4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 6 pm Saturday 21 Mar 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
29.9° C
(Which is normal for this time of year)

How big are the waves at 4 Bobs today?

The current surf forecast for 4 Bobs at 1AM is: 1.1m 15s primary swell from a Southwest direction and 0.5m 17s secondary swell from a South direction (forecast issued at 06:00pm March 21). The wind direction is predicted to be onshore.

Time (WIB) & DateWave HeightWave Period
Morning (22 Mar)2.5ft (0.8m)16s
Afternoon (22 Mar)3ft (0.9m)14s
Evening (22 Mar)3.5ft (1.1m)14s

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


Updates in  hr  min  s Forecast update imminent
Saturday
21
Sunday
22
Monday
23
Tuesday
24
4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM
Rating
(10 max)
2
1
0
1
1
0
0
1
0
0
1
1
1
2
2
3
3
2
2
1
1
2
2
3
Swell
Height Map
Wave Height (m) & direction (?)
0.7
SW
0.6
SW
0.9
SW
1.1
SW
1.1
SW
1
SSW
0.8
SSW
0.9
SSW
0.9
SSW
0.9
SW
1.2
SSW
0.9
SSW
0.9
SW
1.1
SSW
1.4
SSW
0.9
SSW
1.3
SSW
1.4
SSW
1.4
SSW
1.4
SSW
1.4
SSW
1.4
SSW
1.3
SSW
1.3
SSW
Period(s) (?)151515151614161514141414141316161515151414141414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2171713095445583963243753233015773622933961003452716869904845746756668668
Wind
(km/h)
5
SSW
10
SSW
10
S
10
S
10
S
15
SSE
15
SE
10
SSE
10
S
10
S
10
S
10
SSE
10
SSE
10
SE
5
SE
5
SE
5
SW
5
WSW
10
SW
10
SW
10
SW
10
SW
5
S
5
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
on
onononcross-
on
cross-
on
onononononcross-
on
cross-
on
cross-
on
glassglasscrosscross-
on
cross-
on
cross-
on
cross-
on
onglass
High Tide
/ height (m)
7:57PM
1.04
8:19AM
1.29
8:32PM
0.95
8:58AM
1.27
9:09PM
0.84
9:41AM
1.20
Low Tide
/ height (m)
1:54PM
-0.01
1:50AM
-0.04
2:36PM
0.01
2:24AM
-0.02
3:20PM
0.07
2:59AM
0.03
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Sunrise-----6:26-------6:26-------6:26--
Sunset6:32-------6:32-------6:31-------
clear
clear
clear
part cloud
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
----21--------------1221
Temp. °C282828272727282828282828272728282828282727272728
Feels °C (?)323131303029313131313131303032323231313030303032
  • 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

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our 4 Bobs surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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