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Surf Forecasts:

4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 6 pm Tuesday 13 Jan 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
29.4° 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 8PM is: 0.4m 18s primary swell from a Southwest direction and 0.6m 9s secondary swell from a South direction, 0.4m 8s secondary swell from a West-southwest direction, 0.5m 4s secondary swell from a West direction (forecast issued at 06:00pm January 13). The wind direction is predicted to be cross-offshore.

Time (WIB) & DateWave HeightWave Period
Morning (13 Jan)--
Afternoon (13 Jan)1.5ft (0.4m)18s
Evening (13 Jan)1.5ft (0.4m)18s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM
Rating
(10 max)
1
1
1
2
2
2
2
1
1
2
2
2
2
2
2
2
1
2
2
2
2
2
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.4
SW
0.4
SW
0.4
SW
0.6
SW
0.7
SW
0.8
SW
0.8
SW
0.8
SW
0.9
SW
0.9
SW
0.9
SW
0.9
SW
1
SW
1
SW
1
SW
1
SW
1
SW
1
SW
1
SW
1
SW
1
SW
1
SW
1.1
SW
1
SW
Period(s) (?)181818171616161515151515151414141414141414141313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)84113112188260314302273370375385385410377366377387398398387382377458340
Wind
(km/h)
15
WNW
15
WNW
15
WNW
15
WNW
15
NW
10
NW
10
NW
5
W
10
W
10
NW
10
WNW
10
WNW
10
WNW
10
NNW
10
N
5
N
5
W
10
WNW
10
WNW
10
NW
10
NW
10
NNW
10
WNW
15
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offoffcrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
2:38PM
0.91
2:56AM
0.55
3:39PM
0.94
4:11AM
0.55
4:33PM
0.99
5:07AM
0.59
Low Tide
/ height (m)
9:38PM
0.43
7:38AM
0.31
11:01PM
0.36
8:48AM
0.31
11:37PM
0.29
9:53AM
0.27
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Sunrise-----6:24-------6:24-------6:24--
Sunset6:37-------6:37-------6:37-------
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
part cloud
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
11111-------11121----121
Temp. °C282827272727282828282726262627272828272726262728
Feels °C (?)303029292930313130312929292930303131303028292930
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

View detailed surf forecast for 4 Bobs at:
surf-forecast.com

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