cloud
thunderstorm
thunderstorm
thunderstorm
cloud
part cloud
part cloud
part cloud
thunderstorm
cloud
part cloud
<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>
6:21
6:21
6:21
6:21
2
1
1
1
5
3
1
3
1
2
1
Temp °C
29
29
29
29
29
28
27
27
28
28
29
28
28
28
28
28
28
29
29
29
28
28
27
27
34
33
33
33
34
32
31
31
33
32
34
31
31
32
32
33
32
34
33
33
32
32
29
30
Swell 1
Height (m)
Direction
Period (s)
1.1
SSW
17
1.1
SSW
16
1.2
SSW
16
1.5
S
16
1.2
SSW
15
1.6
SSW
15
1.4
SSW
15
1.4
SSW
15
1.5
SSW
14
1.6
SSW
14
1.3
SSW
14
1.3
SSW
14
1.5
SSW
16
1.6
SSW
15
1.5
SSW
15
1.5
SSW
14
1.5
SSW
14
1.5
SSW
14
1.5
SSW
14
1.4
SSW
14
1.4
SSW
14
1.3
SSW
14
1.3
SSW
14
1.3
SSW
14
Energy kJ
745
686
797
1175
711
1092
892
857
850
966
722
722
1051
1118
949
956
904
854
841
733
733
643
653
561
Swell 2
Height (m)
Direction
Period (s)
1
S
12
0.9
S
12
0.9
S
12
0.8
SW
16
0.8
SW
16
0.7
SW
16
0.6
SW
16
0.6
SW
16
0.6
SW
15
0.6
SW
14
0.8
SSW
16
0.8
SSW
16
0.7
SW
15
0.4
SW
15
0.3
SW
15
0.1
W
16
0.1
W
15
0.1
W
15
0.1
W
15
0.1
W
14
0.1
W
14
0.5
S
8
0.5
S
8
0.5
S
8
Energy kJ
285
224
220
361
361
251
206
203
171
169
363
354
209
75
33
5
5
4
4
4
4
30
32
33
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
18
0.4
SW
13
0.5
SW
14
0.1
W
14
0.8
S
11
0.1
W
18
0.1
W
18
0.1
W
18
0.5
S
18
0.4
S
8
0.5
S
8
0.5
S
8
0.1
W
16
0.1
W
16
0.1
W
16
0.1
W
14
0.2
S
8
0.1
W
14
0.1
W
14
0.2
S
18
Energy kJ
109
63
91
4
163
6
6
6
155
21
33
32
5
5
5
4
5
4
4
25
Wind waves
Height (m)
Direction
Period (s)
Energy kJ
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
4
3
4
3
3
3
3
3
3
3
4
3
3
3
3
3
3
3
3
3
3
Distance (km)
0
0
0
19
0
0
0
0
0
0
0
82
82
19
10
0
0
0
0
0
0
0
2
2
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
4
3
4
4
4
4
4
4
4
4
4
3
3
4
3
3
3
3
3
3
3
3
3
3
Best forecast wave conditions in Indonesia
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3
3
3
3
3
Header Global
Rating
(10 max)
9
9
8
8
8
7
6
5
5
5
5
5
5
6
6
6
6
7
5
5
5
5
5
4
  • 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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