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Surf Forecasts:

4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 12 am Saturday 17 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
29.3° 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 7AM is: 0.9m 13s primary swell from a Southwest direction and 0.9m 6s secondary swell from a West direction (forecast issued at 12:00am January 17). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.

Time (WIB) & DateWave HeightWave Period
Morning (17 Jan)3ft (0.9m)12s
Afternoon (17 Jan)3.5ft (1.0m)16s
Evening (17 Jan)3.5ft (1.0m)16s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Saturday
17
Sunday
18
Monday
19
10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM
Rating
(10 max)
1
1
1
2
2
1
1
2
1
2
2
2
2
2
3
2
1
3
1
2
2
2
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1
SW
0.8
SW
0.7
SW
0.9
SW
0.8
SW
0.9
SW
1
SW
1
SW
1
SW
1
SW
0.9
SW
0.8
SSW
1
SW
0.8
SSW
0.9
SSW
1.4
SW
1.4
SW
1.4
SW
1.4
SSW
1.3
SSW
1.3
SSW
1.3
SSW
1.4
SSW
1.3
SSW
Period(s) (?)131317131216161615151919141817181717161616161616
Wave
Graph
(?)Metric surfscale
Energy kJ (?)330242291273217371489477465435546465412407528124912351221993832822811921801
Wind
(km/h)
15
NW
15
NW
20
NNW
20
NNW
25
NNW
20
NNW
15
NW
20
WNW
15
NW
15
NW
20
NW
20
NNW
20
NW
15
WNW
15
WNW
15
W
20
WSW
15
WSW
20
W
20
WNW
25
NW
20
NW
20
NW
15
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		offoffcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
on		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
5:52AM
0.63
5:59PM
1.11
6:30AM
0.69
6:35PM
1.17
7:04AM
0.74
Low Tide
/ height (m)
12:06AM
0.22
10:48AM
0.23
12:33AM
0.16
11:34AM
0.18
1:02AM
0.11
12:16PM
0.15
Saturday
17
Sunday
18
Monday
19
Sunrise---6:26-------6:26-------6:26----
Sunset------6:38-------6:38-------6:38-
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
--223431112--12221221121
Temp. °C272726262728282827272727282929282626262627282828
Feels °C (?)292927272728302929292828283031292728272727292930
  • 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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