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Surf Forecasts:

4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 12 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 6PM 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 12:00pm January 13). The wind direction is predicted to be cross-offshore.

Time (WIB) & DateWave HeightWave Period
Morning (13 Jan)2ft (0.6m)9s
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
10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM
Rating
(10 max)
1
1
1
0
1
2
2
2
2
2
1
1
2
2
2
2
2
1
1
2
2
2
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
S
0.6
S
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
Period(s) (?)9918181817161616151515151515141414141414141414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)636384113112188260314302273370375385385410377366377387398398387382377
Wind
(km/h)
10
NNW
5
NNW
10
WNW
15
WNW
15
WNW
15
WNW
15
WNW
10
NW
10
WNW
5
W
5
WSW
10
W
10
NW
10
WNW
10
WNW
5
NW
5
NW
5
W
5
WSW
10
WNW
10
NW
10
NW
10
WNW
10
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		offcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		glasscross-
on		crosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscross-
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
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Sunrise-------6:24-------6:24-------6:24
Sunset--6:37-------6:37-------6:37-----
clear
clear
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
clear
clear
thunderstorm
clear
clear
thunderstorm
thunderstorm
Rain (mm)
--11----------111--1--11
Temp. °C272828282727272727282828272726262727282727262626
Feels °C (?)293130302929293030323130303029303130312930282928
  • 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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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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