4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 12 pm Monday 25 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 9PM is: 1.2m 16s primary swell from a South-southwest direction and 0.6m 9s secondary swell from a West-northwest direction (forecast issued at 12:00pm May 25). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (WIB) & DateWave HeightWave Period
Morning (25 May)2ft (0.6m)15s
Afternoon (25 May)2.5ft (0.8m)12s
Evening (25 May)4ft (1.2m)16s

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 17mm), heaviest on Tue night. Warm (max 28°C on Mon morning, min 27°C on Mon morning). Wind will be generally light.

Mon
25
Tuesday
26
Wednesday
27
Thu
28
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)
1
2
2
2
3
3
3
3
3
3
3
4
4
3
3
3
3
4
4
4
4
4
4
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)
0.6
SSW
15
0.8
SSW
12
0.9
SW
12
0.9
SSW
16
1.3
SSW
16
1.3
SSW
17
1.4
SW
17
1.4
SW
17
1.4
SW
16
1.6
SW
16
1.6
SW
16
1.7
SSW
16
1.7
SSW
15
1.6
SW
15
1.6
SW
15
1.6
SW
14
1.5
SW
14
1.5
SW
14
1.5
SW
14
1.9
SW
17
2.1
SW
17
2.1
SW
17
2.2
SW
16
2.2
SW
16
Wave Graph
Metric surfscale
Energy kJ
150
206
227
441
875
952
1193
1124
1044
1239
1224
1339
1288
1074
1045
1031
915
902
890
2238
2483
2396
2408
2444
Wind (km/h)
10
W
10
WNW
15
NW
10
NNW
10
NNW
10
N
15
NNW
15
NNW
10
NW
5
NE
0
NW
0
SW
0
SSW
5
W
5
NNW
5
N
5
N
10
ENE
0
NE
5
WSW
5
SSW
5
SSW
5
S
5
ENE
cross
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
glassy
glassy
glassy
glassy
glassy
glassy
off
off
cross-off
glassy
glassy
glassy
glassy
glassy
glassy
High Tide
1:48PM0.85m
2:51AM0.92m
2:53PM0.80m
3:41AM1.00m
3:50PM0.78m
4:24AM1.07m
Low Tide
7:55PM0.27m
8:59AM0.41m
8:44PM0.26m
10:10AM0.35m
9:26PM0.25m
cloud
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
cloud
clear
thunderstorm
part cloud
cloud
cloud
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
clear
clear
part cloud
part cloud
thunderstorm
thunderstorm
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>
6:20
6:20
6:20
6:20
1
1
2
1
5
4
2
1
Temp °C
28
27
27
27
27
27
27
27
27
28
28
28
28
27
27
27
28
28
28
28
28
27
27
27
31
30
30
30
30
30
30
30
31
32
33
33
33
31
31
31
32
31
32
32
32
31
31
31
Swell 1
Height (m)
Direction
Period (s)
0.7
SW
12
0.8
SSW
12
0.9
SW
12
0.9
SSW
16
1.3
SSW
16
1.3
SSW
17
1.4
SW
17
1.4
SW
17
1.4
SW
16
1.6
SW
16
1.6
SW
16
1.7
SSW
16
1.7
SSW
15
1.6
SW
15
1.6
SW
15
1.6
SW
14
1.5
SW
14
1.5
SW
14
1.5
SW
14
1.9
SW
17
2.1
SW
17
2.1
SW
17
2.2
SW
16
2.2
SW
16
Energy kJ
144
184
227
441
875
952
1193
1124
1044
1239
1224
1339
1288
1074
1045
1031
915
902
890
2238
2483
2396
2408
2444
Swell 2
Height (m)
Direction
Period (s)
0.6
SSW
15
0.6
WNW
8
0.6
WNW
9
0.7
SW
13
0.6
WNW
9
0.6
WNW
9
0.6
WNW
8
0.6
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
WNW
8
0.5
W
8
0.5
SW
20
0.7
SW
19
0.9
SW
19
1.1
SW
18
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
Energy kJ
150
57
58
164
59
59
57
55
40
40
39
38
38
38
34
194
384
513
752
22
22
22
22
22
Swell 3
Height (m)
Direction
Period (s)
0.6
WNW
9
0.6
SW
16
0.6
SSW
16
0.6
WNW
9
0.5
S
9
0.5
S
9
0.4
SSE
8
0.5
S
8
0.5
S
8
0.4
SSE
8
0.4
SSE
8
0.4
SSE
8
0.5
S
8
0.5
SSE
8
0.4
SSE
8
0.5
W
8
0.4
WNW
8
0.4
WNW
8
0.4
WNW
8
0.4
SSE
8
0.4
SSE
8
0.3
SSE
8
0.3
SSE
8
0.3
SSE
8
Energy kJ
58
206
173
59
39
39
23
37
36
24
24
24
37
40
28
34
22
22
22
25
21
12
12
12
Wind waves
Height (m)
Direction
Period (s)
0.4
NW
4
Energy kJ
5
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
3
3
3
3
3
3
3
4
4
3
3
3
3
4
4
4
4
4
4
4
Distance (km)
10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Best forecast wave conditions in Mentawi Islands
Rating
(10 max)
2
2
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Best forecast wave conditions in Indonesia
Rating
(10 max)
3
2
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
4
4
5
5
4
4
4
4
5
5
9
9
9
9
6
7
9
6
8
9
9
9
6
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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