4 Bobs surfForecast / Mentawi Islands / Indonesia

information circle48hr Weather and Surf, issued 12 pm Saturday 13 Dec 2025 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 slightly warmer than usual)


How big are the waves at 4 Bobs today?

The current surf forecast for 4 Bobs at 4PM is: 1.2m 7s primary swell from a West direction and 0.6m 13s secondary swell from a South-southwest direction (forecast issued at 12:00pm December 13). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (WIB) & DateWave HeightWave Period
Morning (13 Dec)2ft (0.6m)13s
Afternoon (13 Dec)4ft (1.2m)7s
Evening (13 Dec)2.5ft (0.7m)13s

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

Updates in  hr  min  s Forecast update imminent
Saturday
13
Sunday
14
Monday
15
Tuesday
16
10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM
Rating
(10 max)
2
1
2
2
2
1
2
1
1
1
1
1
1
1
1
1
2
2
1
1
1
2
2
2
Swell
Height Map
Wave Height (m) & direction (?)
0.6
SSW
0.6
SSW
1.2
W
0.8
SSW
0.7
SSW
0.7
SSW
0.8
SSW
0.7
SSW
0.8
SSW
0.8
SSW
0.7
SW
1.2
W
1.5
W
1.5
W
1.4
W
1.3
W
1.2
W
1.1
W
0.8
SSW
0.8
SSW
0.9
SW
0.9
SW
0.9
SW
0.6
SW
Period(s) (?)1313713131212121212129998888141313131318
Wave
Graph
(?)Metric surfscale
Energy kJ (?)139137150192147138169131169177142230363347264223182149253229253253260255
Wind
(km/h)
15
NNW
15
NW
15
NNW
15
N
15
N
10
N
10
NW
10
NNW
10
NNW
15
NW
20
WNW
20
WNW
20
NW
20
NW
20
NNW
15
NW
10
NW
10
WNW
25
WNW
20
NW
15
NW
15
NW
15
WNW
10
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
offoffoffcross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
off
High Tide
/ height (m)
1:41PM
0.87
1:32AM
0.74
2:39PM
0.93
2:41AM
0.69
3:29PM
0.98
3:42AM
0.67
Low Tide
/ height (m)
7:17PM
0.47
7:12AM
0.29
9:03PM
0.44
8:03AM
0.30
10:15PM
0.37
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Sunrise-------6:09-------6:09-------6:09
Sunset--6:22-------6:23-------6:23-----
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
rain showers
light rain
rain showers
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
mod rain
thunderstorm
mod rain
mod rain
light rain
light rain
thunderstorm
Rain (mm)
125431-1112-144436713106221
Temp. °C252525262626252626262727262625252424242424242524
Feels °C (?)282727282929282928282828272726272727242526262727
  • 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

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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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