Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 12 am 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
29.3° 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 8AM is: 0.6m 9s primary swell from a South direction and 0.5m 9s secondary swell from a West direction (forecast issued at 12:00am January 13). An open ocean swell of 0.3m 2s is not directed at the surf break. 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
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
1
1
1
1
0
1
2
2
2
2
2
1
1
1
2
2
2
2
2
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
S
0.6
S
0.6
S
0.6
S
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
1.1
SW
1
SW
1
SW
1
SW
Period(s) (?)999999181818171616161515151515151414141414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)61616163636384113112188260314302273370375385380410377422377387398
Wind
(km/h)
10
NNW
10
NW
10
NW
10
NW
10
NNW
5
N
10
WNW
20
W
15
WNW
10
WNW
10
NW
10
NNW
5
NNW
0
N
5
WSW
10
W
15
W
10
WNW
10
WNW
10
NW
10
NNW
5
NNW
5
WNW
10
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offcross-
off		crosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		glasscrosscrosscrosscross-
off		cross-
off		cross-
off		offglasscross-
off		cross-
off
High Tide
/ height (m)
1:25AM
0.59
2:38PM
0.91
2:56AM
0.55
3:39PM
0.94
4:11AM
0.55
4:33PM
0.99
Low Tide
/ height (m)
7:26PM
0.46
6:37AM
0.29
9:38PM
0.43
7:38AM
0.31
11:01PM
0.36
8:48AM
0.31
Tuesday
13
Wednesday
14
Thursday
15
Sunrise---6:24-------6:24-------6:24----
Sunset------6:37-------6:37-------6:37-
clear
clear
clear
clear
clear
clear
thunderstorm
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
thunderstorm
clear
clear
thunderstorm
thunderstorm
Rain (mm)
------1------------1--11
Temp. °C272626262728282827272626272728282727262627272727
Feels °C (?)302928283032312929302829313132312929292930313029
  • 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

Latest Updates

The World’s Most Inconsistent Waves
Ben Mondy

The World’s Most Inconsistent Waves

Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

Read more

Read more

Discover more articles and updates in the Greenroom.

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

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest